| This 4th order audio filter design is based on four LDRs controlled by one LED. Driving the LED you can control the cutt-off frequency from...
RS-elc (29)
| Here is a serious tiny music synthesizer using an Arduino Mini as a dual digital oscillator. It has an analog voltage controlled resonant fi...
| Music synthesizer with voltage controlled analog resonant filter and analog VCA. Double oscillator with wavemodulation and two loopable enve...
| This 2nd order filter uses four passive components. Frequency control with a current/voltage. Audio examples are given for synthesizer appli...
| This simple single-supply low-pass filter features a voltage-controlled exponential cut-off frequency over nine octaves and has a voltage-co...
| Lowpassfilter with voltage controlled frequency and Q (up to oscillation). Runs on single supply 5V and can be sweeped from 16kHz to 30Hz wi...
| This synthesizer exploits pseudo-random binary sequences (PRBS) to create percussive and pitched sounds, and other sound effects. It comes w...
| Music synthesizer based on noise and pattern generation. Sound effects, percussion and pitched sounds can be generated. Comes with multimode...
| Electric charge detector using 3 components only. Warns you when electrically charged objects appear. Runs for months on a battery.