I had this idea of building my own bicycle lighting system totally personalized, the lights would have the exact lighting ...

Description: $2 for pcb Prototype, for more information visit: Download the codes here Arduino simple shield potentiometer ...

LED face masks make claims to rejuvenate your skin, clear acne, reduce wrinkles and more - using just the power of light. Heavily promoted by celebrity endorsements and social media influencers - and ...

In Fig 1, the junction of the resistive divider connects to a bridge rectifier comprising diodes D 1 and D 2, and the LEDs D 3 and D 4. An N-channel JFET, Q 1, is the load for the bridge. The JFET ...