Color sensing (as well as detecting empty spaces) settled on IR-based sensors commonly used in line-following robots. You can watch the clock in action in the video embedded below just under the ...

How about building your own visual thermometer for cheap? That’s what [Thomas Fischl] decided to do, using an infrared thermal sensor array (MLX90640) connected through a PIC16LF1455 to a host ...

The sensor measures cookware temperature through ceramic glass improving induction hob precision safety & automation for better cooking control ...