4 layers80 × 100 mm
4 layers15 × 16.3 mm
- Size
- 15 × 16.3 mm
- Copper layers
- 4
- Thickness
- 0.8 mm
- Parts
- 38
- Nets
- 36
- Pads
- 126
- Tracks, vias
- 309, 49
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 23 Aug 2021
- Updated
- 7 Sep 2026
Overview
COM MOD is an open-source printed circuit board by Aightech, from the Aightech/CleverHand-hardware repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 15 × 16.3 mm with 38 parts on 36 nets, routed with 309 tracks and 49 vias.
It is built around the 74HC688D, FPC-05F-18PH20 and WS2812C, with the TS-1088R-02026 among its other parts. Its parts include 26 connectors, 2 ICs, 2 diodes, 1 capacitor and 1 resistor.
Main components
4
74HC688D
SOIC-20-300mil-40℃~+125℃ 0.1V 0.5V、1.35V、1.8V 1.2V、2.4V、3.2V 1.9V、4.4V、5.9V 160uA 16ns@6.0V,50pF 2V~5V SOIC-20-300mil Digital Comparators ROHSNexperiaDigital Comparators
FPC-05F-18PH20
SMD,P=0.5mm,卧贴-25℃~+85℃ 0.3mm 0.5mm 18P 2mm 500mA 50V Bottom Contact Hinged Lid Phosphor bronze Surface Mount, Right Angle Tin SMD,P=0.5mm,卧贴 FFC, FPC (Flat Flexible) Connector Assemblies ROHSXUNPUFFC, FPC (Flat Flexible) Connector Assemblies
WS2812C
SMD5050-4P-25℃~+65℃ 0.6mA 1.57mm 3.7V~5.3V 5.4mm 5mm 800Kbit/s B:465nm~475nm、R:620nm~630nm、G:515nm~525nm Built-in power-on reset circuit、Built-in power-on reset circuit、Built-in one-way transmission function G:400mcd~600mcd、R:150mcd~200mcd、B:100mcd~150mcd SMD5050-4P RGB LEDs(Built-in IC) ROHSWorldsemiRGB LEDs(Built-In IC)
TS-1088R-02026
SMD,4x3mm100,000 cycles 12V 2.6N 2.93mm 2mm 3.9mm 50mA Black Round Button SMD(SMT) Tab SPST Surface Mount,Vertical Without Bracket SMD,4x3mm Tactile Switches ROHSXUNPUTactile Switches
README
pcb/hmi/interface/DRY_ELEC_6CH_MID/README.mdDry Electrodes Module
This module is responsible for interfacing the sensors/actuators inputs/outputs with the user skin or with other modules.
Electrical Schematic
PCB Layout
| top view | side view |
|---|---|
 |  |
3D Model
Parts
38| Qty | Value | Footprint | References |
|---|---|---|---|
| 23 | Conn_01x01_Pin | Connector_PinHeader_1.27mm:PinHeader_1x01_P1.27mm_Vertical | J1, J2, J10, J11, J12, J13, J14, J15, J16, J17, J18, J19, J20, J21, J22, J23 +7 |
| 3 | Conn_01x01_Pin | Connector_PinSocket_2.54mm:PinSocket_1x01_P2.54mm_Vertical | J24, J25, J26 |
| 2 | FPC-05F-18PH20 | 00_lcsc:FPC-SMD_18P-P0.50_FPC-05F-18PH20 | FPC1, FPC2 |
| 2 | WS2812C | 00_lcsc:LED-SMD_4P-L2.0-W2.0-TL_WS2812B-2020 | LED1, LED2 |
| 1 | 10K | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C1 |
| 1 | 74HC688 | digikey-footprints:TSSOP-20_W4.4mm | U2 |
| 1 | G*** | kibuzzard-658C2757 | kibuzzard-658C2757 |
| 1 | G*** | kibuzzard-658C3FF8 | kibuzzard-658C3FF8 |
| 1 | HC32L110C6UA | 00_Custom:QFN-20-1EP_3x3mm_P0.4mm_EP1.4x1.4mm | U1 |
| 1 | TS-1088R-02026 | 00_lcsc:SW-SMD_L3.9-W3.0-P4.45 | SW1 |
| 1 | smd_insert | 00_Custom:insert_1.2mm | I1 |
Questions
How big is the COM MOD PCB?
It measures 15 × 16.3 mm and has 4 copper layers, 0.8 mm thick.
What parts does the COM MOD use?
38 parts, built around the 74HC688D, FPC-05F-18PH20, WS2812C and TS-1088R-02026. 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 COM MOD KiCad files?
From the Aightech/CleverHand-hardware repository on GitHub, at the commit this page was made from: the board is pcb/hmi/communication/COM_MOD/COM_MOD.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the COM MOD design in my own project?
Its repository publishes it under the GPL-3.0 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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