Raspberry Pi LED Matrix LED dot Matrix Screen PI LED Matrix Module<br /><br />Explanation: the raspberries in LED lattice screen, will have trouble. Because the number of IO raspberries pie is limited, if every IO control an LED. Take up to about 35 LED can only control.<br />Use special LED constant current control chip, basically take up raspberries pie SPI interface (3 IO + 2 enabled) can control 64 LED lights. LED dot matrix drive is possible!<br /><img src="http://img6.eachbuyer.com/x9/p100/eb9609_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb9609_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb9609_3.jpg" />