I don't want to be making a new symbol every time I need one, I want to start my schematic and do it all. In order to use a component in a schematic, I need to have a symbol, which I may need to generate myself. I haven't done any design yet, but from experience I know the next "productive" step is to enter the schematic into the EDA (electronic design automation) tool, flip to layout and start drawing. I collect the following references:Īrmed with these, I can approach the design. I know I want it to have MIDI ports, teensy audio, and some button matrixing, and the thing will need some power. Find Some Reference DesignsĪt this point I'm about 80% sure what the product will be, but focusing in will have diminishing returns so it's time to get what I know down on paper. I asked, "How big is it? How many features are there, and what are they? What voltages will it operate from?" Eventually I came to a list of things that would always be present, and I knew I had a place to start.
The students prefer a hard-and-fast set of rules that they can blindly follow, but the process of figuring out a product's final form can be highly organic.įor this project, I discussed thoughts with fellow engineers. The only time it was really talked about was during senior design, 4th year. Specifying was an interesting lesson in college.
And I don't want to solder all these goofy wires and muxes together. Unfortunately, micro-controllers only have so many pins, and I want more. What I'd like to do is just wire knobs to it. It's a convoluted process that involves double checking IN/OUT cables, using counter-intuitive midi controller programming/bank selection, and a nasty spreadsheet that maps controller numbers to parameters so I can keep them all straight. It uses two of PJRC's designs that are *generally connected as intended, though I could have made use of the Teensy Arduino Shield adapter board.*īut my prototype doesn't have any knobs on it! As a prototype, it uses the midi bus to get knob data from a midi controller, allowing me to test my code. This is what the original prototype looked like.
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