Label
the
Output
Using a Sharpie, clearly label the barrel jack connector’s voltage relative to the output. Feel free to
add an additional barrel jack when not in use.
Power
Your
Circuit!
Connect the power supply to your circuit and power it up! I personally use the power supply as a tool
for basic testing. Usually the 12V side is connected to an Arduino’s barrel jack. The 5V output is
used for more power hungry loads such as the the RGB LED Matrix or a few meters of addressable
(WS2812B, APA102, etc) LEDs.
Arduino Mega 2560 and 32x64 RGB LED Matrix Powered by the 12V/5V Power Supply
