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Capstone Keyboard Design

livid05·ProofOfConcept·schematics/capstone_keyboard_design/Capstone Keyboard Design.kicad_pcb

Capstone Keyboard Design PCB layout, top view — open source STM32 board by livid05

About the Capstone Keyboard Design PCB

Capstone Keyboard Design is an open source STM32 PCB design by livid05, published on GitHub. It is a 4-layer board measuring 25.8 × 72.1 mm, with 31 components from 19 distinct parts.

Its main chip is the STM32U595RITX, from the STM32 family. Other key parts include the AMS1117-3.3, USBLC6-2SC6 and W25Q128JVS. By type, the board carries 11 capacitors, 8 resistors, 4 ICs, 3 connectors, 2 switches and 1 crystal.

It belongs with the keyboards, iot & wireless and dev boards & breakouts designs in this gallery.

From the project

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A custom 4×4 keypad with rotary encoder and per-key RGB, built on an RP2040, that transmits keystrokes wirelessly to a PC via either BLE (Bluetooth Low Energy) or a 2.4 GHz proprietary radio link using a Nordic nRF52840 bridge board.

Hardware path: RP2040 keypad → UART (GP0) → TENSTAR nRF52840 → BLE or 2.4 GHz → PC

1. Project Overview 2. Hardware 3. Repository Structure 4. System Architecture 5. Wireless Protocol 6. QMK Firmware (RP2040) 7. BLE Bridge (blebridge) 8. 2.4 GHz ESB Bridge + Dongle (esbbridge / esb_dongle) 9. Keymap & Layers 10. RGB Matrix 11. Rotary Encoder 12. HC4067 Analog…

Main components on the Capstone Keyboard Design

STM32U595RITXAMS1117-3.3USBLC6-2SC6W25Q128JVS

Capstone Keyboard Design bill of materials (BOM)

31 components, 19 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32U595RITX
STM32U595RITx
U1
1
AMS1117-3.3
U2
1
USBLC6-2SC6
U3
1
W25Q128JVS
U4
1
12-25MHZ
12-25MHz
Y2
1
USB_C_RECEPTACLE_USB2.0_16P
USB_C_Receptacle_USB2.0_16P
J1
2
CONN_01X26_PIN
Conn_01x26_Pin
J2, J3
1
Polyfuse_Small
F1
2
SW_Push
SW1, SW2
1
LED_RED
D1
2
10UF
10uF
C1, C2
1
2.2UF
2.2uF
C3
5
100NF
100nF
C4, C7, C8, C9, C10
2
12PF
12pF
C5, C6
1
100NF
100nF
C21
2
5.1K
5.1k
R1, R2
2
27.4
R3, R9
3
10K
10k
R5, R6, R7
1
1k
R8

Capstone Keyboard Design design files

The KiCad project lives in the livid05/ProofOfConcept repository on GitHub; these links point at the commit this page was built from.

Capstone Keyboard Design: common questions

What microcontroller does the Capstone Keyboard Design use?

The Capstone Keyboard Design is built around the STM32U595RITX, from the STM32 family.

How big is the Capstone Keyboard Design PCB?

The Capstone Keyboard Design measures 25.8 × 72.1 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Capstone Keyboard Design?

31 components, from 19 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 Capstone Keyboard Design design files?

From the livid05/ProofOfConcept 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 Capstone Keyboard Design design in my own project?

The repository has no license, so all rights stay with livid05. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Capstone Keyboard Design without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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