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Breadboard proof of concept.
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Simple midi I/O socket, without opto isolation. Works for debug and prototype but ill advised for the final version.
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This was a project I embarked upon right out of college. It's a great proof of concept, but the wires become a spider web of complexity rather quickly. The concept of strap wiring was unheard of to me at the time, so things got a little hairy behind the panel.
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Ironing the circuit onto a copper clad board for pcb etching prep.
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Here you can see an excellent image transfer and a clean etch. Even the holes in the pads are clear. This will help guide the drill bit into position when drilling the holes for components. Save a lot of bits. I can easily drill the entire board without breaking a single bit.
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Goo Gone gets the board nice and clean and ready to drill.
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Soldering the components on. I like to use some solder flux on the board before I solder each node. It helps the solder flow and ensures good contact with the copper. No shorts is always the goal.
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Dip sockets, resistors, standoffs, caps, beads and jumpers. Awaiting a few more parts to come in.
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Strap wiring all the grounds in. Keeping the jumper cable clutter to a minimum this time around.
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Here I have moved a switch and added a pushbutton for use as a function programmers button. Still waiting for those 5 pin midi din sockets to arrive.
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Everything wired up and ready to connect to the pcb using female jumper wires. I'm still waiting on two midi jacks, and I need to wire up the rotary encoder.
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IC's are in. Still waiting on some male headers to arrive and then it's time to program.
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These little DAC break out boards are cheap and very handy for arduino projects. I've used two dacs on two separate addresses over the same bus. Works great. I get two note polyphony CV. Three would be even better.
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Labels for functions.....
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