spidriver-7segmentdisplay

Use max7219 seven segment displays with Excamera Labs SPIDriver

For SPIdriver specific help or ordering information:

https://github.com/jamesbowman/spidriver • https://www.spidriver.com

pip3 install spidriver

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Connections

• SPIdriver 5V -> Display VCC
• SPIdriver GND -> Display GND
• SPIdriver MOSI -> Display Data In (DIN/DI)
• SPIdriver CS -> Display CS
• SPIdriver SCK -> Display CLK

If you want to daisy-chain multiple displays, use standard Dupont cables from the output ports on the first display to the corresponding inputs on the next (and so on).

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To test basic display output:

python3 max7219.py

Or use in Python 3.x like:

from max7219 import MAX7219
SPIDRIVER_PORT = "/dev/cu.usbserial-DK0EI9RZ"
NUMBER_OF_DISPLAYS = 2
NOOP = 0x00
disp = MAX7219(SPIDRIVER_PORT, intensity=7) # intensity is the brightness level, from 0-15

# Writes "1" to position 7 (far left) on the first (0) display:
disp.write_digit(0, 7, 1)

# Writes "L" to position 1  (far right) on the second (1) display:
disp.write_digit(1, 1, 0x7D)

# Clears the display:
disp.clear()