2 layers60 × 30 mm
Controller
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
11 parts3kApache-2.0
2 layers48.5 × 35.3 mm
Microphone converter
hatya-mouse/plugin-power-supplierA small device to supply 3V plugin power to microphone!
- Size
- 48.5 × 35.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 11
- Nets
- 7
- Pads
- 25
- Tracks, vias
- 23, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 6 Jun 2026
- Updated
- 6 Jun 2026
Overview
Microphone converter is an open-source printed circuit board by hatya-mouse, from the hatya-mouse/plugin-power-supplier repository on GitHub. It is a 2-layer board of 48.5 × 35.3 mm with 11 parts on 7 nets, routed with 23 tracks and 0 vias.
Its parts include 2 capacitors, 2 resistors, 2 connectors and 1 switch. It belongs with the audio and music boards of this library.
README
README.md🔋 3V Plugin Power Supplier
This is a small device to supply 3V plugin power to microphone.
🎥 Demo
You can watch the demo video on YouTube!
🔧 How to Use
Order your PCB to PCB manufacturer such as JLCPCB to get your own. Use production/gerbers.zip to order.
After you receive the PCB, solder components on it. Then you can use it by inserting a CR2032 battery and plugging it into microphone.
J1 is for audio input so it should be connected to the microphone, and J2 is for output.
⚙️ Components
This device requires following components for you to make:
| Component | Quantity |
|---|---|
| 2.2kΩ Resistor | 2 |
| 100µF Electrolytic Capasitor | 2 |
| 3.5mm TRS Jack (Be careful for pin arrangement) | 2 |
| Slide Switch | 1 |
| CR2032 Battery Holder | 1 |
| CR2032 Coin Battery | 1 |
See PCB layout in KiCad for more details.
🗺️ Schematic & Layout
Schematic
PCB Layout
🏞️ Gallery
Top
Bottom
Size
Parts
11| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3 |
| 2 | 10µF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C1, C2 |
| 2 | 2.2kΩ | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2 |
| 2 | AudioJack3 | Connector_Audio:Jack_3.5mm_CUI_SJ1-3513N_Horizontal | J1, J2 |
| 1 | Battery_Cell | Battery:BatteryHolder_Multicomp_BC-2001_1x2032 | BT1 |
| 1 | SW_SPST | Button_Switch_THT:SW_Slide_SPDT_Angled_CK_OS102011MA1Q | SW1 |
Questions
How big is the Microphone converter PCB?
It measures 48.5 × 35.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Microphone converter use?
11 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 Microphone converter KiCad files?
From the hatya-mouse/plugin-power-supplier repository on GitHub, at the commit this page was made from: the board is schematic/microphone_converter.kicad_pcb and its schematic schematic/microphone_converter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Microphone converter 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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