Always fascinating to see how many different ways old hardware can be repurposed when it's left even moderately open to hacking. Most of those hacked Gameboys a

Always fascinating to see how many different ways old hardware can be repurposed when it's left even moderately open to hacking. Most of those hacked Gameboys and similar hardware would have been thrown in a landfill decades ago instead of being used today to play with electronics and programming. As for adding radio capability to old hardware, there are super cheap very small modules available using the RDA5807, TEA5767 and similar chips that can be easily driven by a microcontroller; some are well supported by Arduino libraries. https://github.com/pu2clr/RDA5807 https://github.com/pu2clr/RDA5807 https://github.com/big12boy/TEA5767 https://github.com/big12boy/TEA5767 https://www.aliexpress.com/item/32310815975.html https://www.aliexpress.com/item/32310815975.html (no relation with the seller, just search for chip name and module)