8*8 Single-color Lattice Control

Objective The course will show you how to use Processing to control 8*8 lattice. Equipment Microduino-Core Microduino-FT232R Other Hardware Equipment A USB cable A box of jumpers A breadboard A 8*8 lattice Two 74HC595 Schematic Program Referring to ProcessingLattice Debugging Step 1：Build the hardware environment according to the schematic, as follows: Step 2：Explain the code: There will be the code of two ends (Processing and Microduino) needed in this course. Microduino: Using firmata’s StandardFirmata program. Processing: //Define the first serial port. arduino = new Arduino(this, Arduino.list()[0], 57600); //Define the output pin in setup() as well as 64 LED objects arduino.pinMode(latchPin, Arduino.OUTPUT); for (int i=0;i<8;i++) { for (int j = 0; j < 8; j ++ ) { // Initialize each led and output pin using a for loop. leds[i][j] = new LED((i+1)*60, (j+1)*60, 50, 50, j+1+(i*10)); ledStates[i][j]=false; } } //Judge on which line or row the open fire of the 64 LED goes on or off. background(255); for (int i=0; i<8;i++) { for (int j = 0; j < 8; j ++ ) { // Run each LED using a for loop. leds[i][j].display(); if (leds[i][j].button) {//switch led on/off ledStates[i][j]=true; } else { ledStates[i][j]=false; } } } //Control and process the 74hc595 chip, map onto the 8*8 lattice. for (int i=0;i<8;i++) { arduino.digitalWrite(latchPin, 0); shiftOut(dataPin, clockPin, maskByteLines[0]); //mask(col) shiftOut(dataPin, clockPin, booleanArray2Byte(ledStates[i])); //row arduino.digitalWrite(latchPin, 1); } Function Reference： mousePressed();//Mouse clicked event processing booleanArray2Byte();//Convert boolean array into byte value shiftOut();//The 74hc595 chip’s shifOut binary handler function Step 3：Get the code downloaded and compiled successfully. Step 4：The 8*8 LED lattice will be displayed in Processing. Click any LED to see what happens. Result The LED lights go on and out correspondingly with the 8*8 lattice, just like this Video