I recently purchased Grove - Capacitive Fingerprint Scanner/Sensor.
Like that one: link
I tried connecting it many ways to the ESP board.
VCC-VCC, RX-D2, TX-D3, GND-GND,
VCC-VCC, RX-D3, TX-D2, GND-GND,
VCC-VCC, RX-D5, TX-D6, GND-GND.
VCC-VCC, RX-D6, TX-D5, GND-GND.
I got this output: Wait for response of finger-print sensor 5 seconds infinitely.
Of course after every connection change I updated code to match pins.
VCC-VCC, TX-RX, RX-TX, GND-GND:
I wasn’t able to upload program to the ESP board.
I also tried both 5V and 3.3V.
Sensor is emitting blue light but does not give any response to ESP8266.
I think, that I connected it wrongly.
Also: I modified the connector, because I wasn’t able to connect it to pins on ESP8266. Please see image below.
I’m using this library: link
How should I connect it? Please help me.