mikechristle/StereoThereminI'm sure you are familiar with the Theremin. It is a musical instrument that uses hand movements to control pitch and volume. With my version each hand controls both pitch and volume. The up/down motion controls volume, and the right/left motion controls pitch. This way the right hand plays treble and the left hand plays base, like a piano.
StereoTheremin is an open-source printed circuit board by mikechristle, from the mikechristle/StereoTheremin repository on GitHub, published under the MIT licence. It is a 2-layer board of 381 × 50.8 mm with 92 parts on 74 nets, routed with 504 tracks and 13 vias.
It is built around the LM324AN, LM78M05CH and MCP42010-I/P. Its parts include 35 resistors, 26 capacitors, 6 ICs, 4 diodes and 4 connectors. It belongs with the RP2040 boards of this library.
II'm sure you are familiar with the Theremin. It is a musical instrument that uses hand movements to control pitch and volume. One hand controls pitch, and the other hand control volume. I like the expressiveness of a no contact instrument, but controlling two variables is just too limiting. With my version each hand controls both pitch and volume. The up/down motion controls volume, and the right/left motion controls pitch. This way the right hand plays treble and the left hand plays base, like a piano.
The micropython code that runs on the Raspberry PI Pico.
The python code that runs on a PC or a tablet to control the Stereo Theremin.
The KiCad files for the printed circuit board. Version 10.0.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 100K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R20, R21, R24, R25, R28, R29, R32, R33 |
| 8 | 30p | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C12, C13, C14, C15, C16, C17, C18, C19 |
| 7 | 10K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R2, R5, R8, R9, R14, R15, R19 |
| 7 | 1M | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R6, R12, R18, R23, R27, R31, R35 |
| 6 | 1n | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C20, C21, C22, C25, C27, C28 |
| 6 | 56K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1, R3, R7, R10, R13, R16 |
| 5 | 100n | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C3, C4, C5, C6, C7 |
| 4 | 10u | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C8, C9, C10, C11 |
| 4 | 300K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R22, R26, R30, R34 |
| 3 | 1M8 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R4, R11, R17 |
| 3 | 1N4001 | Diode_THT:D_A-405_P7.62mm_Horizontal | D1, D2, D3 |
| 3 | Mic | STFootPrints:Ultra Sonic TR | MK1, MK2, MK3 |
| 2 | 10u | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1, C2 |
| 2 | Conn_01x02_Pin | STFootPrints:PinHeader_1x02_P2.54mm_Vertical | J3, J4 |
| 2 | SN76489AN | Package_DIP:DIP-16_W7.62mm | U3, U6 |
| 2 | Speaker | STFootPrints:Ultra Sonic TR | LS1, LS2 |
| 1 | 1N5817 | Diode_THT:D_A-405_P7.62mm_Horizontal | D4 |
| 1 | 1u | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C26 |
| 1 | AudioJack | STFootPrints:STX-3000 | J1 |
| 1 | Conn_01x03_Socket | Connector_BarrelJack:BarrelJack_Kycon_KLDX-0202-xC_Horizontal | J2 |
| 1 | DL0 | TestPoint:TestPoint_Loop_D2.50mm_Drill1.85mm | TP9 |
| 1 | DL1 | TestPoint:TestPoint_Loop_D2.50mm_Drill1.85mm | TP8 |
| 1 | DR0 | TestPoint:TestPoint_Loop_D2.50mm_Drill1.85mm | TP6 |
| 1 | DR1 | TestPoint:TestPoint_Loop_D2.50mm_Drill1.85mm | TP7 |
| 1 | LM324AN | Package_DIP:DIP-14_W7.62mm | U4 |
| 1 | LM78M05 | Package_TO_SOT_SMD:TO-252-2 | U2 |
| 1 | LOUT | TestPoint:TestPoint_Loop_D2.50mm_Drill1.85mm | TP5 |
| 1 | MCP42010 | Package_DIP:DIP-14_W7.62mm | U5 |
| 1 | RL | TestPoint:TestPoint_Loop_D2.50mm_Drill1.85mm | TP1 |
| 1 | RM | TestPoint:TestPoint_Loop_D2.50mm_Drill1.85mm | TP2 |
| 1 | ROUT | TestPoint:TestPoint_Loop_D2.50mm_Drill1.85mm | TP4 |
| 1 | RR | TestPoint:TestPoint_Loop_D2.50mm_Drill1.85mm | TP3 |
| 1 | RaspberryPi_Pico | STFootPrints:RaspberryPi_Pico_Common_THT | A1 |
| 1 | TL974 | Package_DIP:DIP-14_W7.62mm | U1 |
The 90 most common of 92 parts.
mikechristle/StereoTheremin
I'm sure you are familiar with the Theremin. It is a musical instrument that uses hand movements to control pitch and volume. With my version each hand controls both pitch and volume.
BIOS9/SmartMeterMonitor
ESP32 based power monitoring system. Uses impulse LED on smart meter to export power usage to prometheus.
Vishalbabu-09/Auralab_Workstation
Advanced 4-layer PCB design featuring split-plane noise isolation (AGND/DGND) and asynchronous dual-core processing. Implements a handheld multi-tool oscilloscope, current tracker, and symmetrical DC power supply.
It measures 381 × 50.8 mm and has 2 copper layers, 1.6 mm thick.
92 parts, built around the LM324AN, LM78M05CH and MCP42010-I/P. 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.
From the mikechristle/StereoTheremin repository on GitHub, at the commit this page was made from: the board is PCB/Rev3.kicad_pcb and its schematic PCB/Rev2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).