This is a detailed walk through of reverse engineering the signals generated by a 27 MHz radio controller unit for a radio control truck. An oscilloscope is used.
00:20 How we know it is a 27MHz controller and not one in the GigaHertz range.
00:50 Connecting the transmitter to the oscilloscope
01:25 Mains Hum 50Hz
01:45 Turn the unit on and starting to investigate
02:00 Carrier wave
02:20 Trying forward
02:43 Using high pass filter (capacitor and resistor) to eliminate 50Hz Mains hum interference
03:42 Continued investigation
05:01 Signal for forward
05:36 Signal for reverse
05:47 Investigation of turning signals
06:49 Duty cycle for driving straight
07:24 Duty cycle for turn left
08:10 Duty cycle for right
08:16 Summary
08:55 The music in the machine analogy
10:04 Building blocks for a transmitter

свернуть