It was taken a part, many years ago : )
1.8 RF remote control for Tony Hawk (toy, skateboard).
This is here because the remote uses a similar encoding, such as in most proportional controls.
In the middle, you will not find anything interesting. The encoder works directly with 27MHz or 49MHz transmitter.
Instead of variable resistors, under the control knobs, we have 7 position switches (3-0-3) that transmit binary data about handle position to the encoder. The latter, taking into account the number of additional capacitors and resistors working with these switches, is a conventional micro controller that can be programmed through a bus that is perfectly indicated on the back of the small, MC board.
Another interesting thing is that this remote transmits commands non-stop, to infinity. No sleep or anything else. That mean, the batteries will be drained no matter what. The good thing is that we can read the init seq (in txt file).
* These were settings to interpret the sequence, as a Manchester code. This helps and eliminates routine work.
* The picture shows width / period / accuracy of pulses inside the package (burst).
Encoding, 16 bit. First 6 bit are a key (never change), and DATA is the rest 10bit.
0.662, 0b100000 0010110011
0.672, 0b100000 0010110011
0.672, 0b100000 0010110011
0.682, 0b100000 0010110011
0.692, 0b100000 0110101111
0.703, 0b100000 0110101111
0.713, 0b100000 0110101111
0.723, 0b100000 0010110011
0.733, 0b100000 0010110011
0.743, 0b100000 0010110011
0.764, 0b100000 0010101011
0.774, 0b100000 0010110011
0.784, 0b100000 0010110011
0.794, 0b100000 0010100111
0.804, 0b100000 0010100111
0.815, 0b100000 0010100111
0.845, 0b100000 0010110011
0.855, 0b100000 0010110011
0.866, 0b100000 0010110011
0.692, 0b100000 0110101111
0.703, 0b100000 0110101111
0.713, 0b100000 0110101111
0.723, 0b100000 0010110011
0.733, 0b100000 0010110011
0.743, 0b100000 0010110011
0.764, 0b100000 0010101011
0.774, 0b100000 0010110011
0.784, 0b100000 0010110011
0.794, 0b100000 0010100111
0.804, 0b100000 0010100111
0.815, 0b100000 0010100111
0.845, 0b100000 0010110011
0.855, 0b100000 0010110011
0.866, 0b100000 0010110011
The file shows the encoding data saved for future analysis.
Enjoy.
*** Any inaccuracies on this page will be corrected, if you let me know ( highlighted :) ***