Learn how to initialize and manage EEPROM settings on Arduino to store data like user preferences, calibration values, or ...

Figure an Arduino most matches the "Other" category. To be specific, it isn't an Arduino brand, it is a DigiSpark, but the trouble isn't with the device itself. The problem is with a buzzer. I got ...

Your Arduino gets bored to death with such a simple task. A 74HC573 latch would have done the same, doesn’t need programming and just costs a few cents.

Each buzzer consists of an Arduino Pro Mini 3.3 V, a nRF24L01, and of course a big pushbutton on the top. Each one is powered by a 110 mAh 3.7 V LiPo battery, though ...