Reverse engineering the Laotie Ti30 scooter LCD display - part 3 - Encryption Broken!

 

 

In the previous post I had the chance of discovering and documenting most of what there is to learn about the communication between the LCD unit and the master ESC (speed controller) that drives the e-Scooter rear motor.

Reverse engineering the Laotie Ti30 scooter LCD display - part 2

Most e-Scooters and other Electric Vehicles have some form of Electronic Speed Controller (ESC) which is responsible for delivering a power signal that will spin motors at the desired speed. The most common type of motors today are of the BLDC type (Brushless DC motors), which are typically driven by a 3-phase current.

My experience with a grown man Electric Scooter - the Chinese 5600 Watt Laotie Ti30 - Part 3

The Laotie Ti30 (and other similar chinese scooters) comes with a basic alarm device that is capable of locking the scooter via a remote control. These alarm boxes are usually dirt cheap and can be bought separately for 5 € on Aliexpress or similar seller.

My experience with a grown man Electric Scooter - the Chinese 5600 Watt Laotie Ti30 - Part 2

Moving along with the range of improvements that this scooter requires - of which some are practically essential, the parts I needed for doing a few more improvements have conveniently arrived.

My experience with a grown man Electric Scooter - the Chinese 5600 Watt Laotie Ti30 - Part 1

For a couple of years I have been playing around with the popular Xiaomi M365 which I bought back then. In spite of a few nitpicks it is an okay scooter, and good value for money for those looking for a small vehicle that can cover moderate distances (about 20 km per charge) while still being carriable (it only weights about 12.5 Kg).