I decided to tackle something simple for my first attempt at etching a circuit board. I wanted something with a low parts count, and that was easy to test. I decided on a voltage level shifter circuit, as it only requires a MOSFET and 2 resistors per channel, and 4 channels is generally sufficient for most digital protocols.
I spent a day learning Eagle CAD, in which I created, destroyed, and re-created the circuit about 5 times. I ended up with a very clean-looking schematic, and two separate boards (both hand-routed); one for SMT parts, and one for through-hole. Both boards are really tiny; they easily fit on a breadboard.
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Sick post! Keep up the great work!
I definitely learned a lot from my first outing in Eagle and PCB etching. The next board is already under design. It’s another “Hello World” type of thing, but it’ll replace a chunk of perfboard with something a little more “permanent”, which is nice.
Thanks for reading!
And thanks, as always, to Adafruit Industries. Keep making great stuff.