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A $1 IoT node

Although one dollar may not get you much these days, it is enough to make an IoT device using the all-new ATtiny104. Take an IoT lamp, for example. In this case, the tinyAVR sends a signal to AM radio, which is relayed to a receiver hidden beneath the table, triggering the LED light.

A user can then simply turn the light on or off with the ATtiny104. At same time, the signal is transmitted to the Atmel | SMART SAM W25, which links it to the cloud. Once connected, a user can see whether their lamp is on and off.

What’s also nice is that the code running on the device boasts extremely low memory usage — only 700 bytes. With four different power modes, the device consumes minimal energy. This enables its CR2032 battery to last anywhere from six to seven years.

Intrigued? You can see it in action below!

 


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