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this is a Magsafe Case for a flattened Xaio NRF52 Device.
mine is running Meshtastic
i did take some inspiration from this design:
https://www.thingiverse.com/thing:7285462
especially regarding the flattening of the NRF52
it is somewhat tedious to do but achievable
check out gizmobuddys Guide on how to do it
at the bottom of this Post i also have a write-up on how i did it with fairly basic tooling
modifying his design would have been more work than just making my own as my phone has a camera bump that interferes with that
plus i would have had to modify other bits
Bill of Materials:
Xaio NRF52 + Antenna
USB-C Battery charging PCB
LiPo Battery
6 Threaded insers M2 4x4mm
6 4-6mm M2 Screws
Toggle Switch
Magsafe Magnet Sticker
the Battery i used is a LiPo measuring about 55x40x10mm
the swith casing is about 13x7x7mm (excluding the switchy bit and the Pins)
and the flattened Xaio NRF52 is just below 12mm tall for me. including some space for the battery and Antenna cable coming off of it
I'm also using a dedicated USB-C charging board because it can charge the LiPo a little faster than whatever the NRF is doing.
the Battery is wired to the charging PCBs battery pads
the Chargers negative out is connected directly to the NRFs negative battery Pad and the chargers positive out is connected to the NRFs positive battery Pad via the power switch.
threaded inserts:
they are heat set ones
but seeing as i only have a Resin Printer because my main thing to print are minis and…
