Weigand data floods CSV file with 1 and 0

[ll3N1GmAll]

The R90 reader is constantly "receiving" data that is all 1 and 0. It floods in non-stop no matter what is or isnt around. When HF cards are placed next to it, the reader does not see anything other than the random length 1 and 0 entries. When no cards are anywhere around, it still shows massive numbers of random length entries flooding in from 1 numeral in length to dozens or over a hundred numerals in length. This does not cease no matter what is or is not around. Is the code still functional? I see that http://abyz.co.uk/rpi/pigpio/examples.html no longer appears to have the weigand code available. In fact, that entire domain appears to not be operational any longer.

[thekaibosh]

This happened to me initially as well. The problem was the reader and the pi didn't have mutual ground. I had the reader plugged into a 12v power supply, and the pi was on a separate usbc power supply. Once I got a buck converter and powered the pi through the gpio, all that noise went away

[ll3N1GmAll]

This happened to me initially as well. The problem was the reader and the pi didn't have mutual ground. I had the reader plugged into a 12v power supply, and the pi was on a separate usbc power supply. Once I got a buck converter and powered the pi through the gpio, all that noise went away

Thanks for the advice. I have the pi powered via GPIO now instead of being connected via USB port. I have had a buck converter in the circuit since the beginning. However, I am still getting this same noise. No other card reads come through at all. All of this (pi and reader) is powered via 2 18650 batteries. I'm not sure why this is still failing in this manner.