I have done several projects, but wanted to play with the Arduino. Instead of just getting an LED to “Hello World”, I decided to lump a few basic, commonly used uC features into one easy project. Results were good. I learned many of the Arduino basics and was left with an interesting project.
Objective: Reflect a laser beam off mirrors mounted on three fans to display a ‘wild’ 3D spirograph type pattern on any surface. Provide fan speed control (manual or automatic) to adjust the displayed patterns. Full electrical schematic and source code follows….
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.