- Fri Jun 07, 2019 4:00 pm #204936
I'm trying to use four ID-3LA RFID readers on one Arduino Mega. I'm using small, glass RFID tags (kind of what are inserted for pet identification). I'm using pins 52 & 52 for Rx4, Tx4 (software serial) as well as the other built-in serial ports. I made antennas by hand. Each antenna and reader works very well stand alone. However, once I try hooking up more than two readers to my Arduino the antennas become very insensitive and can't pick up anything even when they previously were very responsive. Right now I have them all connected in parallel on one breadboard. I had trouble finding the 5V current, so is it possible that there isn't enough current to power all four? I don't think it's an interference problem. Please help! Thanks!