2 layers46.7 × 20.3 mm
2 layers
Soundkey
daimapi/soundkey1- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 5
- Nets
- 26
- Pads
- 31
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 15 Aug 2026
- Updated
- 15 Sep 2026
Overview
Soundkey is an open-source printed circuit board by daimapi, from the daimapi/soundkey repository on GitHub. It is a 2-layer board with 5 parts on 26 nets.
It is built around the TP4057, BSS84 and SPH0641LU4H-1. Its parts include 1 IC, 1 diode, 1 transistor and 1 connector.
Main components
3
TP4057
SOT-23-6-40℃~+85℃ 1 25uA 4.24V 4V~6.5V Charging IC Lithium Battery Not supported SOT-23-6 Battery Management ROHSTECH PUBLICBattery Management
BSS84
SOT-23-55℃~+150℃ 1 P-Channel 130mA 2.8pF 24.6pF 2V 3.2Ω@5V 300mW 4.7pF 50V 590pC@10V SOT-23 MOSFETs ROHSDiodes IncorporatedMOSFETs
SPH0641LU4H-1
LGA-5(3.5x2.7)-26dB 0.98mm 1.8V 2.65mm 235uA~270uA 3.5mm 64.3dB Omnidirectional Omnidirectional pickup LGA-5(3.5x2.7) MEMS Microphones ROHSKnowlesMEMS Microphones
Parts
5| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | 1N5819 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D2 |
| 1 | BSS84 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | ISD1820 | Package_DIP:DIP-14_W7.62mm_Socket | J1 |
| 1 | SPH0641LU4H-1 | Sensor_Audio:Knowles_LGA-5_3.5x2.65mm | MK1 |
| 1 | TP4057 | Package_TO_SOT_SMD:TSOT-23-6 | U2 |
Questions
What parts does the Soundkey use?
5 parts, built around the TP4057, BSS84 and SPH0641LU4H-1. 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 Soundkey KiCad files?
From the daimapi/soundkey repository on GitHub, at the commit this page was made from: the board is _restore_backup_2026-08-17T17-30-11-840/soundkey.kicad_pcb and its schematic _restore_backup_2026-08-17T17-30-11-840/soundkey.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Soundkey design in my own project?
Its repository states no licence, so its author keeps all rights: ask daimapi before reusing the design.
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