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Adafruit Pixie: 3W chainable LED pixel with onboard PIC microcontroller

Brief written by the FOSSWire AI editor from Adafruit Electronics

1 min read Impact: 5/10

Key Takeaway

Adafruit released Pixie, a 3W chainable smart LED with an onboard Microchip PIC microcontroller that handles PWM autonomously after receiving color data at 115200 baud.

Summary

Adafruit's new Pixie LED module delivers 15 times the power of a standard NeoPixel at 3W total output. Each unit contains a Microchip PIC microcontroller that receives color commands via serial at 115200 baud and manages PWM independently. The design supports daisy-chaining with automatic message forwarding, and includes a 1-second timeout as a safety feature against stuck-on states.

How the Pixie differs from NeoPixels

  • Power: 3W total vs. ~0.2W for a standard NeoPixel
  • Microcontroller: Each Pixie contains a dedicated Microchip PIC, not just an LED driver
  • Protocol: Simple serial at 115200 baud, 1 byte per color channel
  • Chaining: Data forwarding between pixels enables shift-register-style daisy chains
  • Safety: Mandatory 1-second keepalive timeout prevents thermal runaway if control signal is lost
  • PWM: Offloaded to the onboard PIC after initial color set

Why it matters

The Pixie fills a gap between low-power addressable LEDs and high-output lighting for makers needing visible output in daylight or larger installations. The simple serial protocol may ease integration with non-AVR platforms compared to timing-critical WS2812-style signals.

Original reference: blog.adafruit.com →