2 layers40.6 × 20.1 mm
2 layers227.3 × 84.9 mm
Kicad chiffchaff
kilipan/chiffchaff3- Size
- 227.3 × 84.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 104
- Nets
- 63
- Pads
- 400
- Tracks, vias
- 485, 50
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 7 Sep 2024
- Updated
- 2 Oct 2024
Overview
Kicad chiffchaff is an open-source printed circuit board by kilipan, from the kilipan/chiffchaff repository on GitHub, published under the CERN-OHL-S-2.0 licence. It is a 2-layer board of 227.3 × 84.9 mm with 104 parts on 63 nets, routed with 485 tracks and 50 vias.
It is built around the USBLC6-2SC6, 1N4148W and PMEG2010EA. Its parts include 56 switches, 34 diodes, 4 resistors, 2 capacitors and 2 ICs.
Main components
3
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching Diodes
PMEG2010EA
SOD-3231 Independent 1A 20V 50uA@15V 550mV@1A 5A SOD-323 Schottky Diodes ROHSNexperiaSchottky Diodes
README
README.md
Chiffchaff
An unholy mixture of Zilpzalp and Chiffre
Firmware
Chiffchaff uses the CH552T MCU and thus runs FAK (or your personal homebrew firmware) only. The config can be found here.
Parts
104| Qty | Value | Footprint | References |
|---|---|---|---|
| 36 | SW_Push | PCM_marbastlib-mx:SW_MX_1u | SW1, SW2, SW10, SW11, SW11c2, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW20c2, SW22 +20 |
| 32 | 1N4148W | Diode_SMD:D_SOD-123 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +16 |
| 10 | SW_Push | PCM_marbastlib-mx:SW_MX_1.5u | SW1b2, SW5b2, SW6b2, SW10b2, SW11b2, SW15b2, SW16b2, SW20b2, SW33b2, SW34b2 |
| 3 | LOGO | LOGO | boot, seth, seth |
| 2 | 100nF | Capacitor_SMD:C_0402_1005Metric | C1, C2 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R4, R5 |
| 2 | MX_stab | apfellib:STAB_MX_3.25u | S3, S7 |
| 2 | MX_stab | PCM_marbastlib-mx:STAB_MX_2.25u | S4, S6 |
| 2 | MX_stab | PCM_marbastlib-mx:STAB_MX_3u | S2, S5 |
| 2 | SW_Push | PCM_marbastlib-mx:SW_MX_1.25u | SW32, SW35 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | 500mA | Fuse:Fuse_0402_1005Metric | F1 |
| 1 | BOOT | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW37 |
| 1 | PMEG2010EA | Diode_SMD:D_0402_1005Metric | D37 |
| 1 | PWR LED | LED_SMD:LED_0402_1005Metric | D36 |
| 1 | RESET | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW38 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | USB_C_Receptacle | PCM_marbastlib-various:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | power led on/off | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP2 |
| 1 | ~ | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U1 |
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Questions
How big is the Kicad chiffchaff PCB?
It measures 227.3 × 84.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Kicad chiffchaff use?
104 parts, built around the USBLC6-2SC6, 1N4148W and PMEG2010EA. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Kicad chiffchaff KiCad files?
From the kilipan/chiffchaff repository on GitHub, at the commit this page was made from: the board is kicad_chiffchaff.kicad_pcb and its schematic key_matrix.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Kicad chiffchaff design in my own project?
Its repository publishes it under the CERN-OHL-S-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).