“Breath Parasite” is an idea that to harvest energy from every breath.
For the minimum viable product, I tried to 1) transfer the linear motion to rotation (motion) ; 2) rotate a DC motor to generate electricity which could power a LED (power).
1. Motion: linear motion –> rotation
(photo)
2. Power: electromagnetic induction
Parts: LED*1, switch*1, DC motor*1, 200uf capacitor*1, 22k ohm resistor*1
First, use a multimeter to measure the voltage and ampere by rotating the DC motor. The Voltage is up to 1.2v; but the current is always 0A:
Then, I tried to rotate the motor to power a LED. It works!
But it failed to user motor to charge a 200uf capacitor. Is it because the current is too little?