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Top Forums Programming Very Basic Arduino Uno Board Testing Post 303042226 by Neo on Thursday 19th of December 2019 08:21:11 AM
Old 12-19-2019
Very Basic Arduino Uno Board Testing

A very simple Arduino board test... LOL

Here is some very easy code to test a cheap Arduino board I just got from China via Aliexpress. I am still waiting on a about 30 more orders from Aliexpress for more Arduino stuff. This was the first order which made it here.


Code:
/* 
Arduino test-code
This code is intended to be used for an easy introduction to the Arduino board. 
The program reads data from 2 digital and 2 analog ports and prints the values to the monitor with a sampling speed of 1 Hz.
*/

int counter = 0, analog0, analog1; //Creates variables as integers
float analog0_volt, analog1_volt;  //Creates variables as floating numbers.
boolean digital2, digital3;        //Creates variables as boolean (HIGH or LOW, TRUE or FALSE)

void setup()
{                             //Setup. This section runs only once.
    Serial.begin(9600);       //Sets the communication speed between PC and Arduino Uno to 9600 baud.
    pinMode(2, INPUT);        //Sets the digital 2 pin to input mode (High impedance).
    pinMode(3, INPUT_PULLUP); //Sets the digital 2 pin to input mode with "Pull Up" (High impedance and Normal High).
    delay(500);               //0.5 seconds break.
} //end of setup

void loop()
{ //Loop. This section runs in an unending loop.
    //Collect data from all the inputs
    analog0 = analogRead(A0);  //Reads data from analog port 0 and stores it in the variable "analog0".
    analog1 = analogRead(A1);  //Reads data from analog port 1 and stores it in the variable "analog1".
    digital2 = digitalRead(2); //Reads data from digital port 2 and stores it in the variable "digital2".
    digital3 = digitalRead(3); //Reads data from digital port 3 and stores it in the variable "digital3".
    //Note the difference between pin numbering in analog (Ax) and digital (x).

    //Convertion from digital value to voltage value
    analog0_volt = ((float)analog0 / 1023) * 5; //Scales from 0-1023 (integers) to 0.0-5.0 (decimal numbers). 0=0V 1023=5V.
    analog1_volt = (analog1 / 1023.0) * 5;      //Does the same as the previous line. Notice the difference in the syntax.

    //Print out data to the monitor
    Serial.print(counter);         //Prints out the variable "counter".
    Serial.print("  - Analog0: "); //Prints the text inside the brackets "__".
    Serial.print(analog0_volt);    //Prints out the variable "analog0_volt".
    Serial.print("   Analog1: ");  //Prints the text.
    Serial.print(analog1_volt);    //Prints out the variable "analog1_volt".
    Serial.print("   Digital2: "); //Prints the text.
    Serial.print(digital2);        //Prints out the variable "digital2".
    Serial.print("   Digital3: "); //Prints the text.
    Serial.println(digital3);      //Prints out the variable "digital3" and ends with a line shift.

    delay(1000); //A 1000ms delay.
    counter++;   //Increments the variable "counter".

} //end of function (Returns to start of loop).

//The program inside the loop function will continue forever and ever, or until power down.

Using the Arduino IDE on the mac I uploaded the code above into my new cheap Chinese Arduino board and set up a simple test before I get into some more interesting stuff.

Very Basic Arduino Uno Board Testing-img_8679jpg


Very Basic Arduino Uno Board Testing-img_8678jpg


Well, at least the board works, the Arduino IDE on my mac works, etc.....
Very Basic Arduino Uno Board Testing-screen-shot-2019-12-19-81059-pmpng

This is gonna be fun, I can tell Smilie

I think I am going to build something for my motorcycle (not sure yet), using a 3G module like this one:

Code:
https://www.aliexpress.com/item/32814966264.html

Quote:
Elecrow GSM/GPRS/EDGE SIM5360E 3G Shield for Arduino Uno Mega Module A-GPS Micro SIM Card 3G Network eCALL Development Board
Or maybe I'll do some home automation for fun; so I can control things with SMS messages; or both.
These 2 Users Gave Thanks to Neo For This Post:
 

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