Adafruit
75mm Bars - 12V Digital RGB LED Pixels (Strand of 21) [WS2801]
Digitally-controllable RGB LED pixel bars using WS2801 driver chips. Each 75mm plastic PVC bar contains 3× 5050 RGB LEDs and a controller chip, epoxy-flooded...
Digitally-controllable RGB LED pixel bars using WS2801 driver chips. Each 75mm plastic PVC bar contains 3× 5050 RGB LEDs and a controller chip, epoxy-flooded for waterproof outdoor use. Sold as a strand of 21 pixels — ideal for building large RGB 7-segment displays.
The pixels connect via a 4-conductor cable (+12V DC, ground, data, and clock). Data shifts from one pixel to the next, so strands can be cut or extended as needed. Each pixel is individually addressable with 24-bit colour (8-bit PWM per channel). Multiple strands can be daisy-chained using the JST SM 3-pin connectors.
Key Features
- 21 Pixels Per Strand – 75mm bar format with 3× 5050 RGB LEDs each
- WS2801 Controller – 24-bit colour, individually addressable
- Waterproof – Epoxy-flooded PVC enclosure
- 12V DC – Constant-current driven for even colour throughout
- Chainable – JST SM connectors for extending strands
- Mounting Options – Flanges with 4mm holes and adhesive foam tape
- 120° Beam Width – ~4000mcd total brightness per pixel
Specifications
- LEDs Per Pixel – 3× 5050 RGB (controlled as one unit)
- Pixel Size – 75mm bar
- Voltage – 12V DC
- Interface – 2-wire (data + clock), any two digital pins
- Connectors – JST SM 3-pin (data), separate power wires
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- PWM
- Pulse Width Modulation is a way for a digital pin to simulate variable output power by switching on and off very quickly. It matters for controlling things like LED brightness, motor speed, or servo-style signals from a microcontroller pin.
- RGB
- Short for red, green and blue, usually referring to an LED that can mix those three colours. It matters because controlling an RGB LED teaches how separate outputs combine to create different colours.
- Terminal block
- A connector used to join wires together in a neat, removable, or serviceable way. For this product, it helps split one power input into several outputs without soldering.
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