Led Strip

Digital RGBW Led strip

Pytobot has 72 Led's included in the hardware. The Led's give a more visible image of what is happening behind the software of the car.

Calculation

Emitting color

Wavelength(nm)

Luminous intensity(mcd)

Current(mA)

Voltage(V)

Red

620-630

550-700

20

1.8-2.2

Green

515-530

1100-1400

20

3.0-3.2

Blue

465-475

200-400

20

3.2-3.4

The max rating has assumed all the led's are on full width, usually the actual current for full color design is about 1/3 to 1/2 the max current.

72(20+20+20)=4320mA72*(20+20+20)=4320mA
4320mA/2=2160mA4320mA/2=2160mA

Code

import board
import neopixel
pixel_pin = board.D18
num_pixels = 10
ORDER = neopixel.RGB
pixels = neopixel.NeoPixel(pixel_pin, num_pixels, brightness=0.2, auto_write=True,
pixel_order=ORDER)
while True:
pixels.fill((255, 255, 255)) ##White
time.sleep(1)

Datasheet