Hello all. I am tying to decode an IR toy in order to 'expand' it's uses. The toy uses a wand (ir transmitter) and a 'magic egg' (ir receiver). I used a logic probe to peek on the signals transmitted from the wand and then tried to lookup the start bit, pause, logic 1/0 bit duration in order to figure out the protocol.
That didn't work. A ~6ms start bit and then ~0.6ms pause bit combination doesn't seem to be a documented protocol. Changing the settings in the logic probe software I tried to see if I could decode it as serial transmission and see how close I could get at getting consinstent data. That was easier that I though in the first place, since setting the decoder at 4800, true output it seems it worked:
The data output is pretty consistent actually, besides the framing error reported as 0. Maybe this is used as an interrupt to wake up the receiver. I got the same results while probing the receiver toy and with a breadboarded IR decoder at 38KHz. The 08M2 can read the data quite fine running at 16MHz, to avoid data overlaps as the data is send as a burst of three identical transmissions.
Has anyone seen anything like that in a Chinese toy? Using serial data instead of IR codes (Sony, NEC, etc)? Anyone can identify the IR protocol maybe?
Thank you.
~stelios
That didn't work. A ~6ms start bit and then ~0.6ms pause bit combination doesn't seem to be a documented protocol. Changing the settings in the logic probe software I tried to see if I could decode it as serial transmission and see how close I could get at getting consinstent data. That was easier that I though in the first place, since setting the decoder at 4800, true output it seems it worked:
The data output is pretty consistent actually, besides the framing error reported as 0. Maybe this is used as an interrupt to wake up the receiver. I got the same results while probing the receiver toy and with a breadboarded IR decoder at 38KHz. The 08M2 can read the data quite fine running at 16MHz, to avoid data overlaps as the data is send as a burst of three identical transmissions.
Has anyone seen anything like that in a Chinese toy? Using serial data instead of IR codes (Sony, NEC, etc)? Anyone can identify the IR protocol maybe?
Thank you.
~stelios