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ESP8266 with Rc522 RFID reader wifi problem

PostPosted: Fri Sep 09, 2022 2:49 am
by MartinBrauer86
Dear Commmunity!

i just configured an ESP8266 on WemosD1R2 board with an RC522 RFID reader. The board is connected to a WPA2 Enterprise wifi. I noticed that the wlan connection is weak, the httpclient cannot connect most of the time. I tried to ping the device, and got a lot of loss, every second ping was lost. After disconnected the RFID-s 3v3 pin, the wlan connection is fast, and zero ping loss. The RFID reader works fine when its connected. The connection is based on this tutorial: https://diyi0t.com/rfid-sensor-tutorial-for-arduino-and-esp8266/. Anybody else got wlan problems when RFID is connected? Thank you!

Re: ESP8266 with Rc522 RFID reader wifi problem

PostPosted: Sat Sep 10, 2022 10:55 am
by rooppoorali
According to this thread https://arduino.stackexchange.com/quest ... fid-reader the setup may disfunction due to power shortage.

Re: ESP8266 with Rc522 RFID reader wifi problem

PostPosted: Sat Sep 10, 2022 11:45 am
by MartinBrauer86
rooppoorali wrote:According to this thread https://arduino.stackexchange.com/quest ... fid-reader the setup may disfunction due to power shortage.

Thank you for the help, i try it with a buck converter to directly give 3.3V to the reader from the 12V source.