2 layers299 × 82.5 mm
PixelWave
hackclub/OnBoard
💡 Join 1,000 teenagers and make your first PCB with a $100 grant!
663 parts915
2 layers268.9 × 123.7 mm
Keyboard
nnandrew/heartbreak440 Key Ergonomic Split Keyboard with Encoders, LCDs, and Underglow.
- Size
- 268.9 × 123.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 189
- Nets
- 132
- Pads
- 838
- Tracks, vias
- 1,620, 298
- Pours
- 654
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 6 Sep 2022
- Updated
- 7 May 2024
Overview
Keyboard is an open-source printed circuit board by nnandrew, from the nnandrew/heartbreak repository on GitHub. It is a 2-layer board of 268.9 × 123.7 mm with 189 parts on 132 nets, routed with 1,620 tracks and 298 vias.
It is built around the 74AUP2G14DW and SK6812. Its parts include 68 diodes, 46 switches, 30 capacitors, 12 resistors and 4 ICs. It belongs with the keyboards and input boards and the nRF52 and nRF5x boards of this library.
Main components
2
74AUP2G14DW
SOT-363-40℃~+125℃ 100mV~880mV 2 2 2.55V 450mV 4mA 4mA 5.4ns@3.3V,30pF 500nA 600mV~2.29V 74AUP 800mV~3.6V Schmitt trigger SOT-363 Inverters ROHSDiodes IncorporatedInverters
SK6812
SMD-4P,5.4x5mm-40℃~+85℃ 0.6mA 1.6mm 120° 160mcd~320mcd 1kHz 2000V 280mcd~515mcd 3.7V~5.5V 460nm~470nm 520nm~530nm 620nm~625nm 800Kbit/s 815mcd~1275mcd Built-in power-on reset circuit Semi-transparent lens SMD-4P,5.4x5mm RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
README
README.mdheartbreak
a 40 Key Wireless BLE Split Keyboard with Encoders, LCDs, Haptic Feedback, Fingerprint Reading, Underglow, and a corny theme.
Parts
Required
| Name | Count | Notes |
|---|---|---|
| PCB | 2 | Reversible |
| PCB Coin | 1-2 | fills case hole with a <3 |
| Top Shell | 2 | 3D printed or machined integrated plate |
| Bottom Shell | 2 | Transparent resin print |
| Magnets | 48 | 3x1mm to hold the case together |
| nice!nano v2.0 | 2 | ZMK BLE |
| MCU Sockets | 50-70 | 0627-0-15-15-21-27-10-0 |
| MCU Pins | 50-70 | 3320-0-00-15-00-00-03-0 |
| Reset Switch | 2 | B3U-3000P-B |
| Power Switch | 2 | PCM12 |
| Battery | 2 | 301230 size |
| Diodes | 42 | SOD-123 SMD |
| Switch Sockets | 40 | Kailh sockets |
| Key Switches | 40 | Only compatible with MX style |
| Keycaps | 40 | All 1u |
| USB C cable | 1 | Data lines required for flashing |
Optional
| Name | Count | Remarks |
|---|---|---|
| Rubber feet | 8 | reduce sliding |
| nice!view LCD | 2 | low power draw |
| Pimoroni Haptic Buzz | 1 | requires custom firmware |
| Waveshare UART Fingerprint Sensor | 1 | requires custom firmware |
| EC11 Rotary Encoder | 2 | using hardware debouncing |
| 17mm Encoder Knob | 2 | a tight fit |
| Schmitt Trigger | 2 | 74AUP2G14 |
| 10kOhm Resistors | 8 | encoder debounce |
| 0.1uC Capacitors | 4 | for leds and debounce |
| WS2812B | 9 | LEDs for Undergrow |
| SK6812-SIDE | 4 | LEDs for Undergrow |
| P-Channel MOSFET | 2 | SOT-23 to shutoff LEDs |
| 200Ohm Resistors | 2 | current limit for mosfet |
| 200kOhm Resistors | 2 | pulldown for mosfet |
| 0.1uC Capacitors | 26 | for leds and debounce |
Parts
189| Qty | Value | Footprint | References |
