diff --git a/.gitignore b/.gitignore
index 4de822f..4b9f1da 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,8 @@
 .vscode/launch.json
 .vscode/ipch
 .DS_Store
+upload_params.ini
+
+# projectplan and design
+*.kanban
+*.excalidraw
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..901dd8b
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,23 @@
+{
+  "files.associations": {
+    "*.json": "json",
+    "array": "cpp",
+    "deque": "cpp",
+    "string": "cpp",
+    "unordered_map": "cpp",
+    "unordered_set": "cpp",
+    "vector": "cpp",
+    "string_view": "cpp",
+    "initializer_list": "cpp",
+    "span": "cpp",
+    "*.tcc": "cpp",
+    "system_error": "cpp",
+    "regex": "cpp",
+    "compare": "cpp",
+    "functional": "cpp",
+    "tuple": "cpp",
+    "type_traits": "cpp",
+    "utility": "cpp",
+    "limits": "cpp"
+  }
+}
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 18c1792..61654f7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,5 @@
 CHANGELOG
 
-## v0.0.0
+## v1.0.0
 
-PLEASE WRITE YOUR CHANGES BEFORE YOU CREATE A RELEASE IN THE CHANGELOG.MD FILE!
+Add RGB NeoPixel example.
\ No newline at end of file
diff --git a/README.md b/README.md
index b77605e..5d48e70 100644
--- a/README.md
+++ b/README.md
@@ -1,91 +1,19 @@
-# ESP32 project template
+# ESP32-C6 examples
 
 ## Description
 
-This is a project template to create microcontroller apps with automatized firmware builds for [esp32](https://www.espressif.com/en/products/socs/esp32), [esp32s2](https://www.espressif.com/en/products/socs/esp32-s2) and [esp32s3](https://www.espressif.com/en/products/socs/esp32-s3) microcontroller boards. It uses for that [GitHub Actions](https://github.com/features/actions) and [platformio](https://platformio.org/). Use this repository as a template for your own esp32 projects.
+Uncomment `src_dir=` in the `platform.ini` file.
 
-## Requirements
-
-- [GitHub Actions](https://github.com/features/actions)
-- [platformio](https://platformio.org/)
-- [python](https://www.python.org/)
-
-## GitHub Actions - Workflow
-
-The release build happens in the `build & release` workflow: [build_release.yml](.github/workflows/build_release.yml).
-It creates a release, after creation of a new git tag (named it like `v1.0.0`).
-
-If you want to test the build on all merge w/o creating a tag then the `build` workflow is what you looking for: [build.yml](.github/workflows/build.yml)
-
-## PlatformIO
-
-[PlatformIO](https://platformio.org/) is a tool to create microcontroller apps for arduino platforms and compatibles (esp32). You can install the [Visual Studio Code extension](https://platformio.org/install/ide?install=vscode) in the [Visual Studio Code](https://code.visualstudio.com/) IDE.
-
-## Python
-
-There is a tiny python script needed to customize the firmware filenames within platformio, see documentation: https://docs.platformio.org/en/stable/scripting/examples/custom_program_name.html
-
-The [extra_script.py](extra_script.py) script gets the platformio env (e.g. lolin32) and the git-tag for the firmware filename.
-This is required to publish several firmware names in the github artifacts of a release.
-
-## Get Started
-
-<img src="doc/create-new-project-with-template.png" />
-
-1. Login to github
-
-2. Click on `Use this template` to create a new git repository
-3. Implement your application in the [src/main.cpp](src/main.cpp)
-4. Comment your new change in the [CHANGELOG.md](CHANGELOG.md) file
-5. Push your changes
-
-```sh
-git add .
-```
-
-```sh
-git commit -am "my app"
-```
-
-```sh
-git push -u origin main
-```
-
-5. Create a new tag to trigger a release, e.g. for v1.0.0
-
-```sh
-git tag v1.0.0
-```
-
-```sh
-git push origin v1.0.0
-```
-
-6. You can find your firmwares under `Releases` after the CI build finished
-
-## CHANGELOG
-
-You can write your changes in the [CHANGELOG.md](CHANGELOG.md) before you create a release. It will be shown under the release page.
-
-## Example Release
-
-see [Releases](https://github.com/mcuw/esp-ghbuild-template/releases) on the right sidemenu.
-
-## Customize your project
-
-You can reduce and adapt your required boards in the [platformio.ini](platformio.ini).
+## Supported boards
 
-Update the [CHANGELOG.md](CHANGELOG.md) file before you are creating a new release. By creating a new git tag you trigger a new release which generate for you the firmwares.
+- [NanoESP32-C6](https://s.click.aliexpress.com/e/_ooBtUih) (affiliate link) with up to 16MB flash [datasheet](doc/nanoESP32C6.pdf)
 
-## Supported boards
+- [Super Mini ESP32-C6](https://s.click.aliexpress.com/e/_DeLjVMb) (affiliate link) with 4MB flash and W2812 RGB LED
 
-- ESP32 (buy with affiliate link: [LILYGO T-Beam](https://s.click.aliexpress.com/e/_DBzslDV) with LoRA, lolin32, lolin D32 pro)
-- ESP32 S2
-- ESP32 S3 (buy with affiliate link: [LILYGO T-Display S3](https://s.click.aliexpress.com/e/_DBmOMkn), [LILYGO T-Display-S3 AMOLED](https://s.click.aliexpress.com/e/_DmboYpZ), [LILYGO T-Display-S3 Touch](https://s.click.aliexpress.com/e/_DCBgPlV), [LILYGO T-Display S3 Long](https://s.click.aliexpress.com/e/_Dl6UVMx))
-- ESP32 C6 with WiFi 6 and BT-5 LE (buy with affiliate link: [UICPAL nanoESP32-C6](https://s.click.aliexpress.com/e/_DdZ83IB) with up to 16MB flash, [ESP32-C6](https://s.click.aliexpress.com/e/_DeLjVMb) with 4MB flash and W2812 RGB LED)
+- [LilyGo T-QT-C6](https://github.com/mcuw/esp32-t-qt-c6-sdk): use Arduino SDK https://github.com/mcuw/esp32-t-qt-c6-sdk
 
 ## Disclaimer
 
-Contribution and help ... if you find an issue or wants to contribute then please do not hesitate to create a merge request or an issue.
+Contribution and help ... if you find an issue or wants to contribute then please do not hesitate to create a pull request or an issue.
 
