Burst transmission on power up

[kb1sph]

Hi everyone, I'm new to this forum, just signed up, but I have something I'm trying to figure out if I can do and I couldn't figure out what exactly to search for to see if someone else has done this.

Ok, so here's the scenario...

I have a remote that has an ESP-8266 in it, with light bulbs that have the ESP-32 in it. For now I will not say what the brand is, but some of you may guess.

The remote has a voltage regulator in it with an enable pin and when you press a button it grounds the enable pin powering up the ESP, which then turns on an output pin grounding the enable pin of the regulator to keep it on while it does it's thing and then turns off the output to shut off the regulator.

When the ESP-8266 powers up, it sends some kind of quick burst to the light bulbs without actually having to be connected to your wifi. I know this because there is no setup for the remote to connect it to your wifi.

I want to duplicate this function, but I don't know exactly how it is done. Now, as I plan on trying to make my own remotes that use a similar design so they are now powered on all the time waiting for a button press, I could use an ESP-32 as well, which is why I posted it here, but I'm hoping for a solution that might be able to be used with either chip.

The end outcome would be, power on -> send some kind of burst transmission saying which button was pressed -> power off.

Now, again, I have no idea how to implement this myself yet, but the only option I can think of would be that the remote somehow sends out it's id (serial/mac/something else?) as well as what button was pressed and then any bulbs that have been programmed (as they will have power all the time) to look for that ID will interpret the command.

How is this possible? How could this remote be doing this already without any kind of wifi setup?

Any suggestions would be greatly appreciated.

Thank you!

[ESP_Sprite]

Sounds like ESP-Now. Suggest you look into that.