[Mark] from SpikenzieLabs was wrapping up a project using an Arduino the other day and found himself in need of a few more I/O pins. He could have added extra circuitry to the project, but he decided ...

4HP through hole version of the HAGIWO FM/additive/chord oscillator with mode switch and gain input. This module is basically my PCB version of the HAGIWO osc, heavily inspired by luis lutz version.

4HP through hole version of the HAGIWO FM/additive/chord oscillator with mode switch and gain input. This module is basically my PCB version of the HAGIWO osc, heavily inspired by luis lutz version.

Although it dates back to the early days of the Marconi Company in the 1920s, the Franklin oscillator has remained a ...

2 Arduino Uno shields provide an oscillator, an attenuator and a detector, all under Arduino Serial or CLI control. Control and readout can be automated using e.g. a shell script. This circuit is ...