Adafruit NeoDriver – I2C NeoPixel Driver Board – Stemma QT
€8,95 /€7,40 excl. VAT
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Description Adafruit NeoDriver - I2C NeoPixel Driver Board - Stemma QT
NeoPixel LEDs (also known as WS2812 / SK6812 family) are an easy way to add addressable RGB lighting with just one GPIO. They are found everywhere on microcontrollers. Some chips or single board computers (SBCs) do not support neopixels. This is due to the precision required when sending data.
Adafruit has their Blinka library which has support for CircuitPython libraries including the NeoPixel library. But without a suitable 'neopixel_write' implementation for that platform, it just doesn't work. Writing the neopixel writer function is not easy for many chips. Fast GPIO and perfect nanosecond timing are essential.
A quick solution is this seesaw-based NeoDriver board. It sends the NeoPixel data via I2C and provides perfect pixel timing on the other end. It board uses an ATtiny1616. This provides enough RAM for a 512-pixel long array. It is not lightning fast because of the I2C communication. But with an 800KHz or 1MHz I2C clock and as long as you don't write the entire strip at once, it's not too bad.
A 5V charge pump has been added to the module, so that you get a clear 3V signal even on 5V boards. The pre-soldered terminal blocks and Stemma QT plugs provide a solderless solution. This way you can easily add NeoPixels to any device with I2C. The default I2C address is 0x60, but by cutting the bottom solder traces you can change this to an address between 0x60-0x67.
Note: Powering NeoPixels requires approximately 10-30mA per pixel of clean 5V DC power, available on the terminal blocks. Or you can connect the 5V directly to the pixels if there are separate red and black power wires. The Stemma QT port cannot supply this current, so an external power supply is necessary!
Features Adafruit NeoDriver
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Type: NeoPixel LED driver (WS2812 / SK6812 family).
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Feature: Allows adding addressable RGB lighting with just one GPIO.
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Compatibility: Works with many microcontrollers, but not all due to timing requirements.
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Basic: Based on seesaw technology.
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Key part: ATtiny1616 for enough RAM (supports 512-pixel long string).
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Communication: Via I2C (speeds of 800KHz or 1MHz).
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Power supply: 5V charge pump for a clear signal, even on 3V boards.
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Connectivity: Pre-soldered terminal blocks and Stemma QT plugs for solderless connection.
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I2C address: Default to 0x60, but adjustable between 0x60-0x67.
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Power Requirements for NeoPixels: Approximately 10-30mA per pixel from 5V DC.
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Note: External power required for the pixels.
- Dimensions: 25,3 x 25,3 x 10,3mm
- Weight: 4,4g
Additional information
| Weight | 0,005 kg |
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