Review – Maxim MAX7219 LED Display Driver IC using arduino

Today we are going to examine the Maxim MAX7219 LED display driver IC. The reason for doing so is to show you how something that used to be quite complex can be made very simple – and that is what all this technology is for, isn’t it? If you have ever tried to control lots of LEDs, or more than two or three 7-segment displays, or even an LED matrix, you realise that there is quite a lot of work to do on the ...

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A arduino library for the MAX7221 and MAX7219

These two chips provide an easy way to control either an array of 64 Led's or up to eight digits made of 7-segment displays with a minimum of electronic components. Besides the chip itself you will need only a single resistor and one or two capacitors. Data is send to the chip using a SPI-compatible protocol using 3 of the digital pins on the arduino. If you want control more than eight 7-segment displays ( ...

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