4 layers80 × 45.6 mm
Esphome sound thermometer
H3mul/esphome-sound-thermometer
Quick project with an LED strip illuminating in response to sound volume changes
26 parts1MIT
2 layers48 × 27 mm
Micro Sumo
Alejojoa/Micro_SumoMain Micro Sumo repo. Boards, Hardware, Software, and Desings.
- Size
- 48 × 27 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 24
- Nets
- 25
- Pads
- 98
- Tracks, vias
- 132, 134
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 29 Sep 2025
- Updated
- 15 Oct 2025
Overview
Micro Sumo is an open-source printed circuit board by Alejojoa, from the Alejojoa/Micro_Sumo repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 48 × 27 mm with 24 parts on 25 nets, routed with 132 tracks and 134 vias.
It is built around the AMS1117 and WS2812B. Its parts include 5 capacitors, 4 diodes, 4 connectors, 3 ICs and 2 switches. It belongs with the ESP32 and RISC-V boards of this library.
Main components
2README
README.mdMicro_Sumo
Main Micro Sumo repo. Boards, Hardware, Software, and Desings.
Parts
24| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 0.1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C3, C4, C5 |
| 2 | MountingHole | MountingHole:MountingHole_2.2mm_M2_ISO7380 | H1, H2 |
| 2 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D2, D3 |
| 1 | 10uF | Capacitor_Tantalum_SMD:CP_EIA-3528-12_Kemet-T | C2 |
| 1 | 2.7K | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | AMS1117 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U4 |
| 1 | Battery | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J4 |
| 1 | Conn_01x15_Pin | Connector_PinHeader_2.54mm:PinHeader_1x15_P2.54mm_Vertical | J6 |
| 1 | ESP32-C3_SUPERMINI | MixLib:MODULE_ESP32-C3_SUPERMINI | U2 |
| 1 | Jumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP |
| 1 | LED | MixLib:LED_0805_2012Metric | D4 |
| 1 | LOGO | AJ_IMG:Frieren | G*** |
| 1 | LOGO | AJ_IMG:EESTN5 3 Estrellas | G*** |
| 1 | M7 | Diode_SMD:D_SMA | D1 |
| 1 | Motor A | Connector_PinHeader_2.00mm:PinHeader_1x02_P2.00mm_Vertical | J1 |
| 1 | Motor B | Connector_PinHeader_2.00mm:PinHeader_1x02_P2.00mm_Vertical | J2 |
| 1 | SW_DPST_x2 | AJ_Lib:SW_SLW-116641-5A-S-D | SW1 |
| 1 | SW_Push | Button_Switch_SMD:SW_Tactile_SPST_NO_Straight_CK_PTS636Sx25SMTRLFS | SW2 |
| 1 | TB6612FNG | Package_SO:SSOP-24_5.3x8.2mm_P0.65mm | U1 |
Questions
How big is the Micro Sumo PCB?
It measures 48 × 27 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Micro Sumo use?
24 parts, built around the AMS1117 and WS2812B. 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 Micro Sumo KiCad files?
From the Alejojoa/Micro_Sumo repository on GitHub, at the commit this page was made from: the board is MicroSumo/MicroSumo.kicad_pcb and its schematic MicroSumo/MicroSumo.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Micro Sumo 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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