This is a device which can monitor running track via a GPS module and store data to a SD card. And then parse the data later from a app.

This is a project that uses SHT30 to get the current temperature and humidity. And then displays it on a no-chip embeded LCD.

Read out analog value from IR distance sensor and show the transferred distance up on your phone as well as the OLED by electron and IFTTT.

Uses GP-20U7 GPS Receiver Plots location on Google Maps