Chastity
About the Chastity PCB
Chastity is an open source RP2040/RP2350 PCB design by brad-za, published on GitHub. It is a 2-layer board measuring 138.3 × 111 mm, with 336 components from 48 distinct parts.
Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W25Q128JVS, USBLC6-2SC6, XC6206PXXXMR, TPS2553DBVR and 74AHC1G125. By type, the board carries 96 capacitors, 62 diodes, 60 LEDs, 28 resistors, 12 ICs and 6 connectors.
It belongs with the keyboards and power & battery designs in this gallery.
From the project
Ergo split keeb
A wireless split ergonomic keyboard featuring Kailh Choc v1 low-profile switches, rotary encoders, and ZMK firmware.
- Split Design: Ergonomic 30-key split layout per half (60 keys total) - Wireless: Powered by nice!nano v2 controllers with ZMK firmware - Low Profile: Kailh Choc v1 switches for a sleek, portable design - Rotary Encoders: One encoder per half for volume/scroll control - Hot-swap: Choc v1 hot-swap sockets for easy switch replacement - Battery Powered: Individual LiPo batteries for each half - Power Management: Individual power switches per half
Main components on the Chastity
Chastity bill of materials (BOM)
336 components, 48 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | W25Q128JVS XC6206PxxxMR | SOT-23-3 | U1 |
| 1 | USBLC6-2SC6 SRV05-4 | SOT-23-6-routable | U2 |
| 1 | RP2040 | QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U3 |
| 1 | XC6206PXXXMR W25Q128JVS | SOIC-8_5.23x5.23mm_P1.27mm | U4 |
| 1 | TPS2553DBVR XC6206PxxxMR | SOT-23-3 | U5 |
| 1 | 74AHC1G125 SRV05-4 | SOT-23-6-routable | U6 |
| 1 | TPS2553DBVR W25Q128JVS | SOIC-8_5.23x5.23mm_P1.27mm | U7 |
| 1 | W25Q128JVS RP2040 | QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U8 |
| 1 | XC6206PXXXMR 74AHC1G125 | DRL5 | U9 |
| 1 | RP2040 TPS2553DBVR | SOT-23-6 | U10 |
| 1 | 74AHC1G125 | DRL5 | U11 |
| 1 | USBLC6-2SC6 TPS2553DBVR | SOT-23-6 | U12 |
| 2 | CRYSTAL_GND24 Crystal_GND24 | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1, Y2 |
| 1 | USB_C_RECEPTACLE_USB2.0 Conn_01x08_Pin | PinHeader_1x08_P2.54mm_Horizontal | J1 |
| 1 | CONN_01X05 USB_C_Receptacle_USB2.0 | USB_C_Receptacle_HRO_TYPE-C-31-M-14 | J2 |
| 1 | CONN_01X08_PIN Conn_01x08_Pin | PinHeader_1x08_P2.54mm_Horizontal | J3 |
| 1 | USB_C_RECEPTACLE_USB2.0 Conn_01x05 | PinSocket_1x05_P2.54mm_Horizontal | J4 |
| 1 | CONN_01X08_PIN USB_C_Receptacle_USB2.0 | USB_C_Receptacle_HRO_TYPE-C-31-M-14 | J6 |
| 1 | Conn_01x05 | PinSocket_1x05_P2.54mm_Horizontal | J8 |
| 4 | SW_Push | SW_SPST_TL3342 | BOOT1, BOOT2, RST1, RST2 |
Show 28 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | Fuse_Small | Fuse_1206_3216Metric | F1, F2 |
| 60 | MX_SW_HS | SW_MX_HS_1u | MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +52 |
| 2 | USB_C_Receptacle_USB2.0 | USB_C_Receptacle_HRO_TYPE-C-31-M-14 | SPLIT_L1, SPLIT_R1 |
| 2 | RotaryEncoder_Switch | ROT_Alps_EC11E-Switch | SW1, SW2 |
| 60 | SK6803MINI-E | LED_MX_6028R | LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 +52 |
| 62 | D_Small | D_SOD-123 | D1, D2, D3, D4, D5, D6, D7, D8 +54 |
| 3 | 1u | C_0402_1005Metric | C1, C2, C19 |
| 1 | 10u | C_0603_1608Metric | C3 |
| 1 | 100U 1u | C_0402_1005Metric | C4 |
| 2 | 22P 100n | C_0402_1005Metric | C5, C7 |
| 9 | 100N 100n | C_0402_1005Metric | C6, C8, C12, C13, C24, C25, C26, C27 +1 |
| 1 | 10U 100n | C_0402_1005Metric | C9 |
| 65 | 100n | C_0402_1005Metric | C10, C28, C31, C32, C33, C101, C102, C103 +57 |
| 6 | 100N 1u | C_0402_1005Metric | C11, C14, C17, C18, C23, C30 |
| 2 | 100N 22p | C_0402_1005Metric | C15, C16 |
| 1 | 10U 22p | C_0402_1005Metric | C20 |
| 1 | 22p | C_0402_1005Metric | C21 |
| 1 | 100N 10u | C_0603_1608Metric | C22 |
| 3 | 100U 100n | C_0402_1005Metric | C39, C40, C41 |
| 12 | 5K1 | R_0402_1005Metric | R1, R2, R3, R5, R10, R15, R16, R17 +4 |
| 5 | 5K1 | R_0402_1005Metric | R4, R11, R19, R25, R28 |
| 2 | 1k | R_0402_1005Metric | R6, R18 |
| 2 | 5K1 27 | R_0402_1005Metric | R7, R13 |
| 1 | 75K 27 | R_0402_1005Metric | R8 |
| 2 | 5K1 1k | R_0402_1005Metric | R9, R12 |
| 1 | 27 | R_0402_1005Metric | R14 |
| 1 | 75K 5k1 | R_0402_1005Metric | R20 |
| 2 | 5K1 75k | R_0402_1005Metric | R21, R24 |
Chastity design files
The KiCad project lives in the brad-za/chastity repository on GitHub; these links point at the commit this page was built from.
Chastity: common questions
What microcontroller does the Chastity use?
The Chastity is built around the RP2040, from the RP2040/RP2350 family.
How big is the Chastity PCB?
The Chastity measures 138.3 × 111 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Chastity?
336 components, from 48 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Chastity design files?
From the brad-za/chastity repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Chastity design in my own project?
The repository has no license, so all rights stay with brad-za. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Chastity without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.
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