|---|---|---|---|
| 42 | hb44:SMD_SOD123 | D1, D10, D10_R1, D11, D11_R1, D12, D12_R1, D13, D13_R1, D14, D14_R1, D15, D15_R1, D16, D16_R1, D17 +26 | |
| 40 | MX | hb44:SMD_CherryMX_MidHeight_HotSwap | SW1, SW10, SW10_R1, SW11, SW11_R1, SW12, SW12_R1, SW13, SW13_R1, SW14, SW14_R1, SW15, SW15_R1, SW17, SW17_R1, SW18 +24 |
| 30 | 0.1u | hb44:SMD_Cap_0603 | C1, C1_R1, C2, C2_R1, C10, C10_R1, C11, C11_R1, C12, C12_R1, C13, C13_R1, C14, C14_R1, C15, C15_R1 +14 |
| 18 | SK6812 | hb44:WS2812B_data-bridgeable | LED1, LED2, LED3, LED4, LED5, LED5_R1, LED6, LED6_R1, LED7, LED7_R1, LED8, LED8_R1, LED10_R1, LED11_R1, LED12_R1, LED13_R1 +2 |
| 16 | MountingHole | hb44:MountingHole_4mm | H1, H1_R1, H2, H2_R1, H3, H3_R1, H4, H4_R1, H5, H5_R1, H6, H6_R1, H7, H7_R1, H8, H8_R1 |
| 8 | 10k | hb44:SMD_Res_1206 | R1, R1_R1, R2, R2_R1, R3, R3_R1, R4, R4_R1 |
| 8 | SK6812 | hb44:SK6812-SIDE | LED1_R1, LED2_R1, LED3_R1, LED4_R1, LED10, LED11, LED12, LED13 |
| 3 | LOGO | hb44:heart | G***, locked, locked |
| 2 | 200 | hb44:SMD_Res_1206 | R5, R5_R1 |
| 2 | 200k | hb44:SMD_Res_1206 | R6, R6_R1 |
| 2 | 74AUP2G14 | hb44:SMD_74AUP2G14_SOT-363 | U2, U2_R1 |
| 2 | Conn_01x02 | hb44:TH_BatteryConn | J1, J1_R1 |
| 2 | Conn_01x05 | hb44:Pimoroni Haptic Buzz | J2, J2_R1 |
| 2 | LOGO | hb44:heartbreak | G***, locked |
| 2 | Q_PMOS_GSD | hb44:SMD_P_MOSFET_SOT-23 | Q1, Q1_R1 |
| 2 | RotaryEncoder_Switch | hb44:EC11 | SW16, SW16_R1 |
| 2 | SW_DPDT_x2 | hb44:SMD_SW_SPDT_PCM12 | SW22, SW22_R1 |
| 2 | SW_PUSH | hb44:SMD_SW_SPST_B3U-3000P-B | SW23, SW23_R1 |
| 2 | nice!nano | hb44:nice!nano | U1, U1_R1 |
| 2 | nice!view | hb44:nice!view | LCD1, LCD1_R1 |
Questions
How big is the Keyboard PCB?
It measures 268.9 × 123.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Keyboard use?
189 parts, built around the 74AUP2G14DW and SK6812. 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 Keyboard KiCad files?
From the nnandrew/heartbreak repository on GitHub, at the commit this page was made from: the board is PCB/keyboard.kicad_pcb and its schematic PCB/Left.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Keyboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask nnandrew before reusing the design.
Similar boards
- 4 layers95 × 95 mm
Openmicro
conol-ai/openmicrokbd
Open-source recreation of OpenAI's Codex Micro macropad — PCB written in CoHDL, an AI-native hardware description language. Rust firmware (embassy) + companion app (makepad). MIT licensed. https://openmicrokbd.org
88 parts154MIT - 2 layers312.5 × 122.3 mm
- 2 layers140.1 × 121.8 mm
- 2 layers187.9 × 127.2 mm
Dya panelized
cormoran/dya-dash-keyboard
DYA Dash portable wireless split keyboard with 25mm trackball
269 parts57CC-BY-4.0 - 2 layers145 × 145 mm
Neofighter
w4ilun/neofighter
A MIDI controller using arcade buttons with RGB lighting effects
111 parts51 - 2 layers176 × 189.6 mm
8x8
miliar/saiboard
An open-source, wooden electronic Go board that integrates with KataGo.
222 parts48GPL-3.0 - 6 layers128 × 128 mm
Emberone
256foundation/emberone00-pcb
KiCAD design files for the emberOne/00 hashboard
395 parts45CERN-OHL-S-2.0