2 layers90 × 45 mm
Esp32-dalitester
lukasprojects/esp32-dalitester
Small ESP32 DALI tester for commissioning and maintaining light installations via the DALI bus
84 parts
4 layers50 × 54 mm
Squeaker2
JennyDigital/Squeaker2Platform for the GD32WavePlayer firmware.
- Size
- 50 × 54 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 58
- Pads
- 155
- Tracks, vias
- 283, 51
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 17 Feb 2026
- Updated
- 25 Apr 2026
Overview
Squeaker2 is an open-source printed circuit board by JennyDigital, from the JennyDigital/Squeaker2 repository on GitHub. It is a 4-layer board of 50 × 54 mm with 36 parts on 58 nets, routed with 283 tracks and 51 vias.
It is built around the L7805 and MB8S. Its parts include 14 capacitors, 5 resistors, 4 ICs, 4 connectors 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
MB8S
MBS-55℃~+150℃ 1.1V@1A 1A 35A 5uA@800V 800V Single-Phase Rectifier MBS Bridge Rectifiers ROHSMDDBridge Rectifiers
Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 100nF | Capacitor_SMD:C_0603_1608Metric | C2, C3, C4, C6, C9, C10, C11, C12, C13 |
| 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 | 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 | 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 | MB8S | Package_TO_SOT_SMD:TO-269AA | D1 |
| 1 | R_Potentiometer_Trim | boures_trimmers:BOURNS-3362P_pot | VOL-> |
| 1 | SPK | TerminalBlock_MetzConnect:TerminalBlock_MetzConnect_Type073_RT02602HBLU_1x02_P5.08mm_Horizontal | J5 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | GAIN |
| 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 | gd32 | Package_QFP:TQFP-48_7x7mm_P0.5mm | U3 |
| 1 | ~ | Jens Connectors:1.27_2x5_SWD | CN1 |
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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?
36 parts, built around the L7805 and MB8S. 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/Squeaker2 repository on GitHub, at the commit this page was made from: the board is Squeaker2.kicad_pcb and its schematic 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.