Hi all,
I am a newbie with Arduino programming. I have been playing with Ardudroid app and want to do the following: when 1 press a button, say #13 on the ardudroid app, I want my 2 digit 7 segment display to display the letter" An" and when i press button 12 on the ardudroid app I need to clear the "An" and display "01" on the 2 digit display. The idea here is that i'm making a fake answering machine for a prop. When the call comes in (me, pressing button 12 on cue displays "An"(answer)and would ideally would blink x amount of times then press button 12 to read "01" (one new message".
I am using a Arduino uno rev 3 and have successfully gotten the bluetooth communication to talk to the app. I understand multiplexing somewhat but have only found countdown tutorials. The 2 digit 7 seg display is LPD-3020D which is a common cathode. Any help would be greatly appreciated.
Hi and welcome.
Have a look at the Playground (click !), scroll down to where it says Seven segment displays.
You'll find some explanation and some examples.
Thank you for for reply MAS3. I did get my 7 seg to display the way i needed but I cant seem to implement it into the ardudroid app. when I press button 13 on the app I can see the 7seg display blink the correct characters but it does not stay on. I suspect because it's not looping? I need to figure out how to apply it to my case #'s (example..case #13 sends the number 13 to my display, case #12 clears the previous characters and sets display to the number 12) I have attached the code i'm trying. Any input on how to go about this would be amazing as i'm running out of time on this and am a bit in over my head here. Thank you.
the code:
#include <SevenSeg.h>
/*
PROJECT: ArduDroid
PROGRAMMER: Hazim Bitar (techbitar at gmail dot com)
DATE: Oct 31, 2013
FILE: ardudroid.ino
LICENSE: Public domain
*/
#define START_CMD_CHAR '*'
#define END_CMD_CHAR '#'
#define DIV_CMD_CHAR '|'
#define CMD_DIGITALWRITE 10
#define CMD_ANALOGWRITE 11
#define CMD_TEXT 12
#define CMD_READ_ARDUDROID 13
#define MAX_COMMAND 20 // max command number code. used for error checking.
#define MIN_COMMAND 10 // minimum command number code. used for error checking.
#define IN_STRING_LENGHT 40
#define MAX_ANALOGWRITE 255
#define PIN_HIGH 3
#define PIN_LOW 2
SevenSeg disp(2,3,4,5,6,7,8); // I Added this code to orginal Ardudroid program to diaply my digits
const int numOfDigits=2;
int digitPins[numOfDigits]={12,13};
String inText;
void setup() {
Serial.begin(9600);
Serial.println("ArduDroid 0.12 Alpha by TechBitar (2013)");
Serial.flush();
disp.setDigitPins(numOfDigits,digitPins); // This was also added and sets my initial display to all LEDs off
disp.setCommonCathode();
digitalWrite(2, LOW);
digitalWrite(3, LOW);
digitalWrite(4, LOW);
digitalWrite(5, LOW);
digitalWrite(6, LOW);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
}
void loop()
{
Serial.flush();
int ard_command = 0;
int pin_num = 0;
int pin_value = 0;
char get_char = ' '; //read serial
// wait for incoming data
if (Serial.available() < 1) return; // if serial empty, return to loop().
// parse incoming command start flag
get_char = Serial.read();
if (get_char != START_CMD_CHAR) return; // if no command start flag, return to loop().
// parse incoming command type
ard_command = Serial.parseInt(); // read the command
// parse incoming pin# and value
pin_num = Serial.parseInt(); // read the pin
pin_value = Serial.parseInt(); // read the value
// 1) GET TEXT COMMAND FROM ARDUDROID
if (ard_command == CMD_TEXT){
inText =""; //clears variable for new input
while (Serial.available()) {
char c = Serial.read(); //gets one byte from serial buffer
delay(5);
if (c == END_CMD_CHAR) { // if we the complete string has been read
// add your code here
break;
}
else {
if (c != DIV_CMD_CHAR) {
inText += c;
delay(5);
}
}
}
}
// 2) GET digitalWrite DATA FROM ARDUDROID
if (ard_command == CMD_DIGITALWRITE){
if (pin_value == PIN_LOW) pin_value = LOW;
else if (pin_value == PIN_HIGH) pin_value = HIGH;
else return; // error in pin value. return.
