NODEMCU LUA Driving a M5450B7 LED Display Driver IC

The M5450B7 is a 40 Pin DIP LED display driver IC.It looks rather a beast, but it is relatively easy to control and program.There are 34 output pins that can have a LED connected to each one. The device sinks current rather than supplies it so the cathode of the LED needs to be connected to a pin an...
By: JohnL142

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