Transfer data (WiFi credentials) from your smartphone to an ESP8266 by Pulsing your Smartphone Screen

ESP8266 Screen Set WiFi Credentials

Transfer data (WiFi credentials) from your smartphone to an ESP8266 by Pulsing your Smartphone Screen

To setup your WiFi Credentials put your ESP12F over a Smartphone screen, and let the Black and White Oscillation transmit the information. Note: You need to cover the LDR, in a way no light can enter. The LDR should not touch the screen, it needs stay some millimeters far from the screen.

Items required:

- ESP-12F (and all the basic componentes to make it work)
- Resistor 300k
- LDR 50K-50M Omhs (GL5539)
- Unzip the library ESP8266-screenSetWifi-master (attached in this projet) into your Arduino Library Folder

PS: You can try other variations of resistor values and LDR types. Just make sure the max resistive value of LDR is greater than the pull-down resistor.”

Link