The smallest Arduino ever created

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Jul 14, 2017

Project update 3 of 13

Current State of the µduino

Final design!

I mentioned last week that the µduino will incorporate dual power modes with a jumper to switch between 5V and 3.3V modes. The µduino was completely redesigned last week and now it will operate at both voltages! This will be done by placing a jumper (will be included) across two of the pins. The left and center pin will select 3.3V mode, and the center and right pins will select 5V mode. Above is a 3D render of the change with the new voltage regulators. The header shown is for reference only, as the final version will have a right-angle header to keep flush against the board (cuts down on overall height). The ICSP ports had to be removed as there was too little space to squeeze them into the design. The boards will be pre-programed with the bootloader, so this shouldn’t be too much of an issue. I’ll see if I can possibly add them back in though.

I’ve said it before and I’ll say it again, thank you for all those who’ve pledged your support so far in helping make the µduino a reality! One month to go, so tell your friends and help spread the word! More updates to follow, so stay tuned!



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