[Toby] has an Elinchrom EL-Skyport, which is a wireless flash trigger. He decided to see if he could trigger it using an Arduino, and came up with a nice proof of concept. This little device was not meant to be user serviceable, as can be seen in what [Toby] uncovered while taking it apart. But once he had it disassembled, he cataloged everything inside, and then he awesomely went to the trouble of drawing up a schematic. With that knowledge, he began reverse engineering the SPI protocol used, which almost deserves an article by itself.
It was a long road to get there, but in the end [Toby] built a prototype Arduino shield that houses an nRF24L01+ module. These are very cheap to pick up on eBay. He gives us the details on hooking up the module, though he had to go through extra hoops since he was using the Arduino Leonardo. Still, once you’re up and running, you can make use of one of the existing libraries specifically for this module.
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