Keytartouch
About the Keytartouch PCB
Keytartouch is an open source RISC-V PCB design by cnlohr, published on GitHub under the MIT license. It is a 2-layer board measuring 152.5 × 117.5 mm, with 69 components from 6 distinct parts.
Its main chip is the CH32V003F4U6, from the RISC-V family. By type, the board carries 40 diodes, 23 capacitors, 3 ICs and 3 connectors.
From the project
My dumping grounds for all my kicad projects and random hardware bringup.
NOTE FOR PULL REQUESTS: I DO NOT ACCEPT MASS ADDS. If you have 5-6 really awesome parts, I'll accept a pull request, but if you have say 10+ parts, I will not. Select only the neatest. Also, make sure JLCPCB offers the parts, if they're intended for board mounting!
Discussion of ferrite cores and what their recommended power is Another doc like the above, but with different info Discussion of building ferrite cores Breakdown voltages of enameld copper wire * Enameld wire datasheet
Main components on the Keytartouch
Keytartouch bill of materials (BOM)
69 components, 6 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | CH32V003F4U6 | QFN-20-1EP_3x3mm_P0.4mm_EP1.65x1.65mm | U1, U2, U3 |
| 1 | CC | PinHeader_2x03_P2.54mm_Vertical_SMD | J2 |
| 1 | CB | PinHeader_2x03_P2.54mm_Vertical_SMD | J3 |
| 1 | CA | PinHeader_2x03_P2.54mm_Vertical_SMD | J4 |
| 40 | ~ | SK6805SIDE-FRGBW-BW-P6 | D1, D2, D3, D4, D5, D6, D7, D8 +32 |
| 23 | .1u | C_0402_1005Metric | C1, C2, C3, C4, C5, C6, C7, C8 +15 |
Keytartouch design files
The KiCad project lives in the cnlohr/cnhardware repository on GitHub; these links point at the commit this page was built from.
Keytartouch: common questions
What microcontroller does the Keytartouch use?
The Keytartouch is built around the CH32V003F4U6, from the RISC-V family.
How big is the Keytartouch PCB?
The Keytartouch measures 152.5 × 117.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Keytartouch?
69 components, from 6 distinct parts. The full bill of materials is listed on this page.
Where can I download the Keytartouch design files?
From the cnlohr/cnhardware repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Keytartouch design in my own project?
Yes, under the terms of its MIT license, which cnlohr chose for the repository.
Can I test firmware for the Keytartouch without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RISC-V firmware against it before you order a PCB.
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