Minimalist AVR programmer

I always like a challenge, so when I saw [simpleavr]s vusbtiny programmer, I started to wonder how small I could make an AVR programmer. All in all I’m pretty pleased with the result.
The schematic is almost the same as the original one. I only added a LED an resistor to indicate a proper power supply.

Minimalist AVR programmer

Since I wanted to try a simple USB connector made only with some bare pads on the PCB, I also added an additional Mini USB socket just to have at least one working connection.
Except for the programming header I used only SMD components, mostly 0805 sized. The board itself is 12mm x 28 mm, the width was dictated by the size of the USB connector.
The boards were made by Seeed Studios Fusion service and came out great. The bare USB connector works reasonably well, if you add some material to the back of the PCB. Some electrical tape works well, hot glue might also be a good choice.
For the software, the original code from simpleavr works great, or if you use an Attiny 85 instead of the 45, the code from [kerhibar]s great little wire project should also work.

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About The Author

Ibrar Ayyub

I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough research and presenting information in a structured and logical format.

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