Squeaker2
About the Squeaker2 PCB
Squeaker2 is an open source GD32 PCB design by JennyDigital, published on GitHub. It is a 4-layer board measuring 50 × 54 mm, with 31 components from 20 distinct parts.
Its main chip is the GD32, from the GD32 family. Other key parts include the L7805, LD1117S33TR_SOT223 and MAX98357A. By type, the board carries 14 capacitors, 5 connectors, 5 resistors, 4 ICs, 2 inductors and 1 diode.
From the project
Platform for the GD32WavePlayer firmware.
Main components on the Squeaker2
Squeaker2 bill of materials (BOM)
31 components, 20 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | L7805 | TO-263-2 | U1 |
| 1 | LD1117S33TR_SOT223 | SOT-223-3_TabPin2 | U2 |
| 1 | GD32 | TQFP-48_7x7mm_P0.5mm | U3 |
| 1 | MAX98357A | TQFN-16-1EP_3x3mm_P0.5mm_EP1.23x1.23mm | U4 |
| 1 | ~ | 1.27_2x5_SWD | CN1 |
| 1 | Vin | TerminalBlock_MetzConnect_Type073_RT02602HBLU_1x02_P5.08mm_Horizontal | J1 |
| 1 | TRIG | TerminalBlock_MetzConnect_Type073_RT02602HBLU_1x02_P5.08mm_Horizontal | J2 |
| 1 | Conn_01x05_Pin | PinHeader_1x05_P2.54mm_Vertical | J3 |
| 1 | - SPK + | TerminalBlock_MetzConnect_Type073_RT02602HBLU_1x02_P5.08mm_Horizontal | J5 |
| 1 | MB6S | TO-269AA | D2 |
| 2 | FerriteBead | L_0603_1608Metric | FB1, FB2 |
| 1 | 220uF 35V | CP_Elec_8x10.5 | C1 |
| 9 | 100nF | C_0603_1608Metric | C2, C3, C4, C6, C9, C10, C11, C12 +1 |
| 1 | 22uF | C_0603_1608Metric | C5 |
| 2 | 220nF | C_0603_1608Metric | C7, C8 |
| 1 | 10uF | C_0603_1608Metric | C14 |
| 2 | 10K | R_0603_1608Metric | R1, R5 |
| 1 | 330R | R_0603_1608Metric | R2 |
| 1 | 1M | R_0603_1608Metric | R3 |
| 1 | 100K | R_0603_1608Metric | R4 |
Squeaker2 design files
The KiCad project lives in the JennyDigital/Squeaker2 repository on GitHub; these links point at the commit this page was built from.
- LayoutSqueaker2/Squeaker2.kicad_pcb
- SchematicSqueaker2/Squeaker2.kicad_sch
Squeaker2: common questions
What microcontroller does the Squeaker2 use?
The Squeaker2 is built around the GD32, from the GD32 family.
How big is the Squeaker2 PCB?
The Squeaker2 measures 50 × 54 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Squeaker2?
31 components, from 20 distinct parts. The full bill of materials is listed on this page.
Where can I download the Squeaker2 design files?
From the JennyDigital/Squeaker2 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Squeaker2 design in my own project?
The repository has no license, so all rights stay with JennyDigital. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Squeaker2 without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug GD32 firmware against it before you order a PCB.
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