set_digitalwrite( pin_num, pin_value); // Uncomment this function if you wish to use
return; // return from start of loop()
}
// 3) GET analogWrite DATA FROM ARDUDROID
if (ard_command == CMD_ANALOGWRITE) {
analogWrite( pin_num, pin_value );
// add your code here
return; // Done. return to loop();
}
// 4) SEND DATA TO ARDUDROID
if (ard_command == CMD_READ_ARDUDROID) {
// char send_to_android[] = "Place your text here." ;
// Serial.println(send_to_android); // Example: Sending text
Serial.print(" Analog 0 = ");
Serial.println(analogRead(A0)); // Example: Read and send Analog pin value to Arduino
return; // Done. return to loop();
}
}
// 2a) select the requested pin# for DigitalWrite action
void set_digitalwrite(int pin_num, int pin_value)
{
switch (pin_num) {
case 13: // Here is where I want to send the #12 to my display but it just lights up for a short flicker when button 13 on ardudriod is pressed.
disp.write(13);
break;
case 12: // This button should wipe the previous characters and sed the #12 to the display
disp.write(12);
break;
case 11:
pinMode(11, OUTPUT);
digitalWrite(11, pin_value);
// add your code here
break;
case 10:
pinMode(10, OUTPUT);
digitalWrite(10, pin_value);
// add your code here
break;
case 9:
pinMode(9, OUTPUT);
digitalWrite(9, pin_value);
// add your code here
break;
case 8:
pinMode(8, OUTPUT);
digitalWrite(8, pin_value);
// add your code here
break;
case 7:
pinMode(7, OUTPUT);
digitalWrite(7, pin_value);
// add your code here
break;
case 6:
pinMode(6, OUTPUT);
digitalWrite(6, pin_value);
// add your code here
break;
case 5:
pinMode(5, OUTPUT);
digitalWrite(5, pin_value);
// add your code here
break;
case 4:
pinMode(4, OUTPUT);
digitalWrite(4, pin_value);
// add your code here
break;
case 3:
pinMode(3, OUTPUT);
digitalWrite(3, pin_value);
// add your code here
break;
case 2:
pinMode(2, OUTPUT);
digitalWrite(2, pin_value);
// add your code here
break;
// default:
// if nothing else matches, do the default
// default is optional
}
}
Hi,
Try this. I can't test it for you, so its guess-work on my part.
Also note this is how you should post code/sketches on this forum. Please edit your original post so it looks like the box below. Edit your post, select all the code and press the </> icon.
Paul
#include <SevenSeg.h>
/*
PROJECT: ArduDroid
PROGRAMMER: Hazim Bitar (techbitar at gmail dot com)
DATE: Oct 31, 2013
FILE: ardudroid.ino
LICENSE: Public domain
*/
#define START_CMD_CHAR '*'
#define END_CMD_CHAR '#'
#define DIV_CMD_CHAR '|'
#define CMD_DIGITALWRITE 10
#define CMD_ANALOGWRITE 11
#define CMD_TEXT 12
#define CMD_READ_ARDUDROID 13
#define MAX_COMMAND 20 // max command number code. used for error checking.
#define MIN_COMMAND 10 // minimum command number code. used for error checking.
#define IN_STRING_LENGHT 40
#define MAX_ANALOGWRITE 255
#define PIN_HIGH 3
#define PIN_LOW 2
SevenSeg disp(2,3,4,5,6,7,8); // I Added this code to orginal Ardudroid program to diaply my digits
const int numOfDigits=2;
int digitPins[numOfDigits]={12,13};
int numberToDisplay;
String inText;
void setup() {
Serial.begin(9600);
Serial.println("ArduDroid 0.12 Alpha by TechBitar (2013)");
Serial.flush();
disp.setDigitPins(numOfDigits,digitPins); // This was also added and sets my initial display to all LEDs off
disp.setCommonCathode();
digitalWrite(2, LOW);
digitalWrite(3, LOW);
digitalWrite(4, LOW);
digitalWrite(5, LOW);
digitalWrite(6, LOW);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
}
void loop()
{
disp.write(numberToDisplay);
Serial.flush();
int ard_command = 0;
int pin_num = 0;
int pin_value = 0;
char get_char = ' '; //read serial
// wait for incoming data
if (Serial.available() < 1) return; // if serial empty, return to loop().
