Tag Archives: antenna

This Arduino-powered baton will tell on you if you hit someone

Nice going, tattletale! Don’t hit someone or else this billy club will tell your mother. 

Moscow-based Maker ::vtol:: and his art-inspired projects have are no stranger to the Atmel Bits & Pieces blog. Whether it’s modding a typewriter to print ASCII selfies or turning air pollution into images, the hacker-artist continues to surprise us with new innovations. Added to the growing list is a police baton equipped with a GSM-module and powered by an Arduino that automatically sends a text message reading “Mom, I hit a man” to your mother whenever it is used to strike someone.


The idea for Antenna was conceived following the latest string of incidents surrounding police brutality. While a number of states, including California, are putting body cameras on cops in hopes of reducing violence and complaints, vtol:: had a something else in mind — a concept that would incorporate “maternity as the last stronghold of human kindness and responsibility.” After all, no matter what age you are, there’s nothing worse than getting reprimanded by mom! And so, the Maker combined this childhood (and adulthood) fear with a connected device to strictly curb any unnecessary cruelty.


Its setup is pretty straightforward: An Arduino is attached to a piezo sensor to detect impact, while a GSM shield handles the SMS messaging. Whether or not it’s practical, it’s still a pretty neat creation to say the least. See it in action below!

Atmel wants to listen to your car stereo

With over 30 years experience in designing broadcast radio platforms, Atmel is a supplier offering IC solutions with maximum performance, flexibility and integration level for the rapidly expanding AM/FM active antenna market.

In-depth know-how and high quality standards (ISO9001 and ISO16949) enable the specific quality and performance requirements of the car radio market.

Specifically, Atmel offers a lineup of highly integrated products with maximum quality level and excellent RF performance. This includes feature-rich and robust AM/FM antenna amplifier ICs boasting numerous advantages over discrete solutions. Indeed, Atmel’s technology can be used in any antenna, whether shark fin, short pole or glass/window antenna.

In addition, current-gen car stereos must be capable of playing digital music from players, memory cards, and Flash drives. And that is why Atmel AVR 32-bit microcontrollers are capable of powering a platform to access, decode, and play music files over  USB.

Various formats are supported, including MP3 and WMA (with AAC available soon), along with ID3 tags, playlist management, and more. As expected, Atmel also provides a complete software library, the AVR UC3 software framework, to help facilitate rapid and easy development.

Additional information about specific Atmel MCUs for car stereos can be found here.