When Arduino debuted, most sensors and other interfacing devices ran on 5 volts. This tutorial shows how to hack your 5 volt Arduino board to run on 3.3 volts. It is a simple procedure involving ...

I've tested this code using an Arduino Nano + Level Shifter and it worked like a charm! As I want to design the smallest possible PCB so that it fits into my Fanatec QR Adapter (52mm to 70mm) I want ...

VCC is the power supply pin of the soil moisture sensor that can be connected to 3.3V or 5V of the supply. But do note that the analog output will vary depending on the provided supply voltage. GND is ...

The RA4M1 I2C controller runs slower than the selected clock rate for some 3.3V devices. These devices run at the full rate on Uno R3. I have had no problems with 5V devices. All 5V devices I have ...