[Timo] recently purchased himself a Acton Blink Qu4tro electric skateboard. Performance-wise, the board was great, but the controller left a lot to be desired. There were issues with pairing, battery displays, and just general rideability. Like any good hacker, he decided some reverse engineering was in order, and got to work.
Initial results were disheartening – the skateboard relies on various chips of Chinese origin for which documentation proved impossible to come by. However, as it turned out, the board and controller communicated using the common NRF24L01+ transceiver.
Initial work focused on understanding the pairing process and message protocol. With …read more
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