2 layers57 × 55.2 mm
LogicAnalyzer
gusmanb/logicanalyzer
24 channel, 100Msps logic analyzer hardware and software
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2 layers36.6 × 35.1 mm
MDD ESP32
anseljh/MDDTiny smart device to deter rodents with an ultraviolet LED that turns on at night
- Size
- 36.6 × 35.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 10
- Nets
- 16
- Pads
- 44
- Tracks, vias
- 13, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 1 Sep 2025
- Updated
- 14 Sep 2025
Overview
MDD ESP32 is an open-source printed circuit board by anseljh, from the anseljh/MDD repository on GitHub. It is a 2-layer board of 36.6 × 35.1 mm with 10 parts on 16 nets, routed with 13 tracks and 0 vias.
Its parts include 3 connectors, 1 resistor and 1 IC. It belongs with the ESP32 and RISC-V boards of this library.
README
README.mdMouse Deterrent Device
A mouse decided it liked the space under the hood of my car. Supposedly, they don't like ultraviolet light, so I designed a small device that could go in there to deter critters from settling in at night.
What it does
- Connects to home wifi
- Gets the current time via NTP
- Gets sunrise and sunset times from the SunriseSunset.io API
- If it's daytime, goes into battery-saving deep sleep until sunset
- If it's night, light the UV LED, and go into a lighter sleep mode until sunrise to save some battery
Hardware
- Seeed Studio XIAO ESP32-C6
- A battery (soldered to pads on Xiao) or USB battery pack
- Ultraviolet LED (like this one)
- Resistor appropriate for your UV LED (4.7 Ω for the one linked above)
Circuit schematics and PCB
PCB design files for KiCad are in PCB folder.
(This render shows a slightly different Xiao board, not the ESP32-C6 version.)
Mouse image by Kim Sun Young from Noun Project (CC BY 3.0).
Software
- CircuitPython
- Powered by SunriseSunset.io's sunrise/sunset API.
Parts
10| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | Screw_Terminal_01x02 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-2-2.54_1x02_P2.54mm_Horizontal | J1, J3 |
| 1 | 4.7 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1 |
| 1 | Conn_01x02 | Connector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J2 |
| 1 | LOGO | LOGO | G*** |
| 1 | XIAO-ESP32-C6 | Seeed Studio XIAO Series Library:XIAO-ESP32C6-DIP | U1 |
The 6 most common of 10 parts.
Questions
How big is the MDD ESP32 PCB?
It measures 36.6 × 35.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MDD ESP32 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 MDD ESP32 KiCad files?
From the anseljh/MDD repository on GitHub, at the commit this page was made from: the board is PCB/MDD_ESP32.kicad_pcb and its schematic PCB/MDD_ESP32.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MDD ESP32 design in my own project?
Its repository states no licence, so its author keeps all rights: ask anseljh before reusing the design.
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