This is a simple implementation of IOTA Rust client JS bindings for the Chrysalis network update. The setup uses an Arduino Nano 33 IoT (although you can use any Arduino board with a Serial connection) with a connected DHT11 sensor and LED, which can send to and receive AES-encrypted data from the IOTA Tangle using Indexation Payloads. This setup does not work on a standalone Arduino and relies on a serial connection to a development machine, capable of running a Node.js environment.

1. Arduino board with a serial connector

2. Development machine with Node.js version: '10.x', '12.x', '14.x', '15.x', '16.x'

3. DHT11 Temperature and humidity sensor

5. (OPTIONAL) An LED

4. A predefined dev.env file with the following variables set:

- NODE: e.g. https://api.lb-1.h.chrysalis-devnet.iota.cafe

- ARDUINO_SERIAL_PORT: e.g. /dev/cu.usbmodem1201

- SENSOR_DATA_MESSAGE_INDEX: ARDUINO TANGLE DATA

- DATA_SECRET: your secret AES encryption key

- IOTA_SEED_SECRET: an IOTA seed generated with the genSeed.js script

• npm run portscan: Find the serial port on which the Arduino communicates with your machine.
• npm run send: Execute the sendMessage.js script to listen to the serial port and send data to the Tangle.
• npm run receive: Execute the receiveMessage.js script to retrieve all messages on to the Tangle for a given index.
• npm run genSeed: Execute the generateSeed.js script to generate an IOTA seed.
• npm run genAddresses: Execute the generateAddresses.js script to generate IOTA addresses from a given seed.
• npm run receiveExample: Execute the getMessagesExample.js script to retrieve random messages from the Tangle.

First install all npm modules via

npm install

Then load the dht11.ino sketch onto the Arduino and finally - run one of the scripts.