Here is an Arduino based circuit with three independent pulse width modulated (PWM) channels to fulfil your requirements! Just follow the schematic diagram to complete the construction, and use any ...

The schematic-configured breadboard, comes with integrated analog and digital functions, variable power supply, and Arduino capability. Microaware’s Sandwizz, a schematic-configurable breadboard ...

Next is the complete schematic diagram of a little Arduino board for your everyday projects. Use the Atmega328P chip, with Arduino bootloader loaded by you, as the brain of this economical circuit.