Porting to other channels

[dkisselev]

Hi Andrey,

I'm wondering how you reverse-engineered the protocol to get the outlet code sequences for the channel F modules that you have.

I'm looking at getting a set of the same controllers and would like to figure out the protocol for whatever channel I end up receiving. I'd be happy to PR the code back to your repository once I get it figured out.

Thanks!

[andreyk0]

I happen to have a logic analyzer ( https://www.saleae.com/ ), so it was pretty straightforward to get the timing sequences. If I didn't have it, I'd probably attempt to build a primitive version of it using arduino itself, feeding pulses to 'hardware interrupt'-enabled pin (e.g. INT0) and capturing relative time offsets in memory, to be dumped over serial. I vaguely remember someone's blog post mentioned something like that, so it's definitely possible but fiddly.

[dkisselev]

I had the feeling you would have used a saleae :+1:

I don't have one, but I did end up finding this other project where they plugged the receiver output into an audio port and use Audacity to record the bitstream:

https://github.com/charleswolfe/lights

Thanks, I'll post my codes if I get around to generating them.

[dkisselev]

So I got my outlets and RF units in today, got everything up and running and the codes measured. I'm going to be using a Raspberry pi for control instead of an Arduino, but I did use an Arduino to test everything and got the codes for Channel D:

// Channel 'D'
static const uint16_t woods_remote_outlet_codes[NUM_CODES] = {
  /* code1on  */ 0B0110100010000001,
  /* code1off */ 0B0110100001000001,

  /* code2on  */ 0B0110100000100001,
  /* code2off */ 0B0110100000010001,

  /* code3on  */ 0B0110100100000001,
  /* code3off */ 0B0110101000000001
};

The library doesn't currently have a way to switch between channels, so that might be an option to work in, for testing I just commented out the Channel F section. (I'll write the proper switching code in if I end up using the Arduino, but not for now)

Mine was also a 315mhz module, which contradicts with the repo title, but I've seen people that have both. The exact frequency is specified in the paper manual that comes in the Woods package.

[andreyk0]

Cool, thanks! Glad you've got it working. Sorry, I've been offline for a while. I'll get your codes in when I have a chance.

[andreyk0]

Finally got a chance to take a look, re-organized lib for multi-channel support and included your codes, thanks!