2 layers40 × 57 mm
2 layers119.5 × 161 mm
Touch pads
luney112/touch-controller-v21Custom chunithm controller
- Size
- 119.5 × 161 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 53
- Nets
- 37
- Pads
- 173
- Tracks, vias
- 351, 48
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 5 Dec 2024
- Updated
- 28 Jun 2025
Overview
Touch pads is an open-source printed circuit board by luney112, from the luney112/touch-controller-v2 repository on GitHub. It is a 2-layer board of 119.5 × 161 mm with 53 parts on 37 nets, routed with 351 tracks and 48 vias.
It is built around the CAP1188-1-CP-TR and WS2812B-4020. Its parts include 14 capacitors, 12 diodes, 8 switches, 6 connectors and 2 resistors.
Main components
2
CAP1188-1-CP-TR
QFN-24-EP(4x4)-40℃~+125℃ 3V~3.6V 50uA 600uA 8 8kV Capacitive Touch、自动灵敏度校准、接近检测、集成LED驱动器 QFN-24-EP(4x4) Touch Sensors ROHSMicrochip TechnologyTouch Sensors
WS2812B-4020
SMD,4x2mm-20℃~+70℃ 0.6mA 1.7mm 2mm 3.7V~5.3V 3.98mm 800Kbit/s B:465nm~475nm、R:620nm~625nm、G:515nm~525nm Built-in power-on reset circuit、Built-in power-on reset circuit、Integrated intelligent reverse connection protection function G:600mcd~1000mcd、B:200mcd~300mcd、R:300mcd~500mcd SMD,4x2mm RGB LEDs(Built-in IC) ROHSWorldsemiRGB LEDs(Built-In IC)
README
README.mdtouch-controller-v2
Version 2 of my touch controller for chunithm.
TODO
- Finish firmware
- Test fully
- Write out docs and assembly instructions
Parts
53| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 0.1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14 |
| 12 | WS2812B-4020 | WS2812B-4020:LED_WS2812B-4020 | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12 |
| 8 | Conn_01x01 | TouchKey:TouchKey_Standard | K1, K2, K3, K4, K5, K6, K7, K8 |
| 4 | Conn_01x06_Socket | Connector_JST:JST_GH_SM06B-GHS-TB_1x06-1MP_P1.25mm_Horizontal | J2, J3, J5, J6 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 4 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP2, JP3, JP4 |
| 2 | Conn_01x03_Socket | Connector_JST:JST_PH_S3B-PH-SM4-TB_1x03-1MP_P2.00mm_Horizontal | J1, J4 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2 |
| 1 | 150k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2 |
| 1 | CAP1188-1-CP-TR | CAP1188_1_CP_TR:QFN24_4X4MC_MCH | U1 |
| 1 | LOGO | Logo:Snep_Copper | G*** |
| 1 | ~ | VL53L5CX_Breakout:VL53L5CX_Breakout_Aliexpress | B1 |
Questions
How big is the Touch pads PCB?
It measures 119.5 × 161 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Touch pads use?
53 parts, built around the CAP1188-1-CP-TR and WS2812B-4020. 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 Touch pads KiCad files?
From the luney112/touch-controller-v2 repository on GitHub, at the commit this page was made from: the board is kicad/touch-pads/touch-pads.kicad_pcb and its schematic kicad/mainboard/mainboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Touch pads design in my own project?
Its repository states no licence, so its author keeps all rights: ask luney112 before reusing the design.
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