Social Distancing Monitor with Alarm, Arduino NANO and I2C LCD1602 Display | Maker, MakerED, Maker Spaces, Coding

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Social Distancing Monitor with Alarm, Arduino NANO and I2C LCD1602 Display

In times of the Coronavirus-Crisis (Covid_19), it might be GOOD to respect the 2 meters distance to avoid getting infected!!! But not everybody can estimate distances, nor are ALL persons respecting the 2 meters rule!!! So came the idea to build an easy to realize gadget, which measures the distance and gives an alarm when the 2 meters are not respected.

First of all, like usual, I was searching the internet to find out if there isn’t already such a project around. And YES, there is one; I found a tutorial with an Arduino MEGA and a LCD1602 ISP with provided code as well. Please check below:

 

• https://thesharanmohanblog.wordpress.com/2019/05/31/arduino-ultrasonic-sensor-hc-sr04-lcd-buzzer/
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This tutorial gave me the idea to start. Instead an Arduino MEGA, I used an Arduino NANO; and instead of an LCD1602 ISP, I used an LCD1602 I2C.

Thus meaning: it needs a bit to adjust the code in the sketch in the above mentioned tutorial and it’s LESS cabling, wiring needed to connect the I2C LCD1602 display.

WE played around already with I2C LCD1602 in my tutorial below, please check:

• https://gustmees.wordpress.com/2019/01/07/first-steps-with-the-arduino-uno-r3-and-nano-maker-makered-makerspaces-coding-how-to-transform-an-lcd1602-spi-sketch-to-an-lcd1602-i2c-sketch/
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SO, here we go for the wiring… Below the wiring for the I2C LCD1602 with the Arduino NANO

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Connecting the HC-SR04 Ultrasonic Sensor:

 

Connections to the Arduino NANO:

Vcc+ gets connected to + 5V

GND to GND

ECHO gets connected to PIN 10

TRIGGER gets connected to PIN 9

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Connecting the Buzzer for the acoustic Alarm:

 

The + sign of the Buzzer gets connected to PIN 8 of the Arduino NANO and the other pin to GND!

Below you see the prototype with wiring.

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The code

Here below see a preview of the Code:

The complete Code could get downloaded in “.doc” format below.

• Social Distancing Monitor with Alarm using Arduino NANO and I2C LCD1602 Display
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Download and open the document, copy it and bring it in a NEW Sketch of the Arduino IDE. Upload it to the Arduino Nano and have fun with it!

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Ordering the necessary parts

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LCD1602 + I2C Modul LCD1602-I2C (3 pieces) Click image, please, to enlarge.	Arduino NANO Arduino NANO (3 pieces) Click image, please, to enlarge.
HC-SR04 (3 pieces) Click image, please, to enlarge.	Buzzer (10 pieces) Click image, please, to enlarge.

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All you need now is to put everything into a case. I was choosing a cardboard (recycling) 😉

