Pump Controller Based on Arduino and esp-link. The controller can monitor discharge head and motor current so to protect the pump from dry running. The controller send mqtt data via esp-link (act as serial wifi bridge) to an mqtt broker running. For mo
Using an ESP8266 ESP-01 module and an Arduino Pro Mini 3.3V I wirelessly update all outputs from my thermostat to here for data analysis and because it's cool. This requires a voltage divided rectifier since thermostats run at least 24 VAC RMS.