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rev 3

A project log for TWR_TDM

tiny drum machine

Jonathan BrodskyJonathan Brodsky 04/30/2020 at 01:360 Comments

Assembled rev 3 over the course of the past three days - this one makes some pretty major changes:

This time I bit the bullet and actually soldered stuff in, rather than putting female headers everywhere so I could rescue the expensive bits. This let me mostly assemble it, with two execeptions. I stacked up the two ffc connectors that are underneath the teensy, rather than offsetting them. Also the ffc connector doesn't actually fit underneath the battery, so I can't fit it inside the sandwich.

I think both of these issues are fixable.


The larger question I'm up against is if I want to take a hard turn away from teensy, and just make this an stm32 board. It would majorly lower the complexity in some ways, and definitely lower the cost. I could potentially also make it a single board, rather than this sandwich stackup.

I think in need to grind on that question for a few more days, while I'm working on the firmware. Luckily the work that I'm doing on the firmware is transferable to whatever arm chip I end up slotting into the thing, so that isn't a huge issue.

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