2 layers116.8 × 30 mm
Type d
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
14 parts3kApache-2.0
2 layers85 × 56 mm
Hydropad
hatya-mouse/hydropadHydroPad is a macropad with some holes for the water to go through, designed for people with palmar hyperhidrosis.
- Size
- 85 × 56 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 14
- Nets
- 20
- Pads
- 62
- Tracks, vias
- 93, 0
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 4 Jun 2026
- Updated
- 16 Aug 2026
Overview
Hydropad is an open-source printed circuit board by hatya-mouse, from the hatya-mouse/hydropad repository on GitHub. It is a 2-layer board of 85 × 56 mm with 14 parts on 20 nets, routed with 93 tracks and 0 vias.
Its parts include 6 diodes, 6 switches and 1 IC.
README
README.mdHydroPad
HydroPad is a macropad with some holes for the water to go through, designed for people with palmar hyperhidrosis.
Gallery
Screenshot of the assembled model
Schematic of HydroPad
PCB layout of HydroPad
Top plate design
Bottom case design
Required Components
-
1x PCB
-
1x Top Plate
-
1x Bottom Case
-
1x Seeed XIAO RP2040
-
6x through-hole 1N4148 Diodes
-
5x MX-Style switches
-
1x EC11 Rotary encoders
-
1x 0.91 inch OLED display
-
5x blank DSA keycaps
-
4x M3x5mx4mm heatset inserts (I'll use my own screws instead of M3x16mm screws included in the kit)
Parts
14| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6 |
| 5 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | DISPLAY |
| 1 | MODULE-SEEEDUINO-XIAO | HackPad:XIAO-Generic-Hybrid-14P-2.54-21X17.8MM | U1 |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW6 |
Questions
How big is the Hydropad PCB?
It measures 85 × 56 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hydropad use?
14 parts. 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 Hydropad KiCad files?
From the hatya-mouse/hydropad repository on GitHub, at the commit this page was made from: the board is PCB/hydropad.kicad_pcb and its schematic PCB/hydropad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hydropad design in my own project?
Its repository states no licence, so its author keeps all rights: ask hatya-mouse before reusing the design.
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