Currently, this LoLIn Nodemcu is used to measure the capacity from recycled 18650 notebook batteries. Values maybe empty before new battery start.
Solar Powered Cellular (or WiFi) Weather Station using Lilygo Sim7000G development board and SHT30 sensor for temperature and relative humidity measurements. Also attached a tipping bucket rain gauge and BME280 for internal temperature, humidity, and pres
Solar Weather Station @Yokohama Japan esp8266, BME280, INA219, ADS1115, NJL7502L, Solar, Battery, aa, NiMH