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The RF remote control is not suitable for logic analyzers!

Posted on September 16, 2021 by William

Neewer NL660-2.4 Video Keylight has a convenient remote control that can be used [Tom Clement] There is a major flaw, it cannot restore the light to the state it was in when it was last powered on. Therefore, he took the trouble to reverse engineer it and created his own remote control Use an appropriately equipped Arduino clone.

This article is an introductory guide for potential RF remote hackers. Before attempting to dump the firmware of STM8, identify the brain as STM8 and the radio as a clone of NRF24. As expected, the STM is protected, leaving only the option of sniffing the connection between the two chips. Use a logic analyzer to properly probe the SPI pins and extract the code used by Neweer. Fortunately, there is a handy board called RF Nano. It is an Arduino Nano and an NRF24. It adopts the Arduino Nano form factor, so it is possible to write a proof-of-concept remote control on an all-in-one module.You can find the result As GitHub Gist, You should be curious.

We have met Tom several times before, especially in his work at BadgeLife in Europe. As part of it, he put a lot of effort into bringing browser-based WebUSB and WebSerial development into his work.

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