Fighting fire ... use IR to, well, detect fire. This fire bot has three of these flame sensors across the front that output digital data to what has got to be the world’s smallest Arduino ...

If you are interested in learning more about training robots using machine learning techniques and technologies you might be interested in a new Arduino ... or Light Detection and Ranging, is ...

which despite the customizations to the bootloader is still compatible with using the standard Arduino IDE. You can take it out of the robot and use it standalone. If you were making one yourself ...