 We provide our build template as is, and we make no promises or guarantees about this code.
diff --git a/boards/esp32-c6-n16.json b/boards/esp32-c6-n16.json
index 287f5e4..2bf4036 100644
--- a/boards/esp32-c6-n16.json
+++ b/boards/esp32-c6-n16.json
@@ -7,10 +7,11 @@
     "mcu": "esp32c6",
     "variant": "esp32c6",
     "extra_flags": [
-      "-DARDUINO_ESP32S3_DEV",
+      "-DARDUINO_ESP32C6_DEV",
       "-DARDUINO_USB_MODE=1",
       "-DARDUINO_USB_CDC_ON_BOOT=1"
-    ]
+    ],
+    "partitions": "default_16MB.csv"
   },
   "connectivity": [
     "wifi",
diff --git a/doc/nanoESP32C6.pdf b/doc/nanoESP32C6.pdf
new file mode 100644
index 0000000..6b3ca9d
Binary files /dev/null and b/doc/nanoESP32C6.pdf differ
diff --git a/examples/mac/main.cpp b/examples/mac/main.cpp
new file mode 100644
index 0000000..bb3926c
--- /dev/null
+++ b/examples/mac/main.cpp
@@ -0,0 +1,14 @@
+#include <Arduino.h>
+#include <WiFi.h>
+
+void setup()
+{
+  Serial.begin(115200);
+}
+
+void loop()
+{
+  WiFi.mode(WIFI_STA);
+  Serial.println(WiFi.macAddress());
+  delay(1000);
+}
\ No newline at end of file
diff --git a/examples/ota-manager-rtos/credentials.h b/examples/ota-manager-rtos/credentials.h
new file mode 100644
index 0000000..d5b84e8
--- /dev/null
+++ b/examples/ota-manager-rtos/credentials.h
@@ -0,0 +1,3 @@
+#ifndef AP_PSK
+#define AP_PSK "12345678"
+#endif
diff --git a/examples/ota-manager-rtos/main.cpp b/examples/ota-manager-rtos/main.cpp
new file mode 100644
index 0000000..51ec389
--- /dev/null
+++ b/examples/ota-manager-rtos/main.cpp
@@ -0,0 +1,257 @@
+#include <Arduino.h>
+#include <WebServer.h>
+#include <Preferences.h>
+#include <OTA.h>
+#include <ESPTelnetStream.h>
+#include <DebugUtils.h>
+
+#include "credentials.h"
+#include <esp_now.h>
+
+#define PREF_KEY "config"
+#define PREF_SSID_KEY "ssid"
+#define PREF_PASSPHRASE_KEY "passphrase"
+
+String ap_default_psk(AP_PSK); // Set your default PSK in credentials.h if you want
+ESPTelnetStream telnet;
+
+WebServer server(80);
+Preferences prefs;
+
+TaskHandle_t OTATask, TelnetTask, UiTask, SleepTask;
+OTA ota;
+
+// sleep modes, see
+// https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/sleep_modes.html
+
+void initDevBoard(uint8_t redValue = 0, uint8_t greenValue = 0, uint8_t blueValue = 0)
+{
+  // init RGB-LED
+  neopixelWrite(PIN_NEOPIXEL, redValue, greenValue, blueValue);
+
+  // you can initialize the dev board here ...
+}
+
+void handleRoot()
+{
+  if (server.hasArg(PREF_SSID_KEY) && server.arg(PREF_SSID_KEY).length() && server.hasArg(PREF_PASSPHRASE_KEY) && server.arg(PREF_PASSPHRASE_KEY).length())
+  {
+    const String ssid(server.arg(PREF_SSID_KEY));
+    prefs.begin(PREF_KEY, false);
+    prefs.putString(PREF_SSID_KEY, ssid);
+    prefs.putString(PREF_PASSPHRASE_KEY, server.arg(PREF_PASSPHRASE_KEY));
+    prefs.end();
+
+    serialPrint("Credentials saved for: ");
+    serialPrintln(ssid);
+    telnet.print("Credentials saved for: ");
+    telnet.println(ssid);
+
+    char success[150];
+    snprintf(
+        success, 148,
+        "<!DOCTYPE html>\
+<head>\
+  <title>ESP32-C6 OTA with webserver</title>\
+  <meta http-equiv=\"Refresh\" content=\"0; URL=/saved\" />\
+</head>\
+<body>\
+</body>\
+</html>");
+    server.send(200, F("text/html"), success);
+
+    return;
+  }
+
+  prefs.begin(PREF_KEY, true);
+  const String ssid(prefs.isKey(PREF_SSID_KEY) ? prefs.getString(PREF_SSID_KEY) : "");
+  prefs.end();
+
+  char temp[740];
+  snprintf(
+      temp, 740,
+      "<!DOCTYPE html>\
+  <head>\
+    <title>ESP32-C6 OTA with webserver</title>\
+    <style>\
+      body { background-color: #cccccc;font-family: Arial, Helvetica, Sans-Serif;Color: #000088; }\
+    </style>\
+  </head>\
+  <body>\
+    <h1>OTA and webserver example</h1>\
+    <form method=\"post\">\
+      <div>\
+        <label for=\"ssid\">SSID</label><br>\
+        <input type=\"text\" id=\"ssid\" name=\"ssid\" value=\"%s\" required>\
+      </div>\
+      <div>\
+        <label for=\"passphrase\">Passphrase</label><br>\
+        <input type=\"password\" id=\"passphrase\" name=\"passphrase\" minlength=\"8\" required>\
+      </div>\
+      <div>\
+        <input type=\"submit\" value=\"Save\">\
+        <input type=\"reset\" value=\"Clear\">\
+      </div>\
+      </form>\
+  </body>\
+</html>",
+      ssid);
+  server.send(200, F("text/html"), temp);
+}
+
+void handleSaved()
+{
+  char success[330];
+
+  snprintf(
+      success, 324,
+      "<html>\
+<head>\
+  <title>ESP32-C6 OTA with webserver</title>\
+  <style>\
+    body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; }\
+  </style>\
+</head>\
+<body>\
+  <h1>OTA and webserver example</h1>\
+  <div>Credentials saved. ESP is restarting and will be available under a new IP.</div>\
+</body>\
+</html>");
+  server.send(200, F("text/html"), success);
+
+  delay(2000);
+  ESP.restart();
+}
+
+void handleNotFound()
+{
+  String message("File Not Found\n\n");
+  message += "URI: ";
+  message += server.uri();
+  message += "\nMethod: ";
+  message += (server.method() == HTTP_GET) ? "GET" : "POST";
+  message += "\nArguments: ";
+  message += server.args();
+  message += "\n";
+
+  for (uint8_t i = 0; i < server.args(); i++)
+  {
+    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
+  }
+
+  server.send(404, "text/plain", message);
+}
+
+void otaTask(void *parameters)
+{
+  for (;;)
+  {
+    ota.handle();
+    vTaskDelay(portTICK_PERIOD_MS);
+  }
+}
+
+void telnetTask(void *parameters)
+{
+  for (;;)
+  {
+    telnet.loop();
+    vTaskDelay(portTICK_PERIOD_MS);
+  }
+}
+
+void uiTask(void *parameters)
+{
+  for (;;)
+  {
+    server.handleClient();
+    vTaskDelay(portTICK_PERIOD_MS);
+  }
+}
+
+void sleepTask(void *parameters)
+{
+  esp_err_t err = esp_sleep_enable_timer_wakeup(10 * 1000000);
+  if (err == ESP_ERR_INVALID_ARG)
+  {
+    telnet.print("sleep timer wakeup value is too high");
+    telnet.println(err);
+  }
+
+  for (;;)
+  {
+    if (ota.isLoading())
+    {
+      vTaskDelay(1000 / portTICK_PERIOD_MS);
+      continue;
+    }
+    // TODO test this:
+    // esp_err_t err = esp_sleep_enable_wifi_wakeup();
+    // telnet.println("enable wifi wakeup...");
+    // telnet.println(err);
+
+    // esp_now_deinit();x
+    neopixelWrite(PIN_NEOPIXEL, 0, 0, 0);
+    telnet.println("sleep ...");
+    telnet.flush();
+    serialFlush();
+    err = esp_light_sleep_start(); // ESP_OK or ESP_ERR_INVALID_STATE
+    if (err == ESP_OK)
+    {
+      neopixelWrite(PIN_NEOPIXEL, 0, 255, 0);
