Electronics and microcontroller projects
This is a NeoPixel driver, controlled by an infrared remote control, that fits on a small USB dongle that plugs into a USB-C power adapter to power the LEDs: The IR NeoPixel Controller, based on a Microchip AVR16DD20, plugs into a USB-C power adapter. It will drive a chain of several high-power NeoPixel LEDs; for example, to provide controllable illumination in a room. The IR remote control lets…
This is a wide-range digital signal generator that generates a crystal accurate square-wave of from 2Hz to approximately 33.5MHz in precise steps of 2Hz. You can enter an exact frequency using a numeric keypad, or adjust the frequency continuously using a rotary encoder, and the frequency is displayed on an OLED display: The Digital Signal Generator, based on an AVR16EB28, generates a square wave…
This is a 12-key numeric keypad for use in a range of microcontroller projects. It has the advantage that you only need one analogue input to interface it: The 12-key Numeric Keypad that interfaces to a single analogue input. It's on a small 1.2 x 1.6" (30 x 40mm) PCB, and I've also built a demo circuit to show how to use it. Introduction Microcontroller projects often need a numeric keypad, and a…