IR Sensor with NodeMCU esp8266 for Object detection using LED and Counter - YouTube
WiFi YouTube subscribers counter ESP8266 API wemos
ESP8266 Interrupts and Timers using Arduino IDE (NodeMCU) | Random Nerd Tutorials
Automating a Geiger Counter with an ESP8266 or ESP32 #Feather #Arduino #ESP32 « Adafruit Industries – Makers, hackers, artists, designers and engineers!
I made a COVID-19 counter with an ESP8266 and an OLED display. It uses WiFi to get JSON objecs from an API, parses them once every 10 minutes and displays the info