+
+      // wake up or failed
+      // err = esp_now_init();
+      delay(100);
+      telnet.println("wake up ...");
+    }
+    else
+    {
+      neopixelWrite(PIN_NEOPIXEL, 255, 0, 0);
+      telnet.println(err);
+    }
+
+    // give other tasks time
+    vTaskDelay(10000 / portTICK_PERIOD_MS);
+  }
+}
+
+void setup()
+{
+  serialBegin(115200);
+
+  initDevBoard(0, 255, 0);
+
+  prefs.begin(PREF_KEY, true);
+  String ssid(prefs.getString(PREF_SSID_KEY).c_str());
+  String passphrase(prefs.getString(PREF_PASSPHRASE_KEY).c_str());
+  prefs.end();
+  serialPrint("SSID: ");
+  serialPrintln(ssid);
+
+  ota.begin(ap_default_psk, ssid.c_str(), passphrase.c_str());
+  telnet.begin();
+
+  server.on("/", handleRoot);
+  server.on("/saved", handleSaved);
+  server.onNotFound(handleNotFound);
+  server.begin();
+
+  xTaskCreatePinnedToCore(otaTask, "ota", 4096, NULL, 3, &OTATask, 0);
+
+  xTaskCreatePinnedToCore(telnetTask, "debug", 4096, NULL, 2, &TelnetTask, 0);
+
+  xTaskCreatePinnedToCore(uiTask, "ui", 4096, NULL, 2, &UiTask, 0);
+
+  xTaskCreatePinnedToCore(sleepTask, "sleep", 2048, NULL, 1, &SleepTask, 0);
+}
+
+void loop()
+{
+  // telnet.print("core: ");
+  // telnet.println(xPortGetCoreID());
+  // delay(1000);
+
+  // run only tasks w/o the non priorized loop task
+  vTaskDelete(NULL);
+}
diff --git a/examples/ota-manager/credentials.h b/examples/ota-manager/credentials.h
new file mode 100644
index 0000000..d5b84e8
--- /dev/null
+++ b/examples/ota-manager/credentials.h
@@ -0,0 +1,3 @@
+#ifndef AP_PSK
+#define AP_PSK "12345678"
+#endif
diff --git a/examples/ota-manager/main.cpp b/examples/ota-manager/main.cpp
new file mode 100644
index 0000000..48e0acd
--- /dev/null
+++ b/examples/ota-manager/main.cpp
@@ -0,0 +1,169 @@
+#include <Arduino.h>
+#include <WebServer.h>
+#include <Preferences.h>
+#include <OTA.h>
+#include <ESPTelnetStream.h>
+#include <DebugUtils.h>
+
+#include "credentials.h"
+
+#define PREF_KEY "config"
+#define PREF_SSID_KEY "ssid"
+#define PREF_PASSPHRASE_KEY "passphrase"
+
+OTA ota;
+String ap_default_psk(AP_PSK); // Set your default PSK in credentials.h if you want
+ESPTelnetStream telnet;
+
+WebServer server(80);
+Preferences prefs;
+
+void initDevBoard(uint8_t redValue = 0, uint8_t greenValue = 0, uint8_t blueValue = 0)
+{
+  // init RGB-LED
+  neopixelWrite(PIN_NEOPIXEL, redValue, greenValue, blueValue);
+
+  // you can initialize the dev board here ...
+}
+
+void handleRoot()
+{
+  if (server.hasArg(PREF_SSID_KEY) && server.arg(PREF_SSID_KEY).length() && server.hasArg(PREF_PASSPHRASE_KEY) && server.arg(PREF_PASSPHRASE_KEY).length())
+  {
+    const String ssid(server.arg(PREF_SSID_KEY));
+    prefs.begin(PREF_KEY, false);
+    prefs.putString(PREF_SSID_KEY, ssid);
+    prefs.putString(PREF_PASSPHRASE_KEY, server.arg(PREF_PASSPHRASE_KEY));
+    prefs.end();
+
+    serialPrint("Credentials saved for: ");
+    serialPrintln(ssid);
+    telnet.print("Credentials saved for: ");
+    telnet.println(ssid);
+
+    char success[150];
+    snprintf(
+        success, 148,
+        "<!DOCTYPE html>\
+<head>\
+  <title>ESP32-C6 OTA with webserver</title>\
+  <meta http-equiv=\"Refresh\" content=\"0; URL=/saved\" />\
+</head>\
+<body>\
+</body>\
+</html>");
+    server.send(200, F("text/html"), success);
+
+    return;
+  }
+
+  prefs.begin(PREF_KEY, true);
+  const String ssid(prefs.isKey(PREF_SSID_KEY) ? prefs.getString(PREF_SSID_KEY) : "");
+  prefs.end();
+
+  char temp[740];
+  snprintf(
+      temp, 740,
+      "<!DOCTYPE html>\
+  <head>\
+    <title>ESP32-C6 OTA with webserver</title>\
+    <style>\
+      body { background-color: #cccccc;font-family: Arial, Helvetica, Sans-Serif;Color: #000088; }\
+    </style>\
+  </head>\
+  <body>\
+    <h1>OTA and webserver example</h1>\
+    <form method=\"post\">\
+      <div>\
+        <label for=\"ssid\">SSID</label><br>\
+        <input type=\"text\" id=\"ssid\" name=\"ssid\" value=\"%s\" required>\
+      </div>\
+      <div>\
+        <label for=\"passphrase\">Passphrase</label><br>\
+        <input type=\"password\" id=\"passphrase\" name=\"passphrase\" minlength=\"8\" required>\
+      </div>\
+      <div>\
+        <input type=\"submit\" value=\"Save\">\
+        <input type=\"reset\" value=\"Clear\">\
+      </div>\
+      </form>\
+  </body>\
+</html>",
+      ssid);
+  server.send(200, F("text/html"), temp);
+}
+
+void handleSaved()
+{
+  char success[330];
+
+  snprintf(
+      success, 324,
+      "<html>\
+<head>\
+  <title>ESP32-C6 OTA with webserver</title>\
+  <style>\
+    body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; }\
+  </style>\
+</head>\
+<body>\
+  <h1>OTA and webserver example</h1>\
+  <div>Credentials saved. ESP is restarting and will be available under a new IP.</div>\
+</body>\
+</html>");
+  server.send(200, F("text/html"), success);
+
+  delay(2000);
+  ESP.restart();
+}
+
+void handleNotFound()
+{
+  String message("File Not Found\n\n");
+  message += "URI: ";
+  message += server.uri();
+  message += "\nMethod: ";
+  message += (server.method() == HTTP_GET) ? "GET" : "POST";
+  message += "\nArguments: ";
+  message += server.args();
+  message += "\n";
+
+  for (uint8_t i = 0; i < server.args(); i++)
+  {
+    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
+  }
+
+  server.send(404, "text/plain", message);
+}
+
+void setup()
+{
+  serialBegin(115200);
+  delay(5000);
+
+  initDevBoard(255, 0, 0);
+
+  prefs.begin(PREF_KEY, true);
+  String ssid(prefs.getString(PREF_SSID_KEY).c_str());
+  String passphrase(prefs.getString(PREF_PASSPHRASE_KEY).c_str());
+  prefs.end();
+  serialPrint("SSID: ");
+  serialPrintln(ssid);
+
+  ota.begin(ap_default_psk, ssid.c_str(), passphrase.c_str());
+  telnet.begin();
+
+  server.on("/", handleRoot);
+  server.on("/saved", handleSaved);
+  server.onNotFound(handleNotFound);
+
+  server.begin();
+}
+
+void loop()
+{
+  ota.handle();
+  telnet.loop();
+  server.handleClient();
+  delay(2); // give cpu time to do things
+}
diff --git a/examples/ota-telnet/credentials.h b/examples/ota-telnet/credentials.h
new file mode 100644
index 0000000..d5b84e8
--- /dev/null
+++ b/examples/ota-telnet/credentials.h
@@ -0,0 +1,3 @@
+#ifndef AP_PSK
+#define AP_PSK "12345678"
+#endif
diff --git a/examples/ota-telnet/main.cpp b/examples/ota-telnet/main.cpp
new file mode 100644
index 0000000..8587e24
--- /dev/null
+++ b/examples/ota-telnet/main.cpp
@@ -0,0 +1,53 @@
+#include <Arduino.h>
+#include <OTA.h>
