Important NoteThis entire repo was AI created - including all of the data within. The intent was to A) help me with my personal electronics inventory; and B) see how I could use AI to make that process a bit easier. DO NOT TRUST!
Adafruit NeoPixel RGBW Mini Button PCB (Individual Units)
Details
- Location: Cabinet-1, Bin 33
- Category: Neopixel LEDs
- Part Number: Adafruit 4776
- Size: 9.1mm x 9.1mm x 3.1mm (0.36” x 0.36” x 0.125”)
- Color: RGBW (Red, Green, Blue, White)
- Voltage: 5V DC (can run as low as 3.5V but dimmed)
- Current: 18.5mA per LED (~75mA max total per pixel)
- Quantity: 6 individual PCBs
- Product URL: https://www.adafruit.com/product/4776
- DigiKey URL: https://www.digikey.com/en/products/detail/adafruit-industries-llc/4776/13550158
Description
These are the smallest NeoPixel breakouts available! Each unit is a tiny, bright RGBW pixel on an individual PCB measuring only 9.1mm x 9.1mm. These ultra-bright LEDs have a constant-current driver built right into the LED package using the SK6812 chip.
The NeoPixel is ‘split’ - one half contains the RGB LEDs you know and love, while the other half is a white LED with yellow phosphor. When unlit, it resembles a school bus color. When lit, these are extremely bright and can be controlled with 8-bit PWM per channel (32-bit color overall).
Each PCB has two sets of three pads on the back for easy wire soldering. The pixels are chainable, requiring only one pin/wire to control as many LEDs as desired.
Specifications
- LED Type: SK6812 (RGBW)
- Supply Voltage: 5V DC (3.5V minimum, but dimmed)
- Current per LED: 18.5mA constant current
- Maximum Current: ~75mA per pixel (all four RGBW LEDs at full brightness)
- PWM Frequency: 800 KHz protocol
- Interface: PWM (chainable design)
- Color Depth: 32-bit (24-bit RGB + 8-bit White)
- Dimensions: 9.1mm x 9.1mm x 3.1mm
- Weight: 0.3g per PCB
- Operating Temperature: Standard LED operating range
Image
Applications
- Wearable electronics projects
- Costume and cosplay lighting
- Small decorative lighting installations
- Status indicators with color + white capability
- Miniature art projects
- Jewelry with embedded lighting
- Model lighting (trains, buildings, etc.)
- Interactive displays requiring individual pixel control
Technical Notes
- RGBW Library Required: These require a NeoPixel library with RGBW support, not standard RGB libraries
- Color Mixing: The blue LED element is close to the white phosphor, causing blue light to mix with white
- Power Considerations: Each pixel can draw up to 75mA at full brightness white
- Arduino Limitations: An Arduino can drive up to 350 pixels at 30 FPS before running out of RAM
- Cable Length: Using ribbon cable, pixels can be spaced up to 6” apart before signal degradation
Assembly Notes
- Two sets of three pads on the back for soldering wires
- Chainable design allows daisy-chaining multiple pixels
- Constant current driver provides stable brightness regardless of voltage fluctuations
- Requires 5V power supply for optimal brightness and color accuracy
Purchasing Notes
- Adafruit sells these in packs of 10 for $4.95
- Individual units are not sold separately
- Current inventory: 6 individual PCBs (from opened pack)
Tags
neopixel, rgbw, addressable, mini-button, sk6812, pcb, adafruit, wearable, chainable