“This project is reminiscent of my USB analog panel meters project but the drive circuitry is significantly less complex. This post starts with a look at the engine cowl indicator, it’s theory of operation, and some ideas to control it using modern electronics. The post then covers the design of the board, the software for the microcontroller, and a Visual Studio C# .NET Windows Forms app for controlling the indicators from a PC.”
The completed and assembled board. The board features a USB 2.0 Type C connector, a PIC16F1459, four MCP41HV31 digital potentiometers, and a screw terminal strip to connect to power and the indicator.
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.