3 ms·
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
by 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, $25 is probably an underestimation with qty=1. Passives and friends can also go up quickly depending on design. There is also an SMT antenna present that could cost a few bucks.
- _Microft 4y agoJLCPCB should still have special offers for 4-layer PCBs up to 50mm tall and wide. It might be that you can get five boards made for less than 10€/$. 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 agoCreator here, you are not far off. I should share bom with prices, will do that on github.