These are our own individually-addressable RGB LED rings. They are connected and driven the same way as s.

Connections:

• DI - Data In from microcontroller
• 5V - 5 V power
• GND - to Ground
• DO - Data Out, to chain to next set of LEDs' DI connection

Connections are made to 2.54 mm / 0.1" pitch solder pads. Care should be taken not to support the LED ring from the solder pads.

Inside diameter approximately 72 mm, outside diameter approximately 86 mm. There are four 2 mm diameter mounting holes in the ring spaced at 90° intervals on approximately 83 mm centres.