In the “Lighting Up the LED Using Body Heat” project, I’m excited to show you how we can turn body heat into electricity using peltier. By harnessing the Thermoelectric Cooler Peltier SP1848 and the Energy Harvester LTC3108 from CJMCU, we can capture the thermal energy difference between your body and the surrounding environment. This simple yet effective setup illustrates the potential for sustainable energy solutions, particularly in wearable technology and small-scale electronics.
The magic behind this project lies in the Seebeck effect. Which allows us to generate an electrical voltage from a temperature difference. The Thermoelectric Cooler Peltier SP1848 module is the key component here. When place it on your skin, it uses the warmth from your hands on the other side. While the other side stays cooler due to using alcohol. This temperature difference causes electrons to move within the module, creating a small electrical voltage. It’s a fascinating way to tap into the energy that’s all around us. Especially from something as constant as body heat.
To turn this small voltage into something powerful enough to light an LED, we use the Energy Harvester LTC3108 module. This component is a highly efficient boost converter, capable of operating with very low input voltages. By connecting the Peltier module to the LTC3108, we’re able to boost the generated voltage to a level that’s suitable for powering small devices like LEDs. This setup not only demonstrates the converting body heat into electricity. It also opens up possibilities for creating practical, sustainable power sources for low-energy applications.
Components:
- Energy Harvester LTC3108
- TEG Peltier SP1848
- 752s Transformer
- Third Hand with Magnifying Glass Tool
- Soldering Iron
- Solder Flux
- Multi Screw Set
Having the right tools makes everything easier. A Third Hand with Magnifying Glass helps hold small parts steady while you work, making soldering more precise. A Soldering Iron is essential for connecting wires, and using good Soldering Lead ensures strong, reliable connections. You’ll also need a Multi Screw Set for assembling everything securely. These tools will help you put the project together quickly and make sure it works well.
Connections:
Notes:
- Ensure a sufficient temperature difference across the Peltier module.
- The Coilcraft 752S Transformer is used in conjunction with the LTC3108 module. It steps up the small voltage generated by the Peltier module.
- Identifying the Hot and Cold Sides: The hot side of TEG module usually has labels, markings, or writing on it. Place against the heat source (e.g., skin). The cold side is typically blank or without any labels. Keep this side cool for effective energy generation.
