2 layers60 × 126.6 mm
V3 Connector + IRLED
PiTracLM/PiTrac
Launch monitor using low-cost raspberry pi and camera hardware to determine ball launch speed, angles and spin. See https://discord.gg/vGuyAAxXJH (permalink)
151 parts439GPL-2.0
2 layers74.7 × 100.6 mm
PiezoPhone
rdpoor/PiezoPhoneArduino-based Digital Marimba / Xylophone / Glockenspiel
- Size
- 74.7 × 100.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 57
- Nets
- 49
- Pads
- 159
- Tracks, vias
- 120, 0
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 26 May 2026
- Updated
- 25 Jul 2026
Overview
PiezoPhone is an open-source printed circuit board by rdpoor, from the rdpoor/PiezoPhone repository on GitHub, published under the MIT licence. It is a 2-layer board of 74.7 × 100.6 mm with 57 parts on 49 nets, routed with 120 tracks and 0 vias.
It is built around the LM386, SB150-E3/73 and SJ1-3525NG. Its parts include 15 capacitors, 14 diodes, 9 resistors, 9 connectors and 1 IC. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3
LM386
SOP-80.2% 0℃~+70℃ 4V~12V 4mA 50dB 700mWx1@8Ω Analog voltage gain SOP-8 Audio Amplifiers ROHSGcoreAudio Power OpAmpsSB150-E3/73
DO-204AL(DO-41)-65℃~+150℃ 1 Independent 1A 500uA@50V 50A 50V 650mV@1A DO-204AL(DO-41) Schottky Diodes ROHSVishay IntertechnologySchottky Diodes
SJ1-3525NG
插件,12x11mm-25℃~+85℃ 12V 1A 3.5mm Headphone Jack Brass、Copper alloy Tin Plugin,12x11mm Audio Connectors ROHSCUIAudio Connectors (Headphones)
README
README.mdPiezoPhone
Arduino-based Digital Marimba / Xylophone / Glockenspiel
Parts
57| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | SB150-E3/73 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14 |
| 8 | 0.1 uf | Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C1, C2, C3, C4, C5, C6, C7, C16 |
| 7 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal | R1, R2, R3, R4, R5, R6, R7 |
| 7 | Screw_Terminal_01x02 | Connector_Phoenix_MSTB:PhoenixContact_MSTBVA_2,5_2-G_1x02_P5.00mm_Vertical | J1, J2, J3, J4, J5, J6, J7 |
| 4 | 10 uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C9, C12, C13, C15 |
| 4 | TestPoint | TestPoint:TestPoint_Keystone_5005-5009_Compact | TP1, TP2, TP3, TP4 |
| 2 | 0.1 uF | Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm | C11, C14 |
| 2 | FerriteBead | Resistor_THT:R_Axial_DIN0411_L9.9mm_D3.6mm_P12.70mm_Horizontal | FB1, FB2 |
| 1 | 1.2K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal | R8 |
| 1 | 10 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal | R9 |
| 1 | 10K | Snapeda:TRIM_3352T-1-103LF | RV1 |
| 1 | 250 uF | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C17 |
| 1 | Arduino_Nano_v3.x | Module:Arduino_Nano | A1 |
| 1 | Conn_01x02_Socket | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J9 |
| 1 | LM386 | Package_DIP:DIP-8_W7.62mm_Socket_LongPads | U1 |
| 1 | SJ1-3525NG | SJ1-3525NG_CUD_Footprint:SJ1-3525NG_CUD | J8 |
| 1 | SW_DIP_x04 | Package_DIP:DIP-8_W7.62mm_Socket | SW1 |
Questions
How big is the PiezoPhone PCB?
It measures 74.7 × 100.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the PiezoPhone use?
57 parts, built around the LM386, SB150-E3/73 and SJ1-3525NG. 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 PiezoPhone KiCad files?
From the rdpoor/PiezoPhone repository on GitHub, at the commit this page was made from: the board is PiezoPhone/_restore_backup_2026-07-01T14-12-37-191/PiezoPhone.kicad_pcb and its schematic PiezoPhone/PiezoPhone.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the PiezoPhone design in my own project?
Its repository publishes it under the MIT 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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