This is a sketch for checking the signal strength of a WiFi network. Both the current signal and the average strength for an adjustable timespan are displayed.
- an ESP8266 based microcontroller (it has been tested on a WeMos D1 Mini, but a NodeMCU or similar devices should work fine as well)
- an SSD1306 based, 128x32 pixel I2C OLED display (it should be easy to adjust for a SPI based displays or other resolutions)
- a simple potentiometer
- Arduino IDE with ESP8266 support
- Adafruit_SSD1306 library
Change the WiFi credentials in wifi_credentials.h to the appropriate values.
GNU General Public License, Version 2
Christoph Haunschmidt