Today we will be designing a Multipurpose Power Supply. The Power Supply will be an Arduino UNO Power Supply Shield which will output multiple voltage range such as 3.3V, 5V and 12V.

This Automatic Battery charger circuit can be used to charge a 12V, 7Ah battery, or above. The charger maintains float voltage, if battery is fully charged.

2. Using Arduino Power Jack Arduino Uno and all many other big form factor Arduino boards are equipped with a standard 2.1mm DC power jack. Arduino Uno accepts 7-12V dec through this port and the ...

12v_Compressor An open-source Arduino controlled 12v mobile compressor using 3d printed and upcycled parts. This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International ...

They're 12v so the arduino powers one lead at 5v for the signal, the ground is shared between the 5v and 12v, and finally the LED's are driven by a 12v source separate from the arduino (12v x 2a ...

Arduino software and hardware to control a 12V off-grid solar system with 1000W power inverter for a fridge and lighting. The arduino is a 3V JeeNode, but I might change it for a simple arduino.

Having kids now I thought its time to dust off the old model train set - nothing fancy just plain old 12V DC model.

Having kids now I thought its time to dust off the old model train set - nothing fancy just plain old 12V DC model.

Build Your Own Arduino Voltmeter Circuit and Voltage Divider Which Can Measure Voltages From 0V to 30V, Including 12V. Visit To learn More.