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/diy/ - Do-It-Yourself


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>> No.2043023 [View]
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Here's a little board I whipped up; it's an AVR-ISP programmer board for an ATtiny13 or 85 or anything else with that pinout. Socketed for his pleasure. With three outputs for the two unused i/o pins and ground, to jab into a breadboard and give an LED or button for testing purposes. That's two filter caps on the back. No power source outside of the ISP header, hope that isn't a mistake. It isn't meant to be a dev-board, just a little platform to see if I can blink an LED to ensure the MCU is working and taking my code.

But more importantly, it's a 2-sided SMD board with a few vias, which I'll use to hone my home-etching ability. First etch one side, then drill the holes, then use those holes to align the etch-resist on the second side. I'll still be hand-painting the solder mask as etch resist, but considering the simplicity of the board, it should be relatively simple. I have a cheap hacksaw this time too, though no vice or uncarpeted workspace. Will cut it outside I guess. Once I test my ability to use my DIP ATtiny13s I'll buy some SOIC ones. Considering I have some simple projects in mind, I might dabble in assembly.

Oddly enough KiCAD has 2-sided side-mount SMD D-sub connectors in its footprint and 3D model library, but none for 0.1" pin or socket headers.

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