Week 13 / Output Device

Step 1

I wanted to make a simple board for fun, and in the same time the HelloArduino was not powerfull enough to power the heater (PRUSA heating cartridge).

I choosed to draw a board with a mosfet to control a second power supply with a HelloArduino with an Atmega 328p chip

HelloArduino 328p source

You'll need this boards.txt file to burn the bootloader in an Arduino IDE

NB : in this case i am using the 8Mhz internal clock of the chip, you must modify the board.txt file if you want to use the 20Mhz external one.

Step 2

I drew a mosfet (N-Channel / 60 V / 3 A / 156 mOhms) board ready to receive an output signal from my HelloArduino, in a system where two different power supplyes are involved

EagleFiles

Step 3

The complete board

Step 4

Le test

I switch power from 3,3v to 5v and it work fine

I modified a simple button example from the IDE Arduino to make a mecanic blink with a red LED

The Arduino uno is here as second power supply

The Output signal opens the gates