TL;DR
This article showcases a creative project where a maker has turned a walnut shell into an infrared (IR) blaster. The project utilizes a tiny ESP32-C3 microcontroller, which is small enough to fit inside the walnut, along with strategically placed LEDs. After enjoying the walnut as a snack, the maker sealed the shell with neodymium magnets and set up the electronics to control the LEDs.