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!
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.