+#include <DebugUtils.h>
+#include <ESPTelnetStream.h>
+#include "credentials.h"
+
+OTA ota;
+ESPTelnetStream telnet;
+
+void initDevBoard(uint8_t redValue = 0, uint8_t greenValue = 0, uint8_t blueValue = 0)
+{
+  // reset RGB-LED
+  neopixelWrite(PIN_NEOPIXEL, redValue, greenValue, blueValue);
+}
+
+void setup()
+{
+  serialBegin(115200);
+  initDevBoard(0, 0, 0);
+
+  ota.begin(AP_PSK);
+  // or use this for an existing WLAN:
+  // ota.begin(ap_default_psk, MY_SSID, PASSPHRASE);
+
+  telnet.begin();
+}
+
+void loop()
+{
+  ota.handle();
+  telnet.loop();
+
+  if (telnet.available() > 0)
+  {
+    int message = telnet.read();
+
+    switch (message)
+    {
+    case 'a':
+      neopixelWrite(PIN_NEOPIXEL, 0, 0, 255);
+      telnet.println("light");
+      break;
+
+    case 'o':
+      neopixelWrite(PIN_NEOPIXEL, 0, 0, 0);
+      telnet.println("dark");
+      break;
+    }
+  }
+
+  telnet.println("loop");
+  delay(200);
+}
\ No newline at end of file
diff --git a/examples/ota-webserver/credentials.h b/examples/ota-webserver/credentials.h
new file mode 100644
index 0000000..d5b84e8
--- /dev/null
+++ b/examples/ota-webserver/credentials.h
@@ -0,0 +1,3 @@
+#ifndef AP_PSK
+#define AP_PSK "12345678"
+#endif
diff --git a/examples/ota-webserver/main.cpp b/examples/ota-webserver/main.cpp
new file mode 100644
index 0000000..4a8821d
--- /dev/null
+++ b/examples/ota-webserver/main.cpp
@@ -0,0 +1,122 @@
+#include <Arduino.h>
+#include <OTA.h>
+#include <ESPTelnetStream.h>
+#include <WebServer.h>
+
+#include "credentials.h"
+
+OTA ota;
+String ap_default_psk(AP_PSK); // Set your default PSK in credentials.h if you want
+ESPTelnetStream telnet;
+
+WebServer server(80);
+
+void initDevBoard(uint8_t redValue = 0, uint8_t greenValue = 0, uint8_t blueValue = 0)
+{
+  // init RGB-LED
+  neopixelWrite(PIN_NEOPIXEL, redValue, greenValue, blueValue);
+}
+
+void handleRoot()
+{
+  if (server.hasArg("name"))
+  {
+    char success[350];
+    const String message(F("<!DOCTYPE html>\
+<head>\
+  <title>ESP32-C6 OTA with webserver</title>\
+  <style>\
+    .highlight {\
+      display: grid;\
+      height: 100dvh;\
+      width: 100dvw;\
+      place-items: center;\
+      font-size: 2rem;\
+      font-family: Verdana, sans-serif;\
+    }\
+  </style>\
+</head>\
+<body>\
+<div class=\"highlight\">Hello %s</div>\
+</body>\
+</html>"));
+    snprintf(
+        success, message.length(),
+        message.c_str(),
+        server.arg("name"));
+    server.send(200, F("text/html"), success);
+
+    return;
+  }
+
+  char temp[540];
+  snprintf(
+      temp, 536,
+      "<!DOCTYPE html>\
+  <head>\
+    <title>ESP32-C6 OTA with webserver</title>\
+    <style>\
+      body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; }\
+    </style>\
+  </head>\
+  <body>\
+    <h1>OTA and webserver example</h1>\
+    <form method=\"post\">\
+      <div>\
+        <label for=\"name\">Your name</label><br>\
+        <input type=\"text\" id=\"name\" name=\"name\" required>\
+      </div>\
+      <div>\
+        <input type=\"submit\" value=\"Save\">\
+        <input type=\"reset\" value=\"Clear\">\
+      </div>\
+      </form>\
+  </body>\
+</html>");
+  server.send(200, "text/html", temp);
+}
+
+void handleNotFound()
+{
+  String message("File Not Found\n\n");
+  message += "URI: ";
+  message += server.uri();
+  message += "\nMethod: ";
+  message += (server.method() == HTTP_GET) ? "GET" : "POST";
+  message += "\nArguments: ";
+  message += server.args();
+  message += "\n";
+
+  for (uint8_t i = 0; i < server.args(); i++)
+  {
+    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
+  }
+
+  server.send(404, "text/plain", message);
+}
+
+void setup()
+{
+  initDevBoard(255, 0, 0);
+
+  const char *MY_SSID = "";
+  const char *PASSPHRASE = "";
+
+  // how to setup credentials (SSID, PASSPHRASE),
+  // see ota-manager example
+  ota.begin(ap_default_psk, MY_SSID, PASSPHRASE);
+  telnet.begin();
+
+  server.on("/", handleRoot);
+  server.onNotFound(handleNotFound);
+
+  server.begin();
+}
+
+void loop()
+{
+  ota.handle();
+  telnet.loop();
+  server.handleClient();
+  delay(2); // give cpu time to do things
+}
diff --git a/examples/ota/credentials.h b/examples/ota/credentials.h
new file mode 100644
index 0000000..d5b84e8
--- /dev/null
+++ b/examples/ota/credentials.h
@@ -0,0 +1,3 @@
+#ifndef AP_PSK
+#define AP_PSK "12345678"
+#endif
diff --git a/examples/ota/main.cpp b/examples/ota/main.cpp
new file mode 100644
index 0000000..8ba635e
--- /dev/null
+++ b/examples/ota/main.cpp
@@ -0,0 +1,34 @@
+#include <Arduino.h>
+#include <OTA.h>
+#include <DebugUtils.h>
+#include "credentials.h"
+
+OTA ota;
+
+void initDevBoard(uint8_t redValue = 0, uint8_t greenValue = 0, uint8_t blueValue = 0)
+{
+  // reset RGB-LED
+  neopixelWrite(PIN_NEOPIXEL, redValue, greenValue, blueValue);
+}
+
+void setup()
+{
+  serialBegin(115200);
+  initDevBoard(0, 0, 0);
+
+  ota.begin(AP_PSK);
+  // or use this for an existing WLAN:
+  // ota.begin(ap_default_psk, MY_SSID, PASSPHRASE);
+}
+
+void loop()
+{
+  ota.handle();
+
+  // blink example
+  // neopixelWrite(PIN_NEOPIXEL, 0, 0, 255);
+  // delay(200);
+
+  // neopixelWrite(PIN_NEOPIXEL, 0, 0, 0);
+  // delay(100);
+}
\ No newline at end of file
diff --git a/examples/rgb/main.cpp b/examples/rgb/main.cpp
new file mode 100644
index 0000000..0ceda06
--- /dev/null
+++ b/examples/rgb/main.cpp
@@ -0,0 +1,26 @@
+#include <Arduino.h>
+#include <DebugUtils.h>
+
+// pinouts: https://github.com/espressif/arduino-esp32/blob/master/variants/esp32c6/pins_arduino.h
+
+// see https://github.com/wuxx/nanoESP32-C6
+
+void setup()
+{
+  serialBegin(115200);
+}
+
+void loop()
+{
+  serialPrintln("red");
+  neopixelWrite(PIN_NEOPIXEL, 255, 0, 0);
+  delay(1000);
+
+  serialPrintln("green");
+  neopixelWrite(PIN_NEOPIXEL, 0, 255, 0);
+  delay(1000);
+
+  serialPrintln("blue");
+  neopixelWrite(PIN_NEOPIXEL, 0, 0, 255);
+  delay(1000);
+}
\ No newline at end of file
diff --git a/examples/serial/main.cpp b/examples/serial/main.cpp
new file mode 100644
index 0000000..a959396
--- /dev/null
+++ b/examples/serial/main.cpp
@@ -0,0 +1,12 @@
+#include <Arduino.h>
+
+void setup()
+{
+  Serial.begin(115200);
+}
+
+void loop()
+{
+  Serial.println("loop");
+  delay(2000);
+}
\ No newline at end of file
diff --git a/examples/wifi-ap/main.cpp b/examples/wifi-ap/main.cpp
new file mode 100644
index 0000000..4825009
--- /dev/null
+++ b/examples/wifi-ap/main.cpp
@@ -0,0 +1,21 @@
+#include <Arduino.h>
