NodeMCU ESP8266 in access point mode: the simplest way to make Wi-Fi controlled Robot Car from Bluetooth Arduino Robot Car + Android App.
by Andriy Baranov
Arduino Project: How to make a Fidget Spinner RPM counter with Hall-effect sensor.
Make smartphone controlled lamp using Arduino Uno, bluetooth module HC-06, and create Android App with MIT App Inventor.
A simple Arduino clock without RTC module for beginners.
Project in progress by Techno
A project that speaks on behalf of mother nature. It is real time air quality monitoring device.
Project tutorial by Oizom
Maybe it is necessary to adjust the contrast of LCD (R2 10kOhm on diagram)
Here is a copy of my project with wiring diagram:
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