Puck advertise data when ibeacons with specific uuid detected

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•

Gordon
You can use NRF.findDevices to check for the beacons advertising around you can can then do things based on that: http://www.espruino.com/Reference#l_NRF_findDevices

Eg.
```
function checkPresence() {
  NRF.findDevices(function(devices) {
    var found = false;
    for (var dev in devices) {
      if (dev.name == "whatever") found = true;
    }
    if (found) start advertising
    else stop advertising;
  }, 1000); // scan for 1 second
}
setInterval(checkPresence, 5*60000); // check once every 5 minutes
```
However actually checking for surrounding beacons takes a lot of power, so you don't want to do it often, or for long. The example above does 1 second every 5 minutes, which is still quite a lot. If you were doing this to save power you're probably best off not bothering and just advertising regardless.

•

Pzr0 in reply to @Gordon

Thanks for your responce, but this is

Uncaught Error: Field or method "name" does not already exist, and can't create it on Number
 at line 5 col 14
      if (dev.name == "DiamondBeacon") found = true;

and when I use the simple example no name is displayed.. I want to scan with id(Mac address).

NRF.findDevices(print)

Puck advertise data when ibeacons with specific uuid detected

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