+#include <WiFi.h>
+
+void setup()
+{
+  // Go into software AP mode.
+  WiFi.mode(WIFI_AP);
+  delay(10);
+  int channel = 1;
+  int ssid_hidden = 0;
+  int max_connection = 4;
+  WiFi.softAP("ESP32-c6", "passphrase", channel, ssid_hidden, max_connection, false, WIFI_AUTH_WPA3_PSK);
+}
+
+void loop()
+{
+  neopixelWrite(PIN_NEOPIXEL, 255, 0, 0);
+  delay(200);
+  neopixelWrite(PIN_NEOPIXEL, 0, 0, 255);
+  delay(200);
+}
\ No newline at end of file
diff --git a/include/DebugUtils.h b/include/DebugUtils.h
new file mode 100644
index 0000000..33b42a3
--- /dev/null
+++ b/include/DebugUtils.h
@@ -0,0 +1,26 @@
+#ifndef DEBUG_UTILS_H
+
+/**
+ * Currently facing an issue that
+ * when using serial prints over the USB Serial
+ * the ESP32 is not working w/o an open USB Serial terminal/ monitor
+ * activate serial in platform.ini if needed:
+
+[env]
+build_flags =
+  '-DSERIAL_DEBUG'
+*/
+
+#ifdef SERIAL_DEBUG
+#define serialBegin(x) Serial.begin(x)
+#define serialPrint(x) Serial.print(x)
+#define serialPrintln(x) Serial.println(x)
+#define serialFlush() Serial.flush()
+#else
+#define serialBegin(x)
+#define serialPrint(x)
+#define serialPrintln(x)
+#define serialFlush()
+#endif
+
+#endif
diff --git a/lib/OTA/OTA.cpp b/lib/OTA/OTA.cpp
new file mode 100644
index 0000000..0e35cc6
--- /dev/null
+++ b/lib/OTA/OTA.cpp
@@ -0,0 +1,169 @@
+#include <ArduinoOTA.h>
+#include <WiFi.h>
+#include "./OTA.h"
+
+#define HOSTNAME_PREFIX "ESP32-"
+
+bool loading = false;
+
+OTA::OTA()
+{
+}
+
+// get MAC of STA-, Serial- and ESPNow-MAC
+String OTA::getHostname()
+{
+  String hostname(HOSTNAME_PREFIX);
+  if (WiFi.getMode() != WIFI_STA)
+  {
+    WiFi.mode(WIFI_STA);
+    delay(10);
+  }
+  hostname += WiFi.macAddress();
+  hostname.replace(":", "");
+  WiFi.disconnect(true);
+  return hostname;
+}
+
+void OTA::startAP(const String &passphrase)
+{
+  String hostname(getHostname());
+  WiFi.mode(WIFI_AP);
+  delay(10);
+  int channel = 1;
+  int ssid_hidden = 0;
+  int max_connection = 4;
+  if (WiFi.softAP(hostname, passphrase, channel, ssid_hidden, max_connection, false, WIFI_AUTH_WPA3_PSK))
+  {
+    // Start OTA server.
+    ArduinoOTA.setHostname(hostname.c_str()); // open http://esp32-XX.local
+    ArduinoOTA.setPassword(passphrase.c_str());
+    ArduinoOTA.begin();
+  }
+  else
+  {
+    neopixelWrite(PIN_NEOPIXEL, 255, 0, 0);
+  }
+}
+
+boolean OTA::startSTA(const char *station_ssid, const char *station_passphrase, const String &passphrase)
+{
+  if (strcmp(station_ssid, "") == 0 || strcmp(station_passphrase, "") == 0)
+  {
+    return false;
+  }
+
+  String hostname(getHostname());
+  // Serial.println(hostname);
+
+  // Check Wifi mode
+  if (WiFi.getMode() != WIFI_STA)
+  {
+    WiFi.mode(WIFI_STA);
+    delay(10);
+  }
+
+  // Compare file config with sdk config
+  if (strcmp(WiFi.SSID().c_str(), station_ssid) == 0 && strcmp(WiFi.psk().c_str(), station_passphrase) == 0)
+  {
+    // Begin with sdk config
+    WiFi.begin();
+  }
+  else
+  {
+    // Serial.println(F("WiFi config changed"));
+
+    // Connect to WiFi station
+    WiFi.begin(station_ssid, station_passphrase);
+
+    // Serial.print("New SSID: ");
+    // Serial.println(WiFi.SSID());
+  }
+
+  // Give ESP 10 seconds to connect to station
+  unsigned long startTime = millis();
+  while (WiFi.status() != WL_CONNECTED && millis() - startTime < 10000)
+  {
+    // Serial.print(".");
+    // Serial.print(WiFi.status());
+    delay(500);
+  }
+  // Serial.println();
+
+  // Check connection
+  if (WiFi.status() != WL_CONNECTED)
+  {
+    // Serial.println("Failed to connect to WiFi station");
+    return false;
+  }
+
+  // print IP Address
+  // Serial.print("STA IP address: ");
+  // Serial.println(WiFi.localIP());
+
+  // Start OTA server
+  ArduinoOTA.setHostname(hostname.c_str()); // open http://esp32-XX.local
+  ArduinoOTA.setPassword(passphrase.c_str());
+
+  ArduinoOTA
+      .onStart([]()
+               {
+                loading = true;
+                // Serial.println("Start updating ");
+                neopixelWrite(PIN_NEOPIXEL, 255, 255, 255); })
+      .onEnd([]()
+             {
+               loading = false;
+               // Serial.println("\nEnd");
+             });
+  // .onProgress([](unsigned int progress, unsigned int total)
+  //             {
+  //               // Serial.printf("Progress: %u%%\r", (progress / (total / 100)));
+  //             })
+  // .onError([](ota_error_t error)
+  //          {
+  //            Serial.printf("Error[%u]: ", error);
+  //            // if (error == OTA_AUTH_ERROR)
+  //            // {
+  //            //   Serial.println("Auth Failed");
+  //            // }
+  //            // else if (error == OTA_BEGIN_ERROR)
+  //            // {
+  //            //   Serial.println("Begin Failed");
+  //            // }
+  //            // else if (error == OTA_CONNECT_ERROR)
+  //            // {
+  //            //   Serial.println("Connect Failed");
+  //            // }
+  //            // else if (error == OTA_RECEIVE_ERROR)
+  //            // {
+  //            //   Serial.println("Receive Failed");
+  //            // }
+  //            // else if (error == OTA_END_ERROR)
+  //            // {
+  //            //   Serial.println("End Failed");
+  //            // }
+  //          });
+
+  ArduinoOTA.begin();
+
+  return true;
+}
+
+void OTA::begin(const String &password, const char *station_ssid, const char *station_psk)
+{
+  if (!startSTA(station_ssid, station_psk, password))
+  {
+    startAP(password);
+  }
+}
+
+void OTA::handle()
+{
+  ArduinoOTA.handle();
+}
+
+bool OTA::isLoading()
+{
+  return loading;
+}
diff --git a/lib/OTA/OTA.h b/lib/OTA/OTA.h
new file mode 100644
index 0000000..ea2fcdf
--- /dev/null
+++ b/lib/OTA/OTA.h
@@ -0,0 +1,19 @@
+#ifndef OTA_H
+#define OTA_H
+
+class OTA
+{
+public:
+  OTA();
+  virtual ~OTA(){};
+  void begin(const String &password, const char *station_ssid = "", const char *station_passphrase = "");
+  void handle();
+  bool isLoading();
+
+private:
+  void startAP(const String &passphrase);
+  boolean startSTA(const char *station_ssid, const char *station_passphrase, const String &password);
+  String getHostname();
+};
+
+#endif
\ No newline at end of file
diff --git a/platformio.ini b/platformio.ini
index bc7f086..558231d 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -1,203 +1,94 @@
-; https://docs.platformio.org/en/latest/platforms/espressif32.html
+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
 
