/* Library examples for TM1638. Copyright (C) 2011 Ricardo Batista This program is free software: you can redistribute it and/or modify it under the terms of the version 3 GNU General Public License as published by the Free Software Foundation. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ #include // define a module on data pin 8, clock pin 9 and strobe pin 7 TM1638 module(8, 9, 7); void setup() { // display a hexadecimal number and set the left 4 dots module.setDisplayToHexNumber(0x1234ABCD, 0xF0); } void loop() { byte keys = module.getButtons(); // light the first 4 red LEDs and the last 4 green LEDs as the buttons are pressed module.setLEDs(((keys & 0xF0) << 8) | (keys & 0xF)); }