castroll

Hello, first off I apologize in advance for all the stupid things I can say next (I'm pretty ignorant in this area)


as i understand... the activator loop "emit a little power " over the air , when a transponder it's over it, it use that power to activate itself and use his own battery to send the ID , right? I'm talking about transponder with a single 2032 battery

I'm trying to figure out how i can detect myself that "power" from the loop to activate my own system (don't send anything, just use the loop as trigger)

Can someone help me in the right direction?

howardcano

iTrader: (37)

I don't believe that any lap timing systems for RC cars have loops that emit any energy. The transponders transmit a very short message once every few milliseconds, all the time. The loops only receive, never transmit.

There are plenty of other systems that do send a signal to the transponder. Automated toll systems operate like this.

But don't let that keep you from creating a system that operates as you desire!

castroll

Thanks for your reply, amb tranx 140 works like i said (i'm not sure if it's used for RC) they have an small battery with 3-5 years duration, and they are triggered by the loop itself, i'm trying to understand this technology