A toy car with additional functions:
Inputs for control voltage to trigger the sound samples, so the device can be played rhythmically with a sequencer.
The two knobs are used for sound control, a kind of gate function. They determine whether a sound is triggered and how long the "tone" is held.
A mono amplifier,
can be used as a preamp for microphones or as an amplifier of line signals to a loudspeaker.
An effect device with controls for overdrive and tone, similar to a distortion effect for guitars. Suitable for signals from the microphone, keyboard or audio from the smartphone.
Read more: Cornelia: Distortion/Filter Audio Effect with LM358
Dual Oscillator with additional output and Switch-Button to toggle between the voices