This is an Arduino board with lots of sensors and other stuff on it. It has built-in real-ttime clock, temperature sensor, light sensor, infra red receivers, LED display, battery, and battery charger circuit, as well as some LED and push buttons. There's also a small buzzer included, but it is very quiet. But it is not big deal regular buzzers are too loud for me. I planned to use it to control lights or some other stuff fin house by using a relay. But it can be used for so many things, I love boards that have built in display, so I can display data directly on it and I don't need to use serial monitor. Devils also have built-in battery and battery charger. And can also be solar powered. I used easyeda.com for board design. I made some mistake. Correct PCB is here, project is public so you can order same PCB if you want. https://easyeda.com/editor#id=|06ddc8a1aa154a99852de68851f67850 code: https://drive.google.com/open?id=1nh7...
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