SmartMon v2.7ex is available on Tindie: https://www.tindie.com/stores/nEXT_EVO1/
http://www.esp8266-projects.com/2017/...
Part3 of the SmartMon v2.7ex series - Power Monitor software step-by-step tutorial
New released BMS SmartMon v2.7ex Board. The easiest to use extension board fully compatible with Arduino, ESP8266, ARM, PIC & other available MCu's out there. Best tool for monitoring your Voltage/Current and Power consumption for your Projects, devices, batteries, power supplies and many more!