R503 do'nt scan fingerprints

[remiasz]

Fingerprint sensor R503 do not scan finger. I use KC868-A16 with ESPHome.
Sensor is connected to HT1/2 port as Uart. I can control aura led but I get only "No touch sensing" message.
"Wakeup" signal connected to HT3 all time is OFF. When I send command to enroll "Wakeup" goes to ON but sensor dont scan any finger.
Can anyone help?
   

[admin]

HT1/2 are 1-wire port, connect with 1-wire sensor, such as DS18B20. Because it have pull up resistance on pcb. if you want use as UART, need remove it.

[remiasz]

UART on HT1/2 is working. I can communicate with R503 and control aura led.
What pins can I use on UART if not HT1/2?

I used HT1/2 as UART sooner with RFID reader and it was worked.

[admin]

actually KC868-A16 no free GPIOs.

[remiasz]

You were right. I connected R503 to S3 Super Mini module and it started reading fingerprints. Pulling to 3V disrupts UART operation?
Thanks for advise

[admin]

Pulling to 3V disrupts UART operation? Yes