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Full Discussion: Very Basic Arduino Uno Board Testing
Top Forums Programming Very Basic Arduino Uno Board Testing Post 303042294 by Neo on Friday 20th of December 2019 10:29:42 AM
Old 12-20-2019
Here is a quick test with the same Arduino Uno with the I2C bus and the HC-SRO4 Ultrasonic Ranging Module

Very Basic Arduino Uno Board Testing-img_8698jpg


Very Basic Arduino Uno Board Testing-img_8693jpg


and the simple test sketch:

Code:
/*
  1602 LCD Display with I2C and HC-SRO4 Demo
  Created by Neo December 2019
  https://www.unix.com
*/
#include <LiquidCrystal_I2C.h>
const int i2c_addr = 0x27;    // bus address from LCD display
LiquidCrystal_I2C lcd(i2c_addr, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);
const int trigPin = 9;    //  HC-SRO4 trig
const int echoPin = 10;   //  HC-SRO4 echo
const int maxRange = 400; //  HC-SRO4 max range in cm
const int minRange = 2;   //  HC-SRO4 min range in cm
long duration;
float distanceCm, distanceInch;
void setup()
{
    lcd.begin(16, 2); // Initializes LCD screen and specifies chars (16) and rows (2)
    pinMode(trigPin, OUTPUT);
    pinMode(echoPin, INPUT);
}
void loop()
{
    digitalWrite(trigPin, LOW);
    delayMicroseconds(2);
    digitalWrite(trigPin, HIGH);
    delayMicroseconds(10);
    digitalWrite(trigPin, LOW);
    duration = pulseIn(echoPin, HIGH);
    distanceCm = duration * 0.034 / 2;
    distanceInch = duration * 0.0133 / 2;
    // Set range of HC-SRO4
    if (distanceCm > maxRange || distanceCm < minRange)
    {
        distanceCm = 0;
        distanceInch = 0;
    }
    //first row
    lcd.setCursor(0, 0); // Sets the cursor location
    lcd.print("Dist(cm): ");
    if (distanceCm > 0)
    {
        lcd.print(distanceCm, 1);
        lcd.print("     ");
    }
    else
    {
        lcd.print("         "); // easy clear :)
    }
    // second row
    lcd.setCursor(0, 1);
    lcd.print("Dist(in): ");
    if (distanceCm > 0)
    {
        lcd.print(distanceInch, 1);
        lcd.print("    ");
    }
    else
    {
        lcd.print("         "); // easy clear :)
    }

    delay(200);
}

 

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LEARN ABOUT DEBIAN

config::model::models::lcdd::mtxorb

Config::Model::models::LCDd::MtxOrb(3pm)		User Contributed Perl Documentation		  Config::Model::models::LCDd::MtxOrb(3pm)

NAME

       Config::Model::models::LCDd::MtxOrb - Configuration class LCDd::MtxOrb

VERSION

       version 2.021

DESCRIPTION

       Configuration classes used by Config::Model

       generated from LCDd.conf

Elements
   Device
       Select the output device to use Optional. Type uniline. upstream_default: '/dev/lcd'.

   Size
       Set the display size Optional. Type uniline. upstream_default: '20x4'.

   Type
       Set the display type Optional. Type enum. choice: 'lcd', 'lkd', 'vfd', 'vkd'. upstream_default: 'lcd'.

   Contrast
       Set the initial contrast NOTE: The driver will ignore this if the display
	     is a vfd or vkd as they don't have this feature. Optional. Type uniline. upstream_default: '480'.

   hasAdjustableBacklight
       Some old displays do not have an adjustable backlight but only can switch the backlight on/off. If you experience randomly appearing block
       characters, try setting this to false. Optional. Type enum. choice: 'yes', 'no'. upstream_default: 'yes'.

   Brightness
       Set the initial brightness Optional. Type integer. upstream_default: '1000'.

   OffBrightness
       Set the initial off-brightness This value is used when the display is normally switched off in case LCDd is inactive. Optional. Type
       integer. upstream_default: '0'.

   Speed
       Set the communication speed Optional. Type enum. choice: '1200', '2400', '9600', '19200'. upstream_default: '19200'.

   KeyMap_A
       The following table translates from MtxOrb key letters to logical key names.  By default no keys are mapped, meaning the keypad is not used
       at all.Optional. Type uniline. default: 'Left'.

   KeyMap_B
       Optional. Type uniline. default: 'Right'.

   KeyMap_C
       Optional. Type uniline. default: 'Up'.

   KeyMap_D
       Optional. Type uniline. default: 'Down'.

   KeyMap_E
       Optional. Type uniline. default: 'Enter'.

   KeyMap_F
       Optional. Type uniline. default: 'Escape'.

   keypad_test_mode
       See the [menu] section for an explanation of the key mappings You can find out which key of your display sends which character by setting
       keypad_test_mode to yes and running LCDd. LCDd will output all characters it receives.  Afterwards you can modify the settings above and
       set keypad_set_mode to no again.Optional. Type uniline. default: 'no'.

SEE ALSO

       o   cme

perl v5.14.2							    2012-11-09				  Config::Model::models::LCDd::MtxOrb(3pm)
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