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Hy guys welcome in my other video this project is consisting on a LED Matrix project in this project i am going to control 128 Led ' s through Arduino Uno .You know that the arduino uno has only 13 digital pins (PWM pins) .Guys to solve this problem i use shift register (74hc555 ic) . Its a only possible solution for it .The one shift register ic is able to control 8 more pins so its efficiency is very nice it need only three input pins as a input and gives eight output pins . We use shift register to increase our output we give input shift register from arduino uno digital pins . And then each pin of shift register handles the one row or column . In the designing of Led Display i use matrix technique if i control all the led's separately so i need 128 PWM pins so its mean increasing cost and also it consumes more work and time . so I connect all the Anode of leds in rows and all the cathodes in columns . In this section i can not discuss with you the code of this project because i design a series of tutorials on Arduino uno and on microcontrollers Basics so guys you need to wait for it . Don't forget to like subscribe my channel and follow me on google and twitter like my facebook page Arduino by RANA SAAD
