Tag Archives: SAM4S16

Novi is a 4-in-1 DIY home security system


Say goodbye to contracts, monthly fees and false alarms.


Did you know that four burglaries occur every minute in the United States alone? That’s a startling one every 15 seconds. The good news is that most convicted burglars (90%) claim they want to avoid homes with alarm systems, saying that if they did encounter an alarm, they would abandon the attack. However, the bad news is that nearly two-thirds of homeowners fail to turn it on at all times. And, when it comes to security, many are often faced with expensive systems and pricey monitoring fees. Understandably so.

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However, one Provo, Utah-based startup is looking to change that with their new IoT solution. Novi Security is a 4-in-1 DIY security system that’s making it increasingly easier for homeowners to install small detectors throughout their house that can notify them of any motion or smoke — all without the need of contracts and monthly costs!

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The kit is comprised of a base station and sensors, and are equipped with an ATmega128 radio and an Atmel | SMART SAM4S processor. The battery-powered sensors are simply affixed to the ceiling and boast an HD camera, motion and smoke detectors, and siren. This allows the system to provide homeowners a peace of mind by sending a series of three photos right to their mobile device, while immediately emitting a siren if smoke or motion are recognized while away.

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In the event that this occurs, the alarm will sound, the monitor will relay the images to the base station (plugged directly into a router), and the base station will transmit the photos over to an accompanying app. Once the alert is received on the smartphone, the user will then have the option to call for help, check in at home, arm/disarm, as well as request more pictures for greater clarity.

A PIR motion activated camera with Atmel & ARM

A PIR motion activated camera is typically deployed as a security measure to detect, record and identify an unauthorized intruder. Key design considerations of such a device include false alarm immunity, extended battery life, low BOM cost and small form factor.

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A number of Atmel-based components can be used to build a PIR motion activated camera that follows the above-mentioned design requirements. Firstly, Atmel’s ARM-based (Cortex-M4) SAM4S16 is capable of achieving fast image capture along with compression, all while transferring the data back to the control center – thereby facilitating rapid visual verification and response.

“Perhaps most importantly, Atmel’s SAM4S16 offers low power operation to extend battery life, with embedded peripherals running independently from the CPU,” an Atmel engineering rep told Bits & Pieces.

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“So that means PIR sensing and image capturing without CPU load. More specifically, single snapshot mode =>30uA/day -10 years of battery life (3V, 2800mAh Li-Ion).”

Similarly, Atmel’s 86RF212B/233RF transceiver offers low-power operation with Sleep Mode down to 0.02uA.

“Developers can also save on total BOM cost and reduce design form factor, as Atmel’s SAM4S16 is capable of independently handling image encoding and processing with software,” the engineering rep continued.  “In addition, the Atmel-based design (SAM4S16) allows the removal of one external amplifier interfacing PIR Sensor via the embedded ADC with gain stage. Plus, the SAM4S16 directly connects to any CMOSImageSensor, all while providing color picture capture at QVGA resolution.”

On the software side, developers have easy access to the SAM4S evaluation kit (Xplained Pro), along with Atmel Studio, Gallery and free libraries, including FreeRTOS, TCP/IP Stacks and 802.15.4 Stacks.

Interested in learning more about Atmel’s ARM-powered SAM4S16? Be sure to check out the official SAM4S16 page here.