I´m relative new to this Arduino Programming.
So and now, here´s my first Problem and I´m looking forward anyone here can help me
My tiny project: I want to drive a servo using the Amarino-App. Particularly the Accelerometer.
I have a connection from my Phone to the Bluetooth-Module.
I´ve tested it with other Code and so on ...
Hopeing anybody can find the mistake.
Thank you very much stranger
// *********************************************
// Connect Servo as follows:
// ::: BLACK --> GND :::
// ::: RED --> 5V :::
// ::: Signal --> PIN 9 :::
// *********************************************
#include <MeetAndroid.h>
#include <Servo.h>
Servo myservo; // create servo object to control a servo
// a maximum of eight servo objects can be created
int pos=0; // variable to store the servo position
char value;
MeetAndroid meetAndroid;
float data[3] = {0};
int intdata[3] = {0};
int i = 0;
void setup()
{
Serial.begin(115200); // baud rate 115200
myservo.attach(9); // attaches the servo on pin 9 to the servo object
meetAndroid.registerFunction(floatValues, 'A'); //use event A in amarino
}
void loop()
{
meetAndroid.receive(); // you need to keep this in your loop() to receive events
}
void floatValues(byte flag, byte numOfValues)
{
// create an array where all event values should be stored
// the number of values attached to this event is given by
// a parameter(numOfValues)
// call the library function to fill the array with values
meetAndroid.getFloatValues(data);
// access the values
for (int i=0; i<3;i++)
{
meetAndroid.send(data[i]);
}
// ********************************************************
// ********************************************************
// This is for Turn Left/Turn Right
if (-10<=data[0]<=10)
{
if (data[0] <= -2)
{
myservo.write(0);
}
else if (data[0] >= 2)
{
myservo.write(180);
}
}
}
The sketch is from a similar Project at "Instructables": http://www.instructables.com/id/Android-RC-Car/?ALLSTEPS
It has the same scheme which I use in my Project.
Here´s the "Original" Code (he used i=1, doesnt matter at all). Look at the end. Can´t get any differences:
#include <MeetAndroid.h>
const int EnablePinDir = 10;
const int EnablePinMotor = 6;
const int LogicPin1Dir = 11;
const int LogicPin2Dir = 12;
const int LogicPin1Motor = 8;
const int LogicPin2Motor = 9;
float data[3] = {0};
int intdata[3] = {0};
int i = 1;
// MeetAndroid meetAndroid();
// you can define your own error function to catch messages
// where not fuction has been attached for
MeetAndroid meetAndroid(error);
void error(uint8_t flag, uint8_t values){
Serial.print("ERROR: ");
Serial.print(flag);
}
void setup() {
Serial.begin(9600);
Serial.println("\t\t\t.----------------------.");
Serial.println("\t\t\t| Starting Up.. |");
Serial.println("\t\t\t'----------------------'");
pinMode(EnablePinDir, OUTPUT);
pinMode(EnablePinMotor, OUTPUT);
pinMode(LogicPin1Dir, OUTPUT);
pinMode(LogicPin2Dir, OUTPUT);
pinMode(LogicPin1Motor, OUTPUT);
pinMode(LogicPin2Motor, OUTPUT);
delay(1000);
Serial.println("\t\t\t.----------------------.");
Serial.println("\t\t\t| PG-R Ready ! |");
Serial.println("\t\t\t| Have Fun ! |");
Serial.println("\t\t\t'----------------------'");
meetAndroid.registerFunction(floatValues, 'A');
}
void loop()
{
meetAndroid.receive(); // you need to keep this in your loop() to receive events
}
void floatValues(byte flag, byte numOfValues)
{
// create an array where all event values should be stored
// the number of values attached to this event is given by
// a parameter(numOfValues)
// call the library function to fill the array with values
meetAndroid.getFloatValues(data);
// access the values
for (int i=0; i<3;i++)
{
meetAndroid.send(data[i]);
}
// ..===========================================..
// || ||
// || Control Algorithm Beginning here ||
// || ||
// ''===========================================''
// This is for Forward/Reverse
if (-10<=data[0]<=10) {
// Tilt-Proportional Speed
intdata[0] = int(data[0]);
intdata[0] = intdata[0] * 24;
if (data[0] <= -2) {
intdata[0] = abs(intdata[0]);
digitalWrite(LogicPin1Motor, HIGH);
digitalWrite(LogicPin2Motor, LOW);
analogWrite(EnablePinMotor, intdata[0]);
}
else if (data[0] >= 2) {
digitalWrite(LogicPin1Motor, LOW);
digitalWrite(LogicPin2Motor, HIGH);
analogWrite(EnablePinMotor, intdata[0]);
}
else if (-1<=data[0]<=1) {
digitalWrite(LogicPin1Motor, LOW);
digitalWrite(LogicPin2Motor, LOW);
digitalWrite(EnablePinMotor, LOW);
}
}
// This is for Turn Left/Turn Right
if (-10<=data[1]<=10) {
if (data[1] <= -2) {
digitalWrite(LogicPin1Dir, HIGH);
digitalWrite(LogicPin2Dir, LOW);
digitalWrite(EnablePinDir, HIGH);
}
else if (data[1] >= 2) {
digitalWrite(LogicPin1Dir, LOW);
digitalWrite(LogicPin2Dir, HIGH);
digitalWrite(EnablePinDir, HIGH);
}
else if (-1<=data[1]<=1) {
digitalWrite(LogicPin1Dir, LOW);
digitalWrite(LogicPin2Dir, LOW);
digitalWrite(EnablePinDir, LOW);
}
}
}
Yup, that looks to be about the quality of stuff I've seen on the other Instructables I've been pointed to.
I see that construct is used several times - I wonder if that is what the author intended?
What do you mean with "verified"?
The amarino accelerometer sends datas as an array of 3 values. Data[0] will take the first values and executes the if-case ( in the if-case is another if-case with furher instructions).
But you have to regard one thing:
Before you Connect your Amarino with the Bluetooth-Module, start the Accelerometer-Event.
Only after you did this hit the "connect"-button.
-- someone should write a goog tutorial 8) --
have a nice day
tk
Can you think of a value of "data[0]" that doesn't cause that to evaluate as "true"?
You may as well have written if (1), or omitted the conditional altogether.
Explanation:
The expression is evaluated left to right.
Is data [0] less than or equal to -10?
This expression will evaluate to 0 for false, 1 for true.
Now, evaluate the next expression: Is 0 (or 1) less than or equal to +10?
In most parts of the Universe, this will always be true.
