2 layers148 × 84.5 mm
Panel daisy
ohmtech-rdi/eurorack-blocks
Software to Hardware Prototyping for Eurorack using C++, Max/Gen~ or Faust
259 parts410
2 layers43.4 × 25.6 mm
Volt
wenbang24/voltguitar but like bluetooth
- Size
- 43.4 × 25.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 37
- Nets
- 23
- Pads
- 92
- Tracks, vias
- 142, 4
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 18 Jun 2025
- Updated
- 15 Jul 2025
Overview
Volt is an open-source printed circuit board by wenbang24, from the wenbang24/volt repository on GitHub. It is a 2-layer board of 43.4 × 25.6 mm with 37 parts on 23 nets, routed with 142 tracks and 4 vias.
It is built around the TL072. Its parts include 11 capacitors, 11 resistors, 3 ICs, 3 connectors and 1 switch. It belongs with the audio and music boards of this library.
Main components
1README
README.mdVolt
A portable guitar amp that works with your bluetooth device, so you can play anywhere, anytime.
BOM
| Designator | Footprint | Quantity | Value | LCSC Part # | Link |
|---|---|---|---|---|---|
| C1, C13 | 0402 | 2 | 1u | C14445 | LCSC |
| C10, C3, C5 | 0402 | 3 | 100n | C1525 | LCSC |
| C2, C8 | 0402 | 2 | 4u7 | C23733 | LCSC |
| C4, C6 | 0805 | 2 | 47u | C1954938 | LCSC |
| C7 | 1206 | 1 | 100u | C883598 | LCSC |
| C9 | 0402 | 1 | 0.22u | C16772 | LCSC |
| R1 | 0402 | 1 | 1k | C26083 | LCSC |
| R10, R3 | 0402 | 2 | 4k7 | C25900 | LCSC |
| R11, R4, R6 | 0402 | 3 | 10k | C25744 | LCSC |
| R2, R7, R8, R9 | 0402 | 4 | 100k | C25741 | LCSC |
| R5 | 0402 | 1 | 220k | C25767 | LCSC |
| SW1 | SW_SPDT_PCM12 | 1 | SW_SPDT | C221841 | LCSC |
| U3 | VREG_LM7805MP_NOPB | 1 | LM7805_TO220 | C2848241 | LCSC |
Price: $6.47
Parts to source yourself
| Designator | Footprint | Quantity | Value | Link |
|---|---|---|---|---|
| U1 | DIP-8 | 1 | TL072 | AliExpress |
| U2 | 1 | BT 5.3 Audio Transmitter | AliExpress | |
| J1 | 1 | 1/4" Audio Jack | AliExpress | |
| J2 | 1 | 9V Battery Connector | AliExpress | |
| RV1 | 1 | 100k Potentiometer (logarithmic) | Core Electronics | |
| RV2 | 1 | 100k Potentiometer (linear) | Core Electronics | |
| 4 | M2 Screws | AliExpress |
Price: $16.57
Also:
- 9V Battery
- Case (files in
case/) - Some wires & solder
Total PCB & PCBA Price: $32.51
Total Price: $49.08
Total Price + est. shipping: $60.00
(prices converted from AUD to USD, accurate as of 2025-06-29)
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 100k | Resistor_SMD:R_0402_1005Metric | R2, R7, R8, R9 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 3 | 100n | Capacitor_SMD:C_0402_1005Metric | C3, C5, C10 |
| 3 | 10k | Resistor_SMD:R_0402_1005Metric | R4, R6, R11 |
| 3 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1, J2, J3 |
| 2 | 100k | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | RV1, RV2 |
| 2 | 1u | Capacitor_SMD:C_0402_1005Metric | C1, C13 |
| 2 | 47u | Capacitor_SMD:C_0805_2012Metric | C4, C6 |
| 2 | 4k7 | Resistor_SMD:R_0402_1005Metric | R3, R10 |
| 2 | 4u7 | Capacitor_SMD:C_0402_1005Metric | C2, C8 |
| 2 | LOGO | LOGO | G***, G*** |
| 1 | 0.22u | Capacitor_SMD:C_0402_1005Metric | C9 |
| 1 | 100u | Capacitor_SMD:C_1206_3216Metric | C7 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 220k | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | BT | VoltFootprints:BT_Transmitter | U2 |
| 1 | LM7805_TO220 | LM7805MP_NOPB:VREG_LM7805MP_NOPB | U3 |
| 1 | SW_SPDT | Button_Switch_SMD:SW_SPDT_PCM12 | SW1 |
| 1 | TL072 | TL072CN:DIP254P762X533-8 | U1 |
Questions
How big is the Volt PCB?
It measures 43.4 × 25.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Volt use?
37 parts, built around the TL072. 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 Volt KiCad files?
From the wenbang24/volt repository on GitHub, at the commit this page was made from: the board is pcb/pcb.kicad_pcb and its schematic pcb/pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Volt design in my own project?
Its repository states no licence, so its author keeps all rights: ask wenbang24 before reusing the design.
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