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The UPDI-3, is a simple add-on board allowing the programming of the new AVR microcontroller from Microchip. The board works as bridge between the UPID target, and a serial communication. The serial communication can from different sources, eg. an FTDI cable or the FTDI-USB. The board has been designed in KiCAD by using the fab libraries.

Below the board schematic and layout :

Here the UPDI-3 pinout:

Here the soldered board , useful to look up which components are needed:

And here an example on how to connect the UPDI-3 board between a target and the FTDI-USB:


  • Traces PNG:

  • Holes PNG:

  • Cut PNG:

documentation/electronics/updi.txt · Last modified: 2021/03/03 17:55 by daniele