2 layers50 × 80 mm
2 layers83.8 × 72.4 mm
Voice board
Windfisch/analog-synth31A low-cost semimodular analog synthesizer
- Size
- 83.8 × 72.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 131
- Nets
- 97
- Pads
- 391
- Tracks, vias
- 853, 35
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 28 Jun 2019
- Updated
- 15 Feb 2021
Overview
Voice board is an open-source printed circuit board by Windfisch, from the Windfisch/analog-synth repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 83.8 × 72.4 mm with 131 parts on 97 nets, routed with 853 tracks and 35 vias.
It is built around the LM324, MCP4822-E/P and BC557, with the BC547 and BC327 among its other parts. Its parts include 69 resistors, 22 transistors, 16 capacitors, 10 connectors and 4 diodes. It belongs with the audio and music boards of this library.
Main components
5
LM324
SOP-14-1.5V~10V 0℃~+70℃ 24V 250nA 3V~20V 4 40mA 50nA 700uA 7mV 80dB SOP-14 Operational Amplifier ROHSHXY MOSFETOperational Amplifier
MCP4822-E/P
PDIP-8-40℃~+125℃ 12 12LSB 2 2.7V~5.5V 20MHz 4.5us 415uA 50ppm/℃ Built-in Built-in SPI Voltage Buffer PDIP-8 Digital to Analog Converters (DAC) ROHSMicrochip TechnologyDigital To Analog Converters (DAC)
BC557
TO-921 PNP 100mA 100nA 150MHz 45V 500mW 6V 800 90mV、250mV PNP TO-92 Bipolar (BJT) ROHSDDFBipolar (BJT)BC547
TO-92Bipolar (BJT)Jiangsu Changjing Electronics Technology (CJ)BC327
TO-921 PNP 100MHz 45V 5V 625mW 630 700mV 800mA PNP TO-92 Bipolar (BJT) ROHSDDFBipolar (BJT)
README
hardware/vco_mk1/vco_mk1_spitfire/README.mdAlternative PCB layout by SpitfireX.
This design is a 2 layer PCB with all components on the front. As a result, it features a continuous ground plane on the back.
Parts
131| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R9, R10, R11, R36, R37, R38, R41, R44, R45, R50, R51, R60, R61, R62 |
| 14 | BC557 | Package_TO_SOT_THT:TO-92_Inline | Q2, Q4, Q5, Q6, Q7, Q8, Q9, Q10, Q11, Q12, Q13, Q14, Q15, Q16 |
| 10 | 100k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R3, R4, R6, R14, R15, R17, R23, R24, R33, R66 |
| 9 | 10k | Potentiometer_THT:Potentiometer_Runtron_RM-065_Vertical | R1, R2, R18, R19, R39, R57, R58, R59, R72 |
| 7 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R8, R22, R46, R47, R48, R49, R70 |
| 6 | Conn_02x02_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x02_P2.54mm_Vertical | J2, J3, J6, J7, J8, J9 |
| 4 | 100k | Potentiometer_THT:Potentiometer_Runtron_RM-065_Vertical | R7, R16, R20, R40 |
| 4 | 150 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R28, R29, R30, R31 |
| 4 | 47n | footprints:C_rect_smd_combo | C3, C4, C5, C6 |
| 4 | BC547 | Package_TO_SOT_THT:TO-92_Inline | Q17, Q18, Q21, Q22 |
| 3 | 1Meg | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R42, R43, R69 |
| 3 | 1u | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C10, C11, C17 |
| 3 | any | Potentiometer_THT:Potentiometer_Runtron_RM-065_Vertical | R63, R64, R65 |
| 3 | any | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C13, C14, C15 |
| 2 | 1N5817 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D3, D4 |
| 2 | 1k | Potentiometer_THT:Potentiometer_Runtron_RM-065_Vertical | R53, R54 |
| 2 | 1n | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C8, C9 |
| 2 | 20k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R12, R13 |
| 2 | 2N7000 | Package_TO_SOT_THT:TO-92_Inline | Q19, Q20 |
| 2 | 3V3 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2 |
| 2 | 470 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R27, R35 |
| 2 | 470u | Capacitor_THT:CP_Radial_D7.5mm_P2.50mm | C2, C7 |
| 2 | BC327 | Package_TO_SOT_THT:TO-92_Inline | Q1, Q3 |
| 2 | Conn_01x02_Male | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J4, J10 |
| 2 | Jumper_2_Bridged | footprints:SolderDipJumper2alt | JP1, JP2 |
| 1 | 10k | Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical | R71 |
| 1 | 10n | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C16 |
| 1 | 180 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R26 |
| 1 | 1Meg | Potentiometer_THT:Potentiometer_Runtron_RM-065_Vertical | R21 |
| 1 | 2.5k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R68 |
| 1 | 200k | Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical | R67 |
| 1 | 200k | Potentiometer_THT:Potentiometer_Runtron_RM-065_Vertical | R5 |
| 1 | 220 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R32 |
| 1 | 470n | Capacitor_THT:CP_Radial_D7.5mm_P2.50mm | C1 |
| 1 | 47k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R25 |
| 1 | 680 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R34 |
| 1 | Conn_01x04_Male | footprints:SolderDipJumper4alt | JP3 |
| 1 | Conn_02x03_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J5 |
| 1 | Conn_02x06_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x06_P2.54mm_Vertical | J1 |
| 1 | LM324 | Package_DIP:DIP-14_W7.62mm | U3 |
| 1 | LOGO | windfisch:windfisch_smaller | G*** |
| 1 | MCP4822 | Package_DIP:DIP-8_W7.62mm | U2 |
| 1 | TL074 | Package_DIP:DIP-14_W7.62mm | U1 |
The 128 most common of 131 parts.
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Questions
How big is the Voice board PCB?
It measures 83.8 × 72.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Voice board use?
131 parts, built around the LM324, MCP4822-E/P, BC557 and BC547. 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 Voice board KiCad files?
From the Windfisch/analog-synth repository on GitHub, at the commit this page was made from: the board is hardware/voice_board/voice_board.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Voice board design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).