HardLabs

MCTheremin

sinitsinmike·PicoTheremin·board/MCTheremin.kicad_pcb

MCTheremin PCB layout, top view — open source RP2040/RP2350 board by sinitsinmike

About the MCTheremin PCB

MCTheremin is an open source RP2040/RP2350 PCB design by sinitsinmike, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 103 components from 28 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. Other key parts include the 74HC04, LM7805_TO220, LM386 and LM358. By type, the board carries 39 resistors, 29 capacitors, 16 connectors, 6 ICs, 4 switches and 3 diodes.

From the project

This is a theremin based on the "Bluepill" devboard with a STM32F103C8T6 microcontroller. This material is copyrighted by Daniel Marks (KW4TI) and licensed under the Creative Commons License CC-BY-SA 4.0. Software is copyrighted using the zlib open-source license.

This is a theremin based on the "Bluepill" devboard with a STM32F103C8T6 microcontroller. This material is copyrighted by Daniel Marks (KW4TI) and licensed under the Creative Commons License CC-BY-SA 4.0. Software is copyrighted using the zlib open-source license.

MCTheremin directory - the stm32duino project

board - the PCB board in Kicad of the theremin.

genwaves - little octave script to generate the waveform data

Main components on the MCTheremin

74HC04LM7805_TO220LM386LM358Pico

MCTheremin bill of materials (BOM)

103 components, 28 distinct parts.

QtyPartRefs
2
74HC04
U1, U6
1
LM7805_TO220
U3
1
LM386
U4
1
LM358
U5
1
Pico
U7
2
2N3904
Q1, Q3
1
Barrel_Jack
J1
6
Conn_01x02
J2, J5, J6, J9, J10, J13
2
AudioJack2_Dual_Ground_Switch
J3, J4
6
Conn_01x01
J7, J8, J11, J12, J14, J15
1
DIN-5_180degree
J21
4
10k
RV1, RV2, RV4, RV5
4
SW_Push
SW1, SW2, SW3, SW4
3
LED
D1, D2, D3
16
100 nF
C1, C2, C3, C7, C11, C14, C15, C16 +8
2
10 nF
C4, C27
2
100 uF
C5, C10
1
10 uF
C6
2
100 pF
C8, C9
2
220 uF
C12, C13
Show 8 more
QtyPartRefs
2
150 pF
C23, C25
2
220 pF
C24, C26
3
2.2M
R1, R2, R27
16
1k
R3, R4, R5, R7, R8, R12, R13, R16 +8
11
10k
R6, R9, R11, R14, R24, R26, R30, R31 +3
5
2k
R10, R15, R37, R38, R39
2
220R
R19, R25
2
2k2
R21, R23

MCTheremin design files

The KiCad project lives in the sinitsinmike/PicoTheremin repository on GitHub; these links point at the commit this page was built from.

MCTheremin: common questions

What microcontroller does the MCTheremin use?

The MCTheremin is built around the Pico, from the RP2040/RP2350 family.

How big is the MCTheremin PCB?

The MCTheremin measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MCTheremin?

103 components, from 28 distinct parts. The full bill of materials is listed on this page.

Where can I download the MCTheremin design files?

From the sinitsinmike/PicoTheremin repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the MCTheremin design in my own project?

The repository has no license, so all rights stay with sinitsinmike. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the MCTheremin without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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