Back when I was going to electronics school in the 80’s I built and installed a Night Rider lighting system in a friends camero using a bi-directional shift register to control the lighting effects. When I started experimenting with the Arduino and learned about how to control shift registers with the Arduino I wanted to simulate the Night Rider.
In this project I use three shift registers to control 24 leds. The registers are connected together by taking serial out pin (pin 9) of the first shift register to the serial data input (pin 14) of the second register. Next you take the serial out pin (pin 9) of the second shift register to the serial data input (pin 14) of the third shift register.
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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.