16
Hacking together a homemade flipper.
(lemmy.world)
Flipper Zero is a portable multi-tool for pentesters and geeks in a toy-like body. It loves to hack digital stuff around such as radio protocols, access control systems, hardware and more. It's fully opensource and customizable so you can extend it in whatever way you like.
Rules
Firmware:
Official resources:
Useful resources:
Esp32 comes with Bluetooth and Wifi
The flipper zero Wiki says it uses a STM32WB55, so you could always use that but the dev boards are a lot more expensive.
You'll also need to get an NFC and RFID module, maybe some other stuff.