
StereoTheremin
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.

ESP32 based power monitoring system. Uses impulse LED on smart meter to export power usage to prometheus.
SmartMeterMonitor is an open-source printed circuit board by BIOS9, from the BIOS9/SmartMeterMonitor repository on GitHub. It is a 2-layer board with 6 parts on 8 nets, routed with 33 tracks and 0 vias.
It is built around the LM324AN. Its parts include 5 resistors and 1 IC.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R4 |
| 1 | 150K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 18K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3 |
| 1 | 6.6K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5 |
| 1 | LM324AN | digikey-footprints:DIP-14_W3mm | U1 |
6 parts, built around the LM324AN. 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 BIOS9/SmartMeterMonitor repository on GitHub, at the commit this page was made from: the board is circuit/circuit.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask BIOS9 before reusing the design.

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.



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