just notes for myself-- https://rcexplorer.se/projects/2013/01/the-tricopter-v2-6hv-delux/ https://howtomechatronics.com/projects/diy-arduino-rc-transmitter/ http://educ8s.tv/diy-art-deco-fm-radio/ https://www.techwalla.com/articles/how-to-build-an-fm-radio-receiver https://www.electronicsforu.com/electronics-projects/simple-fm-receiver