Round and round and round they go! 8 ultra bright smart RGB LED are arranged in a circle with 32mm outer diameter. The rings are 'chainable' - connect the output pin (DO) of one to the input pin (DI) of another. Use only one microcontroller pin to control as many as you can chain together! Each LED is addressable as the driver chip is inside the LED. Each one has ~18mA constant current drive so the color will be very consistent even if the voltage varies, and no external choke resistors are required making the design slim. Power the whole thing with 5VDC and you're ready to rock.
There is a single data line with a very timing-specific protocol. Since the protocol is very sensitive to timing, it requires a real-time microconroller such as an AVR, Arduino, PIC, mbed, etc. It cannot be used with a Linux-based microcomputer or interpreted microcontroller such as the netduino or Basic Stamp
Comes as a single ring with 8 individually addressable RGB LEDs assembled and tested.
- Outer diameter: 32mm
- Inner diameter: 18mm
- 3mm thick
- Weight: 3g