4 layers135.8 × 149.3 mm
TapBadgeV2
Xasin/TapBadgeV2
The second, far more ambitious version of the TapBadge wearable
110 parts6GPL-3.0
2 layers24.1 × 36.2 mm
Esp32miniBT
asterics/esp32_mouse_keyboard911ESP32 implementation for HID over GATT Keyboard and Mouse (Bluetooth Low Energy). Including serial API for external modules (similar to Adafruit EZKey HID)
- Size
- 24.1 × 36.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 28
- Nets
- 20
- Pads
- 98
- Tracks, vias
- 340, 45
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 16 Nov 2017
- Updated
- 8 Sep 2026
Overview
Esp32miniBT is an open-source printed circuit board by asterics, from the asterics/esp32_mouse_keyboard repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 24.1 × 36.2 mm with 28 parts on 20 nets, routed with 340 tracks and 45 vias.
It is built around the ESP32-WROOM-32 and CMM-4030D-261-I2S-TR. Its parts include 8 capacitors, 4 resistors, 2 ICs, 2 connectors and 1 diode. It belongs with the radio and wireless boards and the ESP32 boards of this library.
Main components
2
ESP32-WROOM-32
SMD,18x25.5mm-40℃~+85℃ -98dBm 2.4GHz 2.7V~3.6V 20dBm Bluetooth4.2 ESP32-DOWDQ6 UART、SDIO、SPI、I2C、GPIO、PWM、ADC、DAC SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
CMM-4030D-261-I2S-TR
--20℃~+70℃ -26dB 1.25mm 1.8V 100Hz~10000Hz 1mA 3mm 4mm 59dB I2S Omnidirectional Omnidirectional pickup - MEMS Microphones ROHSCUIMEMS Microphones
README
hardware/README.mdesp32miniBT
The hardware module is an addon board for the FLipMouse or FABI device. It is placed on a separate module on the AUX extension header. This folder here contains the KiCAD design files for PCB production.
This design was done in KiCAD v5.1.2. Please use a version equal or newer.
Note: If you are looking for the first revision of this board, open this GIT tag
Acknowledgements
-
many thanks to asukiaaa for the esp32bb design and the footprints: https://github.com/asukiaaa/esp32bb
-
Junaid Akhter Khan for the second revision of the PCB
Supported devices
- The FlipMouse is a universal finger- and mouth controller for mouse, keyboard, joystick and IR remote. Find more infos about the Flipmouse here: https://github.com/asterics/FLipMouse
- The FABI device is a switch interface for controlling mouse and keyboard in a versatile way: https://github.com/asterics/FABI
Parts
28| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | TestPoint | TestPoint:TestPoint_Pad_1.0x1.0mm | TP1, TP2, TP3, TP4, TP5, TP6 |
| 5 | 0.1uf | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C4, C6, C7, C8 |
| 2 | 100K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R4 |
| 2 | 10uf | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C5 |
| 1 | |||
| 1 | 100uf | Capacitor_SMD:C_1206_3216Metric_Pad1.42x1.75mm_HandSolder | C1 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2 |
| 1 | 330 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3 |
| 1 | 4.7u / TYS30104R7M-10 | Inductor_SMD:L_Taiyo-Yuden_MD-3030 | L1 |
| 1 | CMM-4030D-261-I2S-TR | I2S-MEMS-microphone-footprints-Lib:MIC_CMM-4030D-261-I2S-TR | MK1 |
| 1 | Conn_02x05_Odd_Even | Connector_PinSocket_2.54mm:PinSocket_2x05_P2.54mm_Vertical_SMD | J1 |
| 1 | D05 | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D1 |
| 1 | ESP32-WROOM | ESP32-footprints-Lib:ESP32-WROOM | U2 |
| 1 | MCP1603T-330I/OS | Package_TO_SOT_SMD:TSOT-23-5 | U1 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | J4 |
The 26 most common of 28 parts.
Questions
How big is the Esp32miniBT PCB?
It measures 24.1 × 36.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Esp32miniBT use?
28 parts, built around the ESP32-WROOM-32 and CMM-4030D-261-I2S-TR. 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 Esp32miniBT KiCad files?
From the asterics/esp32_mouse_keyboard repository on GitHub, at the commit this page was made from: the board is hardware/esp32miniBT.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Esp32miniBT 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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