2 layers94.9 × 76 mm
ToadsTempest
tikinson/ToadsTempest
Super small custom 42-keys column-staggered ergonomic mechanical keyboard powered by CH552T microcontroller, created for pocket keyboard design contest #00
113 parts11CC0-1.0
2 layers149.2 × 82.5 mm
0xPM
llmerlos/0xPM11PICCTRL 0xPM - 6x3+4 Split Keyboard with onboard CH552
- Size
- 149.2 × 82.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 65
- Nets
- 59
- Pads
- 625
- Tracks, vias
- 633, 165
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 25 Jan 2024
- Updated
- 17 Mar 2024
Overview
0xPM is an open-source printed circuit board by llmerlos, from the llmerlos/0xPM repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 2-layer board of 149.2 × 82.5 mm with 65 parts on 59 nets, routed with 633 tracks and 165 vias.
It is built around the CH552T, USBLC6-2SC6 and CH213K. Its parts include 22 diodes, 22 switches, 6 resistors, 4 ICs and 2 capacitors. It belongs with the keyboards and input boards and the 8051 (CH55x, STC, AT89) boards of this library.
Main components
3
CH552T
TSSOP-20-40℃~+85℃ 12Mbps 3.3V~5V USB 2.0 USB to UART、USB to SPI TSSOP-20 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
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)
CH213K
SOT-23-32.2V~5.5V 240mV 240mΩ 3.6uA Integrated FET SOT-23-3 ORing Controllers ROHSWCH (Nanjing Qinheng Microelectronics)Power Distribution Switches
README
README.mdPICCTRL - 0xPM
3x6 + 4 Split Ortholinear Keyboard with on board MCU
Characteristics:
- FAK powered
- CH552
- ESD, over-current, short-circuit, reverse polarity protection.
- Acrylic case.
- Reversible PCB
- MX and Choc V1 compatibility.
Choc V1
MX
Keymap
Nickel files available here.
Parts
65| Qty | Value | Footprint | References |
|---|---|---|---|
| 22 | D_Small_Filled | picctrl:D_0805_2012Metric_Reversible | D1, D2, D3, D10, D11, D12, D13, D14, D15, D16, D17, D18, D20, D21, D22, D23 +6 |
| 22 | SW_Push_45deg | picctrl:SW_Hotswap_Kailh_Choc_MX_1.00u | SW1, SW2, SW3, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW20, SW21, SW22, SW23 +6 |
| 3 | 5.1k | Resistor_SMD:R_0805_2012Metric | R2, R4, R5 |
| 2 | 0 | Resistor_SMD:R_0805_2012Metric | R3, R6 |
| 2 | 100nF | Capacitor_SMD:C_0805_2012Metric | C1, C2 |
| 2 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U1, U3 |
| 2 | USB_C_Receptacle_USB2.0 | picctrl:TYPE-C-31-M-14_Reversible | J1, J2 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | BOOT | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | B1 |
| 1 | CH213K | Package_TO_SOT_SMD:SOT-23-3 | U2 |
| 1 | CH552T | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U4 |
| 1 | PWR/USR LED | LED_SMD:LED_0402_1005Metric | L1 |
| 1 | RESET | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | B2 |
The 61 most common of 65 parts.
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Questions
How big is the 0xPM PCB?
It measures 149.2 × 82.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the 0xPM use?
65 parts, built around the CH552T, USBLC6-2SC6 and CH213K. 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 0xPM KiCad files?
From the llmerlos/0xPM repository on GitHub, at the commit this page was made from: the board is PCB/0xPM.kicad_pcb and its schematic PCB/0xPM.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 0xPM design in my own project?
Its repository publishes it under the CERN-OHL-P-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).