Here’s a reverse engineering project that is instructive re: how to parse out several channels of IR commands issued to control an indoor helicopter.
After seeing all of the Syma 107′s hacked I thought I would try to decode the IR protocol on my Propel ExecuHeli. Here are my findings.
For accuracy purposes I decided to find the signal on the controller board. I traced the IR LEDs through a transistor to pin 6 of the micro.
Unfortunately, there are no markings of any kind on the micro. It looks like it was manufactured without them.
Before digging into the protocol I thought I would have a look at what frequency the data is modulated at for the three different channels….
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
No comments yet.
Sorry, the comment form is closed at this time.