Posts

All the articles I've posted.

• Decoding a hot tub: the Jacuzzi "encrypted" RS485 protocol

  9 Nov, 2026

  The encryption on a Jacuzzi J235's control bus is one random byte and a fixed key stream. How I worked that out, with a decoder that runs in your browser.

• CAN Bus Hacking

  15 Aug, 2023

  Using an ESP32 on a BMW F30's CAN bus to make steering wheel controls work with an aftermarket head unit.