Every time I bought a record. I used to set up the calibrated microphone. connect the oscilloscope. start the music with hated breath, and keep my eyes glued to the screen. If anything on the ‘scope pattern looked suspicious (something always did), I would start checking tubes, voltages and crossover frequencies, and examine the record under a microscope.
The good ole’ days.
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.