4 layers84 × 25.6 mm
Little Helper
wolkstein/minimal-esp32-ble-midi-ctrl
A simple Bluthooth Midi DAW transport control unit based on an esp32 mc
41 parts1GPL-3.0
2 layers100 × 56.8 mm
JoyKey
techy-robot/JoyKey1A small macropad that simultaneously acts as game controller and an entertainment device.
- Size
- 100 × 56.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 64
- Nets
- 55
- Pads
- 233
- Tracks, vias
- 491, 76
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 12 Feb 2025
- Updated
- 28 Nov 2025
Overview
JoyKey is an open-source printed circuit board by techy-robot, from the techy-robot/JoyKey repository on GitHub, published under the CERN-OHL-S-2.0 licence. It is a 2-layer board of 100 × 56.8 mm with 64 parts on 55 nets, routed with 491 tracks and 76 vias.
It is built around the AP2112K-3.3, LSM6DS3 and 1N4148W, with the SK6812MINI-E, DMG3415U and MBR0540 among its other parts. Its parts include 24 diodes, 14 capacitors, 7 ICs, 6 connectors and 6 switches. It belongs with the keyboards and input boards and the RP2040 boards of this library.
Main components
6
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
LSM6DS3
LGA-14(2.5x3)-40℃~+85℃ 1.71V~3.6V 8KB Accelerometer Gyroscope SPI、I2C X,Y,Z X,Y,Z ±16g ±2000dps LGA-14(2.5x3) Accelerometers ROHSSTMicroelectronicsAccelerometers
1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching Diodes
SK6812MINI-E
SMD-40℃~+85℃ 0.6mA 1.78mm 120mcd~240mcd 120° 160mcd~320mcd 1kHz 2.8mm 2000V 3.2mm 3.7V~5.5V 460nm~470nm 515nm~525nm 620nm~625nm 800Kbit/s 815mcd~1275mcd Semi-transparent lens SMD RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
DMG3415U
SOT-23MOSFETsTECH PUBLICMBR0540
SOD-123-55℃~+150℃ 1 Independent 20uA@40V 40V 5.5A 500mA 510mV@500mA SOD-123 Schottky Diodes ROHSonsemiSchottky Diodes
README
README.mdmodified: 2025-02-20T21:09:22-07:00
JoyKey
This is a small macropad that simultaneously acts as game controller and an entertainment device.
The name is inspired by the Nintendo JoyCon portmanteau (Joystick Controller) except I have replaced the 2nd word with "Keypad" (Joystick Keypad). See name ideas for other things I came up with.
My main repo were development will continue: https://github.com/techy-robot/JoyKey
Features
- Customizable macro pad using QMK firmware
- Game controller mimicking a joy-con
- Offline games that can be played on the display with no connections
- Small handheld size
- Linear keys
Approoved Parts BOM
- 8 Cherry mx Red keys with clear shell variant
- 8 Black keycaps
- 128x64 px SSD1306-based monochrome display near the top
- SEEED Xiao RP2040 (can be replaced later w/ SEEED xiao MG24 or nRF52840 Sense for BLE and other goodies)
- 12 Sk6812 Mini-E reverse mount RGB leds
- 3 M3x16 screws and M3 heatsets
Extra Parts BOM
- 1 Analog PS2 Joystick (I already have)
- 1 Alps SRBE110301. (flat volume dial on the side). LCSC #C160861
- AP2112K-3.3 Linear Regulator. LCSC #C51118
- MCP73831T-2ACI/OT Lipo Battery Charger. LCSC #C424093
- 4 10uf 0805 capacitors. LCSC #C15850
- DMG3415 Sot23-3 PMOS. LCSC #C7202986
- 3 10k 0805 resistors. LCSC #C17414
- 1 2k 0805 resistor. LCSC #C17604
- 1 0603 LED. LCSC #C2286
- 1 LSM6DS3 LCSC #C967633
- JST PH S2B smd LCSC #C295747
- 12 1N4148W diodes LCSC #C2128
- 1 MBR0540 schotkey LCSC #C78545
Pictures
Case
PCB
Bottom
Top
Schematic
Sprite Credit
All icons that are converted using qmk's command line tool were originally from Nikoichu's 1-bit Pixel Icons set, which is licensed CC0 1.0
Parts
64| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 10uF | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14 |
| 12 | 1N4148W | Diode_SMD:Nexperia_CFP3_SOD-123W | D1, D2, D3, D4, D9, D11, D12, D14, D15, D16, D17, D22 |
| 10 | SK6812MINI | SK6812MINI-E:SK6812MINI-E | D5, D6, D7, D8, D10, D13, D18, D19, D21, D23 |
| 6 | SW_Push_45deg | MX_Solderable:MX-Solderable-1U | SW2, SW3, SW4, SW5, SW6, SW7 |
| 3 | 10k | Resistor_SMD:R_0805_2012Metric | R1, R3, R4 |
| 2 | Alps SRBE110301 | custom_Interface_HID:Alps SRBE110301 | U2, U6 |
| 2 | MountingHole | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2 |
| 1 | 2_axis_analog_joystick_button | custom_Interface_HID:Adafruit 2-Axis joystick | U5 |
| 1 | 2k | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | Conn_01x03_Socket | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | DMG3415 | Package_TO_SOT_SMD:SOT-23-3 | Q1 |
| 1 | JST PH | Connector_JST:JST_PH_S2B-PH-SM4-TB_1x02-1MP_P2.00mm_Horizontal | J4 |
| 1 | LED Orange | LED_SMD:LED_0603_1608Metric | D20 |
| 1 | LSM6DS3 | custom_Interface_HID:LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y_COSTSAVERPADs | U4 |
| 1 | MBR0540 | Diode_SMD:Nexperia_CFP3_SOD-123W | D24 |
| 1 | MCP73831-2-OT | Package_TO_SOT_SMD:SOT-23-5 | U8 |
| 1 | OLED_DISPLAY | SSD1306:SSD1306-OLED096-128x64 | J1 |
| 1 | Testpad wire hole1 | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J3 |
| 1 | Top Trigger 1 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | Top Trigger 2 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J6 |
| 1 | XIAO-RP2040-DIP | SEEED_XIAO:XIAO-RP2040-DIP | U3 |
Questions
How big is the JoyKey PCB?
It measures 100 × 56.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the JoyKey use?
64 parts, built around the AP2112K-3.3, LSM6DS3, 1N4148W and SK6812MINI-E. 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 JoyKey KiCad files?
From the techy-robot/JoyKey repository on GitHub, at the commit this page was made from: the board is PCBs/JoyKey/JoyKey.kicad_pcb and its schematic PCBs/JoyKey/Analog Input.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the JoyKey design in my own project?
Its repository publishes it under the CERN-OHL-S-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).
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