Adafruit NeoPixel: Difference between revisions
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[[image:GEMMA-NeoPixel-wiring.jpg|thumb|600px|none|Gemma - NexPixel wiring (improvised)]] | |||
Revision as of 20:28, 27 August 2019
Introduction
In this article we describe the Flora RGB Smart NeoPixel version 2
See also:
The pixel
Main characteristics:
- 12.5mm diameter
- 2.5mm total thickness
- 800 KHz speed protocol
- Chainable design, meaning that you can connect several of these to one pin and chain them
- 5-9VDC power (can run at 3.5V but color will be dimmed), constant current 18.5mA per LED (~55mA max total per pixel)
Hooking up a NeoPixel
According to Hook up alligator clips (retrieved Aug 2019), a NeoPixel must be connected with three wires to a FLORA-type board. Depending on the board, the wiring is bit different. E.g. on a GEMMA, the signal must be wired from A1.
| Board | NeoPixel |
|---|---|
| VOUT
Power output |
+ |
| GND
Grounding |
- |
| D1 / ~A0
General Purpose Input Ouput |
↑ (arrow pointing towards the inside) |
| Board | NeoPixel |
|---|---|
| VOUT | + |
| GND | - |
| A1
General Purpose Input Ouput |
↑ (arrow pointing towards the inside) |
MakeCode example
Programming a strand of pixels
This also works with a single pixel...
Links
Official documentation (read this)