https://github.com/peppson/simple-updi-programmer

Arduino UPDI programmer, based on jtag2updi.
https://github.com/peppson/simple-updi-programmer

Last synced: 5 days ago
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Arduino UPDI programmer, based on jtag2updi.

• Host: GitHub
• URL: https://github.com/peppson/simple-updi-programmer
• Owner: Peppson
• License: mit
• Created: 2024-06-30T21:39:36.000Z (7 months ago)
• Default Branch: main
• Last Pushed: 2024-07-08T12:16:23.000Z (6 months ago)
• Last Synced: 2024-11-13T11:19:42.526Z (2 months ago)
• Language: C++
• Homepage:
• Size: 89.8 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        

# simple-UPDI-programmer (jtag2updi)

An Arduino UPDI programmer, based on [ElTangas jtag2updi](https://github.com/ElTangas/jtag2updi).  

Configured to be uploaded straight from PlatformIO, instead of Arduino IDE.  

Simply change the target board in `platformio.ini`.  

    board = nanoatmega328new

  

## Hardware

Guide on how to build your own programmer: [Link](https://daumemo.com/diy-updi-usb-programmer-which-can-be-made-with-cheap-hardware/)  

For anyone interested, I've added two SPDT switches: one for toggling VCC between 3.3V and 5V,   

and another to bypass the 4.7K resistor, which I've found sometimes helps to establish connection.  

  

> ***J2** has to be ***OPEN*** when programming the programmer itself*.  

![simple_schematic.png](/simple_schematic.PNG)