6 ms·

Does anyone have a rough idea how much something like this would run in quantity=1? I was surprised there wasn't a BOM, which I thought was standard for open so

Does anyone have a rough idea how much something like this would run in quantity=1? I was surprised there wasn't a BOM, which I thought was standard for open source hardware like that I would expect the display (at $5 +s/h) would dominate the cost, but the processor and ram could, too, if it's like building a PC

bloggie 4y ago
nrf52 - $7 Display - $5 Accel - $3 Pulse ox - $12 Haptic driver - $1 Haptic motor - $1 spi flash - $2 Battery charger - $5 Battery LVC - $2 Battery - $3 Buttons - $3 Passives and such - $10 PCB - $25 Total - $79 Prices from octopart and some quick guessing, shipping not included. PCB would be the first to come down in price with even a small quantity, $25 is probably an underestimation with qty=1. Passives and friends can also go up quickly depending on design. There is also an SMT antenna present that could cost a few bucks.
- _Microft 4y ago
  JLCPCB should still have special offers for 4-layer PCBs up to 50mm tall and wide. It might be that you can get five boards made for less than 10€/$. I’ll check later. Edit: yes, $2 for five pieces of 6-layer, 1.2mm thickness PCBs with ENIG surface finish. Unbelievable, isn’t it? 4-layer, 0.8mm, are possible for a few dollars more if thickness matters a lot (the finish will only be lead-free HASL, though).
- Jakkra 4y ago
  Creator here, you are not far off. I should share bom with prices, will do that on github.
crote 4y ago
You can just export the BOM from the KiCad source files. No need to commit what is essentially a build artifact to the source repo ;-)