A choc-spaced Corne PCB modified to support LIR2032 batteries and XIAO BLE microcontroller.
Ordering from JLCPCB will cost about $8 + shipping.
| Name | Qty | Package | Value | Description |
|---|---|---|---|---|
| U1 | 1 | SMD | MCU | XIAO BLE |
| U2 | 1 | SOT-23-6 | DW01A | Battery protection IC |
| U3 | 1 | TSSOP-8 | FS8205A | Dual N-Channel MOSFET |
| C1 | 1 | 0603 | 100n | SMD Capacitor |
| R1 | 1 | 0603 | 100R | SMD Resistor |
| R2 | 1 | 0603 | 1k | SMD Resistor |
| Q1 | 1 | SOT-23 | SI2302 | N-channel MOSFET for reverse polarity protection |
| S1 | 1 | SMD | SPDT | 7 pin SMD SPDT Switch |
| J1 | 1 | SMD | JST-GH | JST-GH 2 pin Horizontal connector |
| BT1 | 1 | SMD | LIR2032 | LIR2032 Battery Retainer |
| D1-36 | 36 | SOT-123 | 1n4148 | Diodes for keyboard matrix |
| SW1-36 | 36 | THT | PG1350 | Kailh Choc Switches |
- If using LiPo battery, only solder U1, J1 and S1. The rest of the components are for protecting the LIR2032 and are therefore not needed. Make sure you're connecting the battery correctly.
- If using LIR2032, don't solder J1.
- Either SMD or THT diodes can be used.
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