// parse incoming command start flag
get_char = Serial.read();
if (get_char != START_CMD_CHAR) return; // if no command start flag, return to loop().
// parse incoming command type
ard_command = Serial.parseInt(); // read the command
// parse incoming pin# and value
pin_num = Serial.parseInt(); // read the pin
pin_value = Serial.parseInt(); // read the value
// 1) GET TEXT COMMAND FROM ARDUDROID
if (ard_command == CMD_TEXT){
inText =""; //clears variable for new input
while (Serial.available()) {
char c = Serial.read(); //gets one byte from serial buffer
delay(5);
if (c == END_CMD_CHAR) { // if we the complete string has been read
// add your code here
break;
}
else {
if (c != DIV_CMD_CHAR) {
inText += c;
delay(5);
}
}
}
}
// 2) GET digitalWrite DATA FROM ARDUDROID
if (ard_command == CMD_DIGITALWRITE){
if (pin_value == PIN_LOW) pin_value = LOW;
else if (pin_value == PIN_HIGH) pin_value = HIGH;
else return; // error in pin value. return.
set_digitalwrite( pin_num, pin_value); // Uncomment this function if you wish to use
return; // return from start of loop()
}
// 3) GET analogWrite DATA FROM ARDUDROID
if (ard_command == CMD_ANALOGWRITE) {
analogWrite( pin_num, pin_value );
// add your code here
return; // Done. return to loop();
}
// 4) SEND DATA TO ARDUDROID
if (ard_command == CMD_READ_ARDUDROID) {
// char send_to_android[] = "Place your text here." ;
// Serial.println(send_to_android); // Example: Sending text
Serial.print(" Analog 0 = ");
Serial.println(analogRead(A0)); // Example: Read and send Analog pin value to Arduino
return; // Done. return to loop();
}
}
// 2a) select the requested pin# for DigitalWrite action
void set_digitalwrite(int pin_num, int pin_value)
{
switch (pin_num) {
case 13: // Here is where I want to send the #12 to my display but it just lights up for a short flicker when button 13 on ardudriod is pressed.
numberToDisplay = 12;
break;
case 12: // This button should wipe the previous characters and sed the #12 to the display
numberToDisplay = 0;
break;
case 11:
pinMode(11, OUTPUT);
digitalWrite(11, pin_value);
// add your code here
break;
case 10:
pinMode(10, OUTPUT);
digitalWrite(10, pin_value);
// add your code here
break;
case 9:
pinMode(9, OUTPUT);
digitalWrite(9, pin_value);
// add your code here
break;
case 8:
pinMode(8, OUTPUT);
digitalWrite(8, pin_value);
// add your code here
break;
case 7:
pinMode(7, OUTPUT);
digitalWrite(7, pin_value);
// add your code here
break;
case 6:
pinMode(6, OUTPUT);
digitalWrite(6, pin_value);
// add your code here
break;
case 5:
pinMode(5, OUTPUT);
digitalWrite(5, pin_value);
// add your code here
break;
case 4:
pinMode(4, OUTPUT);
digitalWrite(4, pin_value);
// add your code here
break;
case 3:
pinMode(3, OUTPUT);
digitalWrite(3, pin_value);
// add your code here
break;
case 2:
pinMode(2, OUTPUT);
digitalWrite(2, pin_value);
// add your code here
break;
// default:
// if nothing else matches, do the default
// default is optional
}
}
PaulRb,
You Sir are a rockstar!!!! Thank you a million times!!! That worked great. I noticed that in "Case 12" the value of 0 wasn't necessary. I changed it to =12. When i press button 13 my display reads 13, when i press button 12, it reads 12. Thank you again for the help and heads up how to post code to this forum.