 [platformio]
 boards_dir = ./boards
+extra_configs = upload_params.ini
+; examples
+; src_dir = ./examples/serial
+; src_dir = ./examples/mac
+; src_dir = ./examples/rgb
+; src_dir = ./examples/wifi-ap
+; src_dir = ./examples/ota
+; src_dir = ./examples/ota-telnet
+; src_dir = ./examples/ota-webserver
+; src_dir = ./examples/ota-manager-rtos
 
 [env]
-build_flags =
-    ; to use e.g. as part of the firmware name 
-    '-DPIOENV="${PIOENV}"'
- 
-    ; coding_standards
-    -Wno-unused-variable
-    -Wno-unused-but-set-variable
-    -Wunreachable-code
-
-    ; debug level 5=VERBOSE https://docs.platformio.org/en/latest/platforms/espressif32.html#debug-level
-    ;  -DCORE_DEBUG_LEVEL=5
+build_flags = 
+	'-DPIOENV="${PIOENV}"'
+	'-DSERIAL_DEBUG'
+	-DCORE_DEBUG_LEVEL=5
+	-Wno-unused-variable
+	-Wno-unused-but-set-variable
+	-Wunreachable-code
 extra_scripts = pre:extra_script.py
 framework = arduino
-lib_deps =
-    ; place global libs here or under extra.lib_deps_external (see below)
+lib_deps = 
 monitor_speed = 115200
+; uncomment when using multiple ESPs
+; monitor_port = /dev/cu.usbmodem5
 platform = espressif32
 upload_speed = 921600
 
