Arduino controlled DSM2 transmitter: https://youtu.be/5BfRg9CUMYI
https://hobbyking.com/en_us/r617xl-dsm2-x-6ch-receiver-with-long-antenna-and-cppm.html
https://hobbyking.com/en_us/orangerx-rr12rdts-receiver-with-s-link-dsm2-dsmx-compatible.html
https://hobbyking.com/en_us/orangerx-program-box-for-r620x-r1220x-v3-rr12rdts-receivers.html