“This project is a follow-up project of my previous Instructable called IoT RPi LED Message Board. I am a facilitator for a local Girls Who Code club and I wanted a simple yet fun tool to teach students on how to convert from bitmap/binary to decimal and hexadecimal. Please follow Steps 1 and 2 on IoT RPi LED Message Board to configure RPi. We’ll be using the same setup as my previous project except for the new ZeroMQ server code that uses a different max7219 function to draw pixels column by column (or row by row if you rotate the LED matrix 90 degree clockwise.)”