The KBoard is a simple RP2040 devboard designed from the guide!! I made some changes visually like the orientation of the chip bc lowk 45 degrees looks cooler. routing was a nightmate tho!!
- RP2040 microcontroller
- USB-C connector for programming/power
- Standard pin headers
- Convert to a BadUSB design
- Wi-Fi/BT support
- Battery Support?
A combined BOM including JLCPCB part numbers:
| Id | Designator | Footprint | Quantity | Designation | Supplier & Ref Ref | JLCPCB Part # | Unit Price |
|---|---|---|---|---|---|---|---|
| 1 | J3,J2 | PinHeader_1x20_P2.54mm_Vertical | 2 | Conn_01x20 | |||
| 2 | U1 | QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | 1 | RP2040 | C2040 | $1.8330 | |
| 3 | U3 | Winbond_USON-8-1EP_3x2mm_P0.5mm_EP0.2x1.6mm | 1 | W25Q128JVS | C2843335 | $1.1730 | |
| 4 | C8,C5,C2,C11,C17,C12,C9,C7,C6,C4,C3 | C_0402_1005Metric | 11 | 0.1uF | C1525 | $0.0264 | |
| 5 | R5,R7 | R_0402_1005Metric | 2 | 1K | C11702 | $0.0024 | |
| 6 | C16,C15 | C_0402_1005Metric | 2 | 33pF | C1562 | $0.0040 | |
| 7 | Y1 | Crystal_SMD_3225-4Pin_3.2x2.5mm | 1 | 12 MHz | C9002 | $0.1290 | |
| 8 | U2 | SOT-23 | 1 | MCP1700x-330xxTT | C39051 | $1.9695 | |
| 9 | SW1 | SW_Push_SPST_NO_Alps_SKRK | 1 | SW_Push | C720477 | $0.0850 | |
| 10 | R6 | R_0402_1005Metric | 1 | 10K | C25744 | $0.0010 | |
| 11 | R4,R3 | R_0402_1005Metric | 2 | 27 | C25100 | $0.0120 | |
| 12 | R2,R1 | R_0402_1005Metric | 2 | 5.1k | C25905 | $0.0020 | |
| 13 | J4 | PinHeader_1x03_P2.54mm_Vertical | 1 | Conn_01x03 | |||
| 14 | C14,C13 | C_0402_1005Metric | 2 | 10uF | C19702 | $0.0224 | |
| 15 | C10,C1 | C_0402_1005Metric | 2 | 1uF | C52923 | $0.0116 | |
| 16 | J1 | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | 1 | USB_C_Receptacle_USB2.0_14P | C165948 | $0.3388 |