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sbunger
A custom designed split keyboard! Has sixty keys and maxes out the XIAO nrf52840's GPIO. It is wireless and has a battery on each side.
| Reference | Value | Description |
|---|---|---|
| Q1 | PMOS_1.00.60.35MM | |
| U1 | NRF52840_QF | |
| U2 | BQ25100 | |
| U3 | LSM6DS3TR-C | |
| U6 | 3.3V | |
| USB1 | USB2.0-TYPE-C | |
| ANT1 | ANTENNA-AN3216 | |
| BAT0,NFC1,NFC2 | TEST-POINT'4080' | |
| C1,C5,C8,C24,C34 | 100nF |
| C2,C7 | 10pF |
|---|
| C3,C4,C6,C9,C22,C25,C29,C30,C39,C41,C42 | 2.2uF |
|---|
| C10 | 1nF |
|---|
| C11 | 1pF |
|---|
| C31 | 820pF |
|---|
| C32,C33 | 15pF |
|---|
| C35 | 100pF |
|---|
| C36 | 0.8pF |
|---|
| C37 | 0.5pF |
|---|
| C38 | 4.7nH |
|---|
| C40,J1,J2,U7 | DNP |
|---|
| CHG0 | RED |
|---|
| D1 | DIODE'0603' |
|---|
| GND0 | GND |
|---|
| K1 | BUTTON-4P |
|---|
| L3 | 10uH |
|---|
| MIC1 | MSM261D3526H1CPM |
|---|
| R1,R2 | 5.1k |
|---|
| R3,R5,R7 | 2.2k |
|---|
| R4,R13-R15,R20 | 10k |
|---|
| R9 | 100k |
|---|
| R10,R11 | 33R |
|---|
| R12,R18 | 2.7k |
|---|
| R16 | 1M_1% |
|---|
| R17 | 510k_1% |
|---|
| RGB6 | RGB |
|---|
| TP1-TP3,TP5 | TEST-POINT'4545' |
|---|
| X1 | 32.768KHz |
|---|
| X2 | 32MHz |
|---|