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This PCB should completely replace the Arduino and all the separate shields I currently have made up to build my own Intervalometer.
It'll still be using the same chip as the Arduino Uno (the ATMega328) as its core, but this'll let me get everything onto a single board, with connectors for everything that needs connecting inside the little box. :)
My first two temperature control boards arrived today. I should have
some time to solder one up tomorrow.
Preferred pcb paper.
Xander learned how to make circuit boards with a laserjet and together we made this podcast
I wanted to perform an experiment and attempt to make my own "motherboard" of sorts for older locomotives, i.e. Bluebox geeps, SDs, etc.
It took a bit of time to try to find the best way to transfer the patterns drawn in MS word, but in the end it was vinyl t-shirt transfer paper that proved to be the best.
A 20-30 minute soak in ferric chloride etched the copper, then baking soda was used to stop the reaction followed by a rinse with running water.
Now that this proof of concept was a success, I'll update the board design with more output pads and provisions for resistor usage.
the pcb layout for the wind-up bird´s brain
circuit design by hc gilje, pcb layout design by Roar Sletteland
more info: hcgilje.wordpress.com/resources/xbee_arduino_code/