Lesson 13--Microduino Single Digital Display with A Point

Language:	English  • 中文

Objective This lesson will teach you how to use digital tube to display numbers and the decimal point by Microduino. Equipment Microduino-Core Microduino-FT232R Other hardware equipment Breadboard Jumper one box Breadboard one piece Digital tube one 20kΩ resistor (100Ω~1kΩ) one 1uF capacitor (0.1uF~10uF) one USB Data cable one Schematic light the decimal point using sevseg.NewNum(9, 0), the second paramter uses to control the postion of decimal point. Pin Table: Microduino Pin Digital Tube Pin D10 1 D9 2 D5 3 D8 4 D13 5 D7 6 D6 7 Not used 8 D11 9 D12 10 Program Download program: https://github.com/Microduino/Microduino_Tutorials/tree/master/Microduino_Advanced/MicroduinoDigitalShowPoint /* 7 segment digital tube: A ____ | | F |____| B | G | E |____| C o DP D Pin distribution: 10 9 8 7 6 ________ | __ | | |__| | | |__|o | |________| 1 2 3 4 5 * How to connect to Microduino? * Check the Pin 3 and 9 firstly, generally they are grade-level, the digital tube in kit is common anode, so they both are anode, we can use any of them. * 1 (E) Connect to Microduino Pin 10 * 2 (D) Connect to Microduino Pin 9 * 3 Because only use one digital tube, so this pin or pin 8 connects to Microduino Pin 5 * 4 (C) Connect to Microduino Pin 8 * 5 (DP) Connect to Microduino Pin 13 * 6 (B) Connect to Microduino Pin 7 * 7 (A) Connect to Microduino Pin 6 * 8 Because only use one digital tube, so this pin or pin 3 connects to Microduino Pin 5 * 9 (F) Connect to Microduino Pin 11 * 10 (G) Connect to Microduino Pin 12 */ #include "SevSeg.h" SevSeg sevseg; void setup() { //Define the used pin sevseg.Begin(1,2,3,4,5,6,7,8,9,10,11,12,13); } void loop() { //Enable output function sevseg.PrintOutput(); sevseg.NewNum(9, 0); //Digital tube function outputs number, the second parameter is the positon of decimal point. } Debug Firstly download the library, unzip it and put to libraries folder of Arduino IDE, then restart Arduino IDE to load library. Library link: https://docs.google.com/file/d/0Bwrp4uluZCpNN1Q4dmFZX1MzWVE/edit This library can drive 4bits digital tube and support number, decimal point and easy to use. Step 1: Copy the code to IDE and compile it. Step 2: Set up circuit, as follows: Step 3: Run program Result Digital will display number and decimal point. Video