2 layers46.7 × 20.3 mm
2 layers17 × 20 mm
Daughter
daimapi/soundkey1- Size
- 17 × 20 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 10
- Nets
- 13
- Pads
- 50
- Tracks, vias
- 93, 17
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 15 Aug 2026
- Updated
- 15 Sep 2026
Overview
Daughter is an open-source printed circuit board by daimapi, from the daimapi/soundkey repository on GitHub. It is a 2-layer board of 17 × 20 mm with 10 parts on 13 nets, routed with 93 tracks and 17 vias.
It is built around the TP4057 and AO3401A. Its parts include 4 resistors, 2 connectors, 1 capacitor, 1 IC and 1 diode.
Main components
2Parts
10| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 5.1k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R2, R4 |
| 1 | 100k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R3 |
| 1 | 10uF | Capacitor_THT:C_Radial_D4.0mm_H5.0mm_P1.50mm | C8 |
| 1 | 15k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1 |
| 1 | 1N5819 | Diode_THT:D_DO-41_SOD81_P7.62mm_Horizontal | D1 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | TP4057 | Package_TO_SOT_SMD:TSOT-23-6 | U2 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J3 |
| 1 | daughter_Pad | 1_Library:Pad_7_1.5x2.0mm_G2.5mm | J2 |
Questions
How big is the Daughter PCB?
It measures 17 × 20 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Daughter use?
10 parts, built around the TP4057 and AO3401A. 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 Daughter KiCad files?
From the daimapi/soundkey repository on GitHub, at the commit this page was made from: the board is gaba/daughter/daughter.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 Daughter 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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