16 RGB Rainbow LED Ring Ultrasonic at a cost of decreased

at a cost of decreased precision

enables adaptive battery power and act as energy harvester for in-field charging

Smart Home

setup and diagnose the modems

Support Bluetooth serial data transmission

16 RGB Rainbow LED Ring Ultrasonic at a cost of decreased16 RGB Rainbow LED Ring 16 RGB Rainbow LED Ring is a kind of LED rings with 16 ultra bright RGB LED beads placed on a circle PCB panel. The PCB panel is not bendable. It is solid. After being charged, it becomes a magic ring with rainbow colour. It is programmable. You can make a program and control the brightness and movement of light. We have successfully make it realize effects like rainbow colour gradient and colour rotate. With your clever