Electronics

Rainbowduino LED Driver Platform - Atmega328

★★★★4.3·19 ratings

The Rainbowduino board (V3.0) is an Arduino compatible controller board with professional multiplexed LED driver. It can drive a 8x8 RGB Led Matrix or a 4x4x4 RGB LED Cube in common Anode mode. Rainbowduino v3.0 uses two MY9221 chips which is a 12-channels (R/G/B x 4) constant current Adaptive Pulse Density Modulation(APDM). Rainbowduino v3.0 has provisions for cascading more such boards with I2C interface.Rainbowduino v3.0 is flashed with Arduino boot-loader and this makes it easy to program sketches using Arduino IDE. Unlike other LED drivers, this comes with a USB to UART (FT232RL) inbuilt for programming the sketches.FeaturesProvides 2 x 16 pin header for connecting multiplexed LEDsConstant current(20.8mA) LEDs driver.Can drive 4x4x4 RGB LED Cube or 8x8 RGB LED Matrix (i.e 192 LED)Built in USB to UART chip (FT232RL)Built in 5V / 1 Ampere voltage regulatorCan be driven directly via USB cable (No external power adapter needed)

ASIN: B0068JYK0I
Embedding: CLIP ViT-L/14 · 768d
Distance metric: cosine
Doc fetch: 1mscache hitGET /v2/namespaces/amazon-products/documents/B0068JYK0I
Similar query: 19msnearest_to_id → /query

Doc fetch goes through Layer's Aerospike pull-through cache; cache hit served the row without touching turbopuffer. The similar query asks Layer for nearest neighbors of the stored product vector — queries don't go through the doc cache, so no cache header is set.

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