HardLabs

OpenTheremin V3 Shield

GaudiLabs·OpenTheremin_V3_Shield·PCB/OpenThereminCC.kicad_pcb

OpenTheremin V3 Shield layout, top view — open source AVR/Arduino board by GaudiLabs

About the OpenTheremin V3 Shield

OpenTheremin V3 Shield is an open source AVR/Arduino PCB design by GaudiLabs, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 60 × 100 mm, with 84 components from 43 distinct parts.

Its main chip is the Arduino_UNO_R2, from the AVR/Arduino family. Other key parts include the 4060, 74HC74, 4069, MCP4921-E/SN and MCP4922-E/SL. By type, the board carries 28 capacitors, 17 resistors, 10 crystals, 9 connectors, 8 ICs and 4 diodes.

It belongs with the test & measurement and dev boards & breakouts designs in this gallery.

From the project

Open Source Theremin Instrument, Shield PCB and Hardware description

Schematics, printed circuit board (PCB) design, bill of materials (BOM) for the Open.Theremin.V3 arduino shield. For software see separate git repository.

Open.Theremin.V3 is an arduino shield to build the legendary music instrument invented by Leon Theremin back in 1920. The theremin is played with two antennas, one to control the pitch and one for volume. The electronic shield with two ports to connect those antennas comprises two heterodyne oscillators to measure the distance of the hand to the antenna when playing the instrument. The resulting signal is fed into the arduino. After…

Main components on the OpenTheremin V3 Shield

Arduino_UNO_R2406074HC744069MCP4921-E/SNMCP4922-E/SLLM358 / MCP6002

OpenTheremin V3 Shield bill of materials (BOM)

84 components, 43 distinct parts.

QtyPartRefs
1
Arduino_UNO_R2
U1
2
4060
U2, U3
1
74HC74
U4
1
4069
U5
1
MCP4921-E/SN
U6
1
MCP4922-E/SL
U7
1
LM358 / MCP6002
U8
1
8MHz
X1
1
7.3721MHz
X2
2
MountPad3
Y1, Y2
2
CONN_01X08
Y3, Y4
3
CONN_01X06
Y5, Y6, Y8
1
PLUG_3_5_SMD
Y7
4
10k
P1, P2, P3, P4
1
SP+
P5
1
SP-
P6
1
CONN_01X01
P7
2
CONN_01X01
P8, P9
1
GND_PAD
GROUND1
1
SW_PUSH
SW1
Show 23 more
QtyPartRefs
1
PITCH ANTENNA
TP6
1
VOLUME ANTENNA
TP7
1
TP1
W3
1
TP2
W4
2
BB914
D1, D2
2
LED
D3, D4
2
1mH
L1, L2
1
220pF 270pF?
C1
4
150pF
C2, C3, C9, C10
1
15nF?
C4
2
470pF
C5, C12
8
100nF
C6, C13, C23, C24, C25, C26, C27, C28
2
?pF
C7, C14
1
330pF
C8
1
0
C11
4
33pF
C15, C16, C17, C18
2
100n
C20, C21
1
10n
C22
1
10uF
C29
4
4.7M
R1, R5, R11, R13
3
2.2k
R2, R6, R17
6
100k
R3, R4, R7, R8, R15, R16
4
470
R12, R14, R18, R19

OpenTheremin V3 Shield design files

The KiCad project lives in the GaudiLabs/OpenTheremin_V3_Shield repository on GitHub; these links point at the commit this page was built from.

OpenTheremin V3 Shield: common questions

What microcontroller does the OpenTheremin V3 Shield use?

The OpenTheremin V3 Shield is built around the Arduino_UNO_R2, from the AVR/Arduino family.

How big is the OpenTheremin V3 Shield?

The OpenTheremin V3 Shield measures 60 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the OpenTheremin V3 Shield?

84 components, from 43 distinct parts. The full bill of materials is listed on this page.

Where can I download the OpenTheremin V3 Shield design files?

From the GaudiLabs/OpenTheremin_V3_Shield repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the OpenTheremin V3 Shield design in my own project?

Yes, under the terms of its GPL-3.0 license, which GaudiLabs chose for the repository.

Can I test firmware for the OpenTheremin V3 Shield without the hardware?

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

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