2 layers57 × 55.2 mm
LogicAnalyzer
gusmanb/logicanalyzer
24 channel, 100Msps logic analyzer hardware and software
10 parts5.1kGPL-3.0
2 layers16.5 × 16.5 mm
Mouse encoder pcb
christrotter/mouse-encoder-pcb1Simple standalone mouse-wheel encoder pcb.
- Size
- 16.5 × 16.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 10
- Nets
- 14
- Pads
- 31
- Tracks, vias
- 40, 12
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 29 Jun 2025
- Updated
- 19 Apr 2026
Overview
Mouse encoder pcb is an open-source printed circuit board by christrotter, from the christrotter/mouse-encoder-pcb repository on GitHub, published under the MIT licence. It is a 2-layer board of 16.5 × 16.5 mm with 10 parts on 14 nets, routed with 40 tracks and 12 vias.
Its parts include 4 resistors, 2 capacitors, 1 connector and 1 switch.
README
README.mdmouse-encoder-pcb
Update, 2026/04/19: PCB works perfectly, noise circuit excellent.
Simple standalone mouse-wheel encoder pcb, including a noise filter, but incredibly, no LED. Designed to be VIK-friendly, and fits ALPS and TTC (and Kailh) encoders (e.g. ALPS EC10E1260502).
Noise filter
I'd initially struggled with the noise filter on the Ultrafalcon - still getting skipped readings, doubles - but some reading indicated that I needed to change up the resistor values to meet 3.3v spec. This is the same Bourns-recommended pattern.
Turns out there are three camps in the noise filter arena...
- Only do it in software.
- Only do it in hardware.
- Mix of both. ... and if you are in one camp you're 'wrong' to the others. Anyways, let's give this a shot.
In use
Note the direction of the modeled FFC cable here...
PCB render
Usage example
PCB overview
Parts
10| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 0.01uF | Capacitor_SMD:C_0402_1005Metric | C1, C2 |
| 2 | 10k | Resistor_SMD:R_0402_1005Metric | R3, R4 |
| 2 | 330 | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 1 | **REF | MyKicadFootprints:awesome-logo | LOGO1 |
| 1 | **REF | Vik:vik-logo-small | LOGO2 |
| 1 | RotaryEncoder | MyKicadFootprints:SW-TH_EC10EXXXXXXX | SW1 |
| 1 | vik-module-connector | MyKicadFootprints:FFC-SMD_FFC05001-12SBA124W5M | J1 |
Questions
How big is the Mouse encoder pcb PCB?
It measures 16.5 × 16.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Mouse encoder pcb use?
10 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 Mouse encoder pcb KiCad files?
From the christrotter/mouse-encoder-pcb repository on GitHub, at the commit this page was made from: the board is mouse-encoder-pcb.kicad_pcb and its schematic mouse-encoder-pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mouse encoder pcb design in my own project?
Its repository publishes it under the MIT 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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