- Availabilty: Directly available from warehouse in Eindhoven
- SKU: 002400
This is an RGB LED ring with SK6812 LEDs. These are soldered on a black circuit board with the connections at the bottom.
The SK6812 LEDs can be individually addressed and can be connected up to 1024 LEDs with a refresh rate of 30 FPS.
Each LED contains a built-in chip and can be controlled with 8-bits per color.
- Number of LEDs: 8
- Input voltage: 5VDC
- Maximum current per LED: ~50mA
- Maximum current ring: ~0.4A
- Circuit board color: Black
- Ring size (outside diameter): 32mm
- Ring size (inside diameter): 16mm
- 5V: +5V input voltage
- Din: Data signal input (signal from an Arduino, RPi, or other SK6812 LED)
- Dout: Output of data signal (signal to another SK6812 LED or not connected if it is the last LED)
- gnd: Ground/min
Various libraries are available for both the Arduino and Raspberry Pi platform.
See the following link for connecting the LED ring to the Arduino platform: Adafruit NeoPixel Überguide .
For more information, see the datasheet under the tab "Downloads".
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The following parts are required to use a product with digital LEDs:
- Power supply
- Development board for controlling the LEDs
- Resistor (470Ω) to limit the current of the data line
- Electrolytic capacitor (1000μF 25V) as buffer for peak currents
- Wires or cables to connect everything
The following parts are optional:
- Breadboard or experiment PCB to connect the components
- Level converter (in case the development board has a signal voltage of 3.3V)
This can have several causes. The most common causes are:
Signal voltage too low
For example, WS2812B LEDs have a signal voltage of 5V. When these are controlled with a voltage of 3.3V (as with ESP32/ESP8266/Raspberry Pi), data may not be properly received at one or more LEDs, resulting in the wrong color. This can be solved by increasing the signal voltage to 5V using a level converter.
Noise on the data pin
The data pin is sensitive to noise. This can be solved by connecting a 470Ω resistor in series between the microcontroller and the data pin of the LEDs.