You want to determine precise times when the Arduino will run special code segments in a sketch, without using the timers and counters in the Arduino hardware. You have some skill and experience ...

According to documentation, the first iv-9 leg is common, second is indication dot. You need to connect common(first) to GND then every single leg to outputs of your ...

In this guide, we will create a simple and precise digital clock using the Raspberry Pi Pico RTC DS3231 Module through the Arduino IDE. We will use a 16x2 I²C LCD screen to display the information.