Dev kits for a team project

Programmer/debugger dev kits for a team project on Nordic's nRF52

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To work on a hardware project in a distributed team, we need identical development kits with which we can program and debug the custom board that we're bringing up on Nordic's nRF52 platform.

1. Create easily-assembled (and operated) dev kit to program/debug custom board.
2. Learn about and get comfortable making jigs/fixturing.
3. Develop system that tracks & tags kits with unique identifiers and records boards.

  • 1 × Base A plank of pine
  • 1 × Box Removable plywood box protecting the base and contents of the dev kit
  • 1 × nRF52-DK type development board Has onboard nRF52, and can program/debug that and external modules
  • 1 × 3D printed dev board mounting bracket This secures the dev board to the base of the dev kit
  • 1 × Tag-Connect JTAG cable Pogo pin tipped cable that mates with our board's programming pads

  • Box assembly

    omarmung04/22/2019 at 18:14 0 comments

    The dev kit has to have a physical base, and something that can protect the fragile boards and wiring within, even when team members are on the go. I made a box design in Fusion360 and cut plywood and pine with a hand-saw...

    Then wood glue and rubber bands...

    And then a fresh coat of paint..

    Not pictured, nailed them together for extra strength and to stand up to the stresses of general life like being thrown in a backpack or dropped.

    A few mistakes here and there, mostly in trying to nail such thin plywood, where nails would veer off and rip out the sides instead of going in straight and clean. And my hand sawn cuts weren't perfect, but nothing that couldn't be cleaned up with a microplane and some sandpaper. 

    If I could've done these on a tablesaw, I would've painted the plywood before cutting, but I'd noticed before that hand sawing plywood sometimes strips the paint away at the cut, so I opted to paint after assembly.

    Useful for this stage was Tom Sachs' Love Letter to Plywood, and having basic hand tools and a ruler.

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