2 layers73 × 139 mm
OpenRPNCalc
apoluekt/OpenRPNCalc
Open-source and open-hardware scientific RPN calculator
141 parts414CERN-OHL-P-2.0
2 layers125 × 67 mm
Choco
hsgw/choco147x4 ortholinear onehanded keyboard/macropad.
- Size
- 125 × 67 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 54
- Nets
- 42
- Pads
- 284
- Tracks, vias
- 371, 45
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 20 May 2019
- Updated
- 20 May 2019
Overview
Choco is an open-source printed circuit board by hsgw, from the hsgw/choco repository on GitHub, published under the MIT licence. It is a 2-layer board of 125 × 67 mm with 54 parts on 42 nets, routed with 371 tracks and 45 vias.
It is built around the TLV73333PDBVR-HXY and USBLC6-2SC6. Its parts include 7 capacitors, 6 resistors, 3 ICs, 2 connectors and 1 switch. It belongs with the keyboards and input boards and the STM32 boards of this library.
Main components
2
TLV73333PDBVR-HXY
SOT-23-5L-40℃~+85℃ 10uA 110mV@(100mA) 3.3V 300mA 6.5V 75dB@(100Hz) Enable Fixed SOT-23-5L Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSHXY MOSFETVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
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)
README
README.mdCHOCO
7x4 ortholinear onehanded keyboard/macropad.
- kailh choc switch (pg1350)
- USB type-c
- STM32F072C8T6
- QMK Firmware - https://github.com/hsgw/qmk_firmware/tree/choco
BUILD
Cut mounting leg (SW_CHOC6)
How to enter bootloader
- Push and hold reset switch
- Push and hold boot switch (SW_CHOC7 / right upper corner switch)
- Release reset switch
- Release boot switch
Firmware
QMK Firmware - https://github.com/hsgw/qmk_firmware/tree/choco
License
MIT license
(c)2019 Takuya Urakawa, Dm9Records
Parts
54| Qty | Value | Footprint | References |
|---|---|---|---|
| 28 | SW_Push | SMKJP:SW_kailh_pg1350_1u | SW_CHOC1, SW_CHOC2, SW_CHOC10, SW_CHOC11, SW_CHOC12, SW_CHOC13, SW_CHOC14, SW_CHOC15, SW_CHOC16, SW_CHOC17, SW_CHOC18, SW_CHOC19, SW_CHOC20, SW_CHOC21, SW_CHOC22, SW_CHOC23 +12 |
| 5 | 0.1u | dm9_rc:C1608_Hand | C3, C4, C5, C6, C7 |
| 2 | 10k | dm9_rc:R1608_Hand | R3, R4 |
| 2 | 1u | dm9_rc:C1608_Hand | C1, C2 |
| 2 | 5.1k | dm9_rc:R1608_Hand | R5, R6 |
| 2 | I2C | dm9_rc:R1608_Hand | R1, R2 |
| 1 | 100mA | dm9_rc:C2012_hand | F1 |
| 1 | Conn_01x04 | Socket_Strips:Socket_Strip_Straight_1x04_Pitch2.54mm | J1 |
| 1 | LOGO | dm9_silks:logo_hsgw_7_5mm | G*** |
| 1 | LOGO | dm9_silks:logo_dm9_7_5mm | G*** |
| 1 | STM32F072C8Tx | Housings_QFP:LQFP-48_7x7mm_Pitch0.5mm | U2 |
| 1 | SW_Push | dm9_switches:TACT_5.1x5.1 | SW1 |
| 1 | TLV73333PDBVR | dm9_smd_ic:SOT-23-5 | U1 |
| 1 | USBLC6-2SC6 | dm9_smd_ic:SOT-23-6 | U3 |
| 1 | USB_C_12pin_Receptacle | Type-C:HRO-TYPE-C-31-M-12-Assembly | J2 |
The 50 most common of 54 parts.
Questions
How big is the Choco PCB?
It measures 125 × 67 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Choco use?
54 parts, built around the TLV73333PDBVR-HXY and USBLC6-2SC6. 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 Choco KiCad files?
From the hsgw/choco repository on GitHub, at the commit this page was made from: the board is pcb/choco.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Choco design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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