The WeMos D1 Mini is a fantastic little board based on the ESP8266 microcontroller with WiFi, but it needs 5V USB power to run. This shield gives the D1 Mini the ability to accept power from 7 to 14Vdc (up to 20Vdc in a pinch) via a 2.1mm DC jack or screw terminals. Very handy … Continue reading Power Shield for WeMos D1 Mini