WS2812 pixels (aka NeoPixels by AdaFruit) are connected in series. Control is by pixel number, counting from zero as for a list. WS2812 strips have 3 inputs: +5V, Data and Ground. Power is connected in parallel across the LEDs so you only need one feed up to a couple of hundred pixels or so. Multiple power feeds are allowed, so you could feed power in from both ends of a longer strip. The data feed is directional, serial, and clearly labelled on most strips.
Take your time before buying as there are different chip families with different voltage requirements. Strips come with differing LED densities. I have found 60 LEDs/m a good compromise. Some chip types also require a 4th clock input. Prices cover quite a range!
AdaFruit has some excellent documentation; search for NeoPixel.
I really like Pimoroni's Plasma boards. They are easy to hook up and include buttons for controlling testing, and a 5V logic-shifter output which while not always required, is recommended.
Take your time before buying as there are different chip families with different voltage requirements. Strips come with differing LED densities. I have found 60 LEDs/m a good compromise. Some chip types also require a 4th clock input. Prices cover quite a range!
AdaFruit has some excellent documentation; search for NeoPixel.
I really like Pimoroni's Plasma boards. They are easy to hook up and include buttons for controlling testing, and a 5V logic-shifter output which while not always required, is recommended.
Statistics: Posted by dBerriff — Fri Dec 20, 2024 7:23 pm