The Ultimate Arduino Challenge

Congratulations to the Winners of The Ultimate Arduino Challenge! The Ultimate Arduino Challenge is a global contest for professional engineers. Winners compete for the "ultimate" bragging rights and amazing prizes including a trip to Italy! Participants were given the chance to create the best product or project using Arduino hardware. Thank you to our sponsors and all the participants for making the first Ultimate Arduino Challenge such a success!

See 2019 winners >

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