314: IoT Battery-less Wearable Device

In the fast-paced world of technology, people were always looking for sustainable solutions. Using batteries in Internet of Things (IoT) devices caused big environmental problems, like pollution and resource depletion. We had a new idea: a wearable device that doesn’t need batteries. Instead, it uses energy from the sun and heat from the body to work.

We wanted to make a healthcare device to be worn on the forearm. The device could monitor body temperature, heartbeat, and movement—all displayed on a phone. 

We designed a system that could harvest energy from the sun and body heat to convert it into usable electrical energy that could power our device. To detect parameters of the human body, we used sensors which relied on this electrical energy to work. These sensors were then processed by a device that functioned like a human brain. We used a microcontroller to organize and control the various components. We assembled all the parts in a way that could be worn on your forearm that was aesthetically pleasing and ensured successful operation. We were driven by the need for sustainable IoT technologies. By harnessing solar and thermal energy, our device offers a renewable power source. Our motivation stemmed from a desire to create a greener future for the next generations.