Andrey Smirnov - theremin sensors

Tests and troubleshooting

T-Sensor version 0.41 pinout:

1. Output to audiocard +2.5/-2.5 v. (about 5 kHz)
2. Ground 0 v.
3.Pulse output 0/+5 v. to microcontroller (about 20 kHz)
4. Hi freq. output. Pulses 0/+5 v. (about 160 kHz)
5. External Synchronisation input1
6. External Synchronisation input2
7. Ground 0 v.
8. Power +9 v. & extra output for long distance connection
9, 10. Antenna (paralleled).

OSCILOGRAMS

No antenna connected!!

Time scale 0.1 ms/mesure

Input level scale - 5 volts/mesure

Pin1

Pin2 - 0 Volts (ground)

Pin3

Pin4

Pin4 with the time scale 10 mks/mesure

Pin5 and Pin6 - 0 Volts

Pin7 - ground

Pin8 - Power (min +7, max +10)

4069 pin2. Time scale 10 mks/mesure

4069 pin3

4518 pin2

4518 pin3

4518 pin4

4518 pin5

4518 pin6

4518 pin11

The way to connect the sensor to computer's audio input

Sound preferences and input level setings

Input level in the theremin00 patch

Carrier frequency should be about 4000 (3500 - 4500)

Patch view after DSP on, prior to the "set zero" (push space)

Patch view just after "set zero" (push space)

Patch view during correct sensor operetion

ARDUINO CONNECTION

The sensor should be powered with external power supply min +7, max + 10 v

Learn More:

Theremin Sensors

Theremin Kitchen Workshop

Dealing with Theremin Sensors: pinouts and connections

Multichannel interfaces

Theremin Sensors Circuitry

Theremin Coil construction

Classical Theremins

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