Driving alphanumeric display from Raspberry Pi


#1

Looking at https://shop.pimoroni.com/products/quad-alphanumeric-display-0-54-digits-w-i2c-backpack?variant=804921845

Where does the second + connect to? Do both + + connect to 3v3?

I found an Adafruit .py file to drive a clock on 7 segment display, where can I find one to do the same on a 14 segment display?

Thank you.


#2

See the reverse picture here: https://cdn.shopify.com/s/files/1/0174/1800/products/1912-00_1024x1024.jpg?v=1403270286

The second pin labelled “Vi2c” determines the signal voltage for the i2c communications. This allows you to power the unit with say a 5V supply, but set the logic level to 3v3 (ideal for the Raspberry Pi!).


#3

That’s good, but where do I find the 14-segment driver please?

Thank you.


#4

Adafruit have a tutorial for driving this display using an Arduino - that should get you on the right track for making it work with Raspberry Pi :-)