Walkthrough: ‘Learning QUCS, KiCad and Freecad’ with a Wah Pedal Project
Not so long ago a friend showed me a little circuit which I thought was quite interesting (The Wah Pedal), a simple variable active filter with a couple of transistors but with no variable reactive components. So I thought eventually, some day, I should take the time to understand it more deeply, simulate it and put it in a little PCB; a great example project for learning a couple of new design tools. Well I did!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.