-; CUSTOM options
-; You need manually inject these options into a section
-; using ${extra.<name_of_option>} (see below)
 [extra]
-; https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/external-ram.html
 build_flags_psram =
-    -DBOARD_HAS_PSRAM
-    -mfix-esp32-psram-cache-issue ; https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/external-ram.html#esp32-rev-v1
 lib_deps_builtin =
-  SPI
-  Wire
+	SPI
+	Wire
 lib_deps_external =
-    ; extend libs for all platforms here
+	lennarthennigs/ESP Telnet @ ^2.2.1
 
 [esp32]
-build_flags =
-    ${env.build_flags}
-lib_deps =
-    ${env.lib_deps}
-    ${extra.lib_deps_builtin}
-    ${extra.lib_deps_external}
-    ; extend libs only for esp32 based modules here
+build_flags = 
+	${env.build_flags}
+lib_deps = 
+	${env.lib_deps}
+	${extra.lib_deps_builtin}
+	${extra.lib_deps_external}
 
 [esp32c6]
-build_flags =
-    ${env.build_flags}
+build_flags = 
+	${env.build_flags}
 lib_deps =
-    ${env.lib_deps}
-    ${extra.lib_deps_builtin}
-    ${extra.lib_deps_external}
-    ; extend libs only for esp32c6 based modules here
+	${env.lib_deps}
+	${extra.lib_deps_builtin}
+	${extra.lib_deps_external}
 platform = https://github.com/platformio/platform-espressif32.git
-platform_packages =
-    platformio/framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git
-    platformio/framework-arduinoespressif32-libs @ https://github.com/espressif/esp32-arduino-libs.git#idf-release/v5.1
-
-[esp32s2]
-build_flags =
-    ${env.build_flags}
-lib_deps =
-    ${env.lib_deps}
-    ${extra.lib_deps_builtin}
-    ${extra.lib_deps_external}
-    ; extend libs only for esp32s2 based modules here
-
-[esp32s3]
-build_flags =
-    ${env.build_flags}
-lib_deps =
-    ${env.lib_deps}
-    ${extra.lib_deps_builtin}
-    ${extra.lib_deps_external}
-    ; extend libs only for esp32s3 based modules here
-
+platform_packages = 
+	platformio/framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git
+	platformio/framework-arduinoespressif32-libs @ https://github.com/espressif/esp32-arduino-libs.git#idf-release/v5.1
 
-; *********
-; * ESP32 *
-; *********
-
-; pio board config: https://docs.platformio.org/en/latest/platforms/espressif32.html
-[env:esp32dev]
-extends = esp32
-board = esp32dev
-build_flags =
-    ${esp32.build_flags}
-lib_deps =
-    ${esp32.lib_deps}
-
-; pio board config: https://docs.platformio.org/en/latest/boards/espressif32/lolin32.html
-[env:lolin32]
-extends = esp32
-board = lolin32
-build_flags =
-    ${esp32.build_flags}
-lib_deps =
-    ${esp32.lib_deps}
-
-; Wemos https://www.wemos.cc/en/latest/d32/d32_pro.html
-; pio board config: https://docs.platformio.org/en/latest/boards/espressif32/lolin_d32_pro.html
-[env:lolin-d32-pro]
-extends = esp32
-board = lolin_d32_pro
-build_flags =
-    ${esp32.build_flags}
-    ${extra.build_flags_psram} ; 4MB PSRAM
-lib_deps =
-    ${esp32.lib_deps}
-
-; LILYGO https://www.lilygo.cc/products/t-beam-v1-1-esp32-lora-module
-[env:ttgo-t-beam]
-extends = esp32
-board = ttgo-t-beam
-build_flags =
-    ${esp32.build_flags}
-    ${extra.build_flags_psram} ; 8MB PSRAM
-lib_deps =
-    ${esp32.lib_deps}
-
-; ************
-; * ESP32-C6 *
-; ************
-; devkitc-1: https://docs.espressif.com/projects/espressif-esp-dev-kits/en/latest/esp32c6/esp32-c6-devkitc-1/index.html
-; devkitm-1: https://docs.espressif.com/projects/espressif-esp-dev-kits/en/latest/esp32c6/esp32-c6-devkitm-1/index.html
+[esp32c6-ota]
+upload_speed = 2000000
+upload_protocol = espota
+; change upload_port after connected to your network instead of the ESP AP
+; upload_port = 192.168.4.1
+upload_port = 192.168.50.105
 
