Control 7 segment LED displays with AVR


Posted on Feb 5, 2014

LED displays are nothing more than sets of Light Emitting Diodes. The difference is that they have different shapes in order to display specific information. So driving LED displays is the same as regular LEDs. This is simple connection when there are enough of microcontroller Pins. But if you want to connect more displays you will need more micro


Control 7 segment LED displays with AVR
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controller pins than it can give you. Then you need to make more advanced circuit with dynamic control. The idea of this circuit is very simple. Human eye is inertial and can`t notice fast flicker of images. Thus you need to light only one display at one time, and then switch to another and so on. Refreshing displays like 10 15 times a second should be enough to see clear image of all digits. We aim to transmit more information by carrying articles. Please send us an E-mail to wanghuali@hqew. net within 15 days if we are involved in the problems of article content, copyright or other problems. We will delete it soon.




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