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mcauser / micropython-hz1050

MicroPython driver for HZ-1050 UART and Wiegand 125Khz RFID Reader
MIT License
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Invalid second read #2

Open Filip-Konkowski opened 3 years ago

Filip-Konkowski commented 3 years ago

When I place a tag it will read twice. The first read is correct, the second is not. This one is the blue chip Code: 1016577, Facility: 15, Card: 33537 Code: -1928363263, Facility: -29425, Card: 33537

This one is the card that comes with the rfid module Code: 15337849, Facility: 234, Card: 2425 Code: -1695938183, Facility: -25878, Card: 2425

PXL_20210210_064836871

RFID module is connected directly to 3.3V/GND and RX (in my case pin 25 on tinyPico).

mcauser commented 3 years ago

Possibly voltage related. I've been running mine at 5V through a level shifter to a 3V3 ESP32.

I remember reading somewhere once that reads are a little inconsistent at < 4V. If you run it at 5V, you get more reliable reads and a greater range.