The Ultimate Arduino Challenge

The Ultimate Arduino Challenge is a global contest for professional engineers. Participants are given the chance to create the best product or project using Arduino hardware. Winners compete for "ultimate" bragging rights and amazing prizes including a trip to Italy! Competition begins Tuesday, February 26.

Enter Now >

Brought to you by:

Hearing Rat Laughter

by Rick Francis



Rats laugh but at too high a frequency for humans to hear (~50KHz), an arduino could record and decrease their frequency to our audio range.


mouser microchip arduino