 [env:esp32-c6-n16]
 extends = esp32c6
 board = esp32-c6-n16
 
+[env:esp32-c6-n16-ota]
+extends = env:esp32-c6-n16
+upload_speed = ${esp32c6-ota.upload_speed}
+upload_protocol = ${esp32c6-ota.upload_protocol}
+upload_port = ${esp32c6-ota.upload_port}
+
 [env:esp32-c6-n4]
 extends = esp32c6
 board = esp32-c6-n4
 
-; ************
-; * ESP32-S2 *
-; ************
-
-; TODO http://www.lilygo.cn/prod_view.aspx?TypeId=50033&Id=1321 with psram
-; repository: https://github.com/Xinyuan-LilyGO/LilyGo-T-Display-S2
-[env:lilygo-t-display-s2]
-extends = esp32s2
-board = esp32dev ; what about platformio board support and an own?
-
-; ************
-; * ESP32-S3 *
-; ************
-
-; pio board config: https://docs.platformio.org/en/latest/boards/espressif32/esp32s3box.html
-[env:esp32s3box]
-extends = esp32s3
-board = esp32s3box
-build_flags =
-    ${esp32s3.build_flags}
-lib_deps =
-    ${esp32s3.lib_deps}
-
-; pio board config: https://docs.platformio.org/en/latest/boards/espressif32/esp32-s3-devkitc-1.html
-[env:esp32-s3-devkitc-1]
-extends = esp32s3
-board = esp32-s3-devkitc-1
-build_flags =
-    ${esp32s3.build_flags}
-    ; PSRAM is optional
-lib_deps =
-    ${esp32s3.lib_deps}
-
-; LILYGO: https://www.lilygo.cc/products/t-display-s3
-; repository: https://github.com/Xinyuan-LilyGO/T-Display-S3
-; pio board config: https://docs.platformio.org/en/latest/boards/espressif32/lilygo-t-display-s3.html
-; Buy and support mcuw (affiliate link): https://s.click.aliexpress.com/e/_DE2TNqz
-[env:lilygo-t-display-s3]
-board = lilygo-t-display-s3
-build_flags =
-    ${esp32s3.build_flags}
-    ${extra.build_flags_psram} ; 8MB PSRAM
-lib_deps =
-    ${esp32s3.lib_deps}
-
-; LILYGO: https://www.lilygo.cc/products/t-display-s3-long
-; repository: https://github.com/Xinyuan-LilyGO/T-Display-S3-Long
-; Buy and support mcuw on aliexpress (affiliate link): https://s.click.aliexpress.com/e/_DEv67TX
-[env:lilygo-t-display-s3-long]
-board = lilygo-t-display-s3-long
-board_build.partitions = huge_app.csv
-build_flags =
-    ${esp32s3.build_flags}
-    ${extra.build_flags_psram} ; 8MB PSRAM
-lib_deps =
-    ${esp32s3.lib_deps}
-
-; SeeedStudio: https://www.seeedstudio.com/WT32-3-5-Inch-Display-p-5542.html
-; Antratek: https://www.antratek.com/wt32-sco1-plus
-; repository: https://github.com/wireless-tag-com/lv_port_esp32
-; ESP32-TUX - github: https://github.com/sukesh-ak/ESP32-TUX
-[env:wt32-sc01-plus]
-extends = env:esp32-s3-devkitc-1
-build_flags =
-    ${env:esp32-s3-devkitc-1.build_flags}
-    ${extra.build_flags_psram} ; 2MB PSRAM
+[env:esp32-c6-n4-ota]
+extends = env:esp32-c6-n4
+upload_speed = ${esp32c6-ota.upload_speed}
+upload_protocol = ${esp32c6-ota.upload_protocol}
+upload_port = ${esp32c6-ota.upload_port}
diff --git a/src/main.cpp b/src/main.cpp
index e73b4d2..114a368 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,12 +1,31 @@
 #include <Arduino.h>
+#include <WiFi.h>
+#include <DebugUtils.h>
 
-void setup() {
-  Serial.begin(115200);
-  while (!Serial);
-  
+// pinouts: https://github.com/espressif/arduino-esp32/blob/master/variants/esp32c6/pins_arduino.h
+
+// see https://github.com/wuxx/nanoESP32-C6
+
+void initDevBoard(uint8_t redValue = 0, uint8_t greenValue = 0, uint8_t blueValue = 0)
+{
+  neopixelWrite(PIN_NEOPIXEL, redValue, greenValue, blueValue); // default off RGB-LED if (0, 0, 0)
+
+  // The ESP32-C6 has an attenuator on the ADC, which defaults to 11dB. This causes the resolution to be reduced
+  analogSetAttenuation(ADC_0db);
 }
 
-void loop() {
-  Serial.println("Hello World");
-  delay(2000);
+void setup()
+{
+  serialBegin(115200);
+}
+
+void loop()
+{
+  // reset RGB-LED, ...
+  initDevBoard(0, 0, 0);
+
+  // // blink
+  // serialPrintln("green");
+  // neopixelWrite(PIN_NEOPIXEL, 0, 255, 0);
+  // delay(1000);
 }
\ No newline at end of file
diff --git a/upload_params_example.ini b/upload_params_example.ini
new file mode 100644
index 0000000..f39666d
--- /dev/null
+++ b/upload_params_example.ini
@@ -0,0 +1,8 @@
+[env:esp32-c6-n16-ota]
+upload_flags =
+  ; replace 12345678 with yours the same as AP_PSK in cred.h
+  --auth=12345678
+
+[env:esp32-c6-n16-ota]
+upload_flags =
+  --auth=12345678