Im wondering if it is possible to record the data transmission of 2 devices communicating with eachother IE ds communication with pokewalker over IR
i want to record the outputs of both seperatly but on some sort of time interval so i can analyze the signal and figure out how the devices communicate like handshakes and such
is there any way to reasonably do this?
Possibly loop that constantly reads 2 Ir recevers and sends that data straight to serial com or something
anybody have ideas or suggestions?
Im not quite sure but it might work if i figure out how to capture the IR light and make it 1s and 0s. I was thinking an LRD ( light receving diode ) hooked up to a transistor
if i figure out how to capture the IR light and make it 1s and 0s. I was thinking an LRD ( light receving diode ) hooked up to a transistor
That is likely to be unsuccessfully for any range over a foot or so as I would imagine it uses modulated IR light. To receive that you need a tuned amplifier like to ones you find in chips like the TSOP2138.
the range on the pokewalker is extremely limited as in <5 inches the plan is to put the 2 recevers close and facing each device so it will capture what each device sends to the other and then do that multiple times and try to decode how the devices communicate and the protocol and hope that it isent encrypted (unlikly) i have an IR camera and when i watch the devices communicate i can see flashes of light and because of the pathetically weak signal it is highly unlikly to have modulated light, i will however try the logic analyzer
because of the pathetically weak signal it is highly unlikly to have modulated light,
That doesn't follow, in fact it is more likely that a modulated signal will show weak than an un modulated one because it is only on for half the time.
If you look at the work people have done with IR remote controllers you will get an idea of what you need to do. Basically you have to record the time of pulse duration and the spaces between and then output it serially when you have filled the buffer. A photo diode or transistor will do, make sure you have the pull up in the collector not the emitter as you are not wanting proportionality but pulses.
I may be thinking of something different, modulation as in on and offs?, @weardo can you save the file in some format that can be reproduced,
How do people reproduce the pulses in the same pattern? And how should this type of informaton be saved? That can be reproduced? Like copy pasting is an ok solution from the serial window or what ever