4 layers37.1 × 37.2 mm
Doorman
AzonInc/Doorman
ESP32-S3 based Intercom Gateway (TCS / Koch / Niko / Scantron / Analogue Systems)
44 parts252GPL-3.0
4 layers50 × 54 mm
Squeaker2
JennyDigital/GD32WavePlayerGD32 Version of my wave player, based on a modified version of my audio engine.
- Size
- 50 × 54 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 42
- Nets
- 58
- Pads
- 165
- Tracks, vias
- 303, 51
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 13 Feb 2026
- Updated
- 27 May 2026
Overview
Squeaker2 is an open-source printed circuit board by JennyDigital, from the JennyDigital/GD32WavePlayer repository on GitHub. It is a 4-layer board of 50 × 54 mm with 42 parts on 58 nets, routed with 303 tracks and 51 vias.
It is built around the L7805 and MB6S. Its parts include 14 capacitors, 5 resistors, 5 connectors, 4 ICs and 1 diode.
Main components
2
L7805
TO-220ST0℃~+125℃@(Tj) 1 1.2A 20V 2V@(1A) 42uV 500uA 5V 73dB@(120Hz) Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
MB6S
MBS-55℃~+150℃ 1.1V@400mA 1A 35A 5uA@600V 600V Single-Phase Rectifier MBS Bridge Rectifiers ROHSMDDBridge Rectifiers
Parts
42| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 100nF | Capacitor_SMD:C_0603_1608Metric | C2, C3, C4, C6, C9, C10, C11, C12, C13 |
| 5 | TestPoint | TestPoint:TestPoint_Pad_D2.0mm | ~{RST}1, GND1, SWCLK1, SWDIO1, VDD1 |
| 4 | ~ | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | OPT1, OPT2, OPT3, OPT4 |
| 2 | 10K | Resistor_SMD:R_0603_1608Metric | R1, R5 |
| 2 | 220nF | Capacitor_SMD:C_0603_1608Metric | C7, C8 |
| 2 | FerriteBead | Inductor_SMD:L_0603_1608Metric | FB1, FB2 |
| 1 | - SPK + | TerminalBlock_MetzConnect:TerminalBlock_MetzConnect_Type073_RT02602HBLU_1x02_P5.08mm_Horizontal | J5 |
| 1 | 100K | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C14 |
| 1 | 1M | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 220uF 35V | Capacitor_SMD:CP_Elec_8x10.5 | C1 |
| 1 | 22uF | Capacitor_SMD:C_0603_1608Metric | C5 |
| 1 | 330R | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | Conn_01x05_Pin | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J3 |
| 1 | GD32 | Package_QFP:TQFP-48_7x7mm_P0.5mm | U3 |
| 1 | L7805 | Package_TO_SOT_SMD:TO-263-2 | U1 |
| 1 | LD1117S33TR_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | MAX98357A | Package_DFN_QFN:TQFN-16-1EP_3x3mm_P0.5mm_EP1.23x1.23mm | U4 |
| 1 | MB6S | Package_TO_SOT_SMD:TO-269AA | D2 |
| 1 | R_Potentiometer_Trim | boures_trimmers:BOURNS-3362P_pot | VOL-> |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | GAIN1 |
| 1 | TRIG | TerminalBlock_MetzConnect:TerminalBlock_MetzConnect_Type073_RT02602HBLU_1x02_P5.08mm_Horizontal | J2 |
| 1 | Vin | TerminalBlock_MetzConnect:TerminalBlock_MetzConnect_Type073_RT02602HBLU_1x02_P5.08mm_Horizontal | J1 |
| 1 | ~ | Jens Connectors:1.27_2x5_SWD | CN1 |
Questions
How big is the Squeaker2 PCB?
It measures 50 × 54 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Squeaker2 use?
42 parts, built around the L7805 and MB6S. 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 Squeaker2 KiCad files?
From the JennyDigital/GD32WavePlayer repository on GitHub, at the commit this page was made from: the board is Platform/Squeaker2/Squeaker2.kicad_pcb and its schematic Platform/Squeaker2/Sound.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Squeaker2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask JennyDigital before reusing the design.
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