Store temperature and humidity sensor readings in a text file on an SD card connected to NodeMCU for later review.
A step-by-step guide to setting up the Arduino IDE for NodeMCU boards, from installing the board package to your first Blink test.
Use nearby Wi-Fi network scanning and a cloud geolocation service to estimate a geographic location with NodeMCU, no GPS module required.
Build a soil moisture measurement system with a NodeMCU board and display the result on an LCD screen, with calibration tips for better accuracy.