Electricity meter blink counter nodemcu lua code for ESP8266.

• Upon starting it establishes connection to provided wifi ssid
• It counts electricity meter flashes and stores them in counter variable
• It opens a socket and exposes counter.
• Once prometheus scrapes the value, counter gets reset to 0.

• I use this site to build custom nodemcu firmware: nodency-build.com

$ esptool.py --port /dev/ttyUSB0 --baud 115200 write_flash --flash_size=detect 0 /path/to/nodemcu.bin

• You can get it at Esplorer site
• Extract and launch with java 1.7+ $ java -jar ESPlorer.jar

• move location_example.lua to location.lua and change to your ssid/psk
• upload files through esplorer.

Used his way of connecting to wifi/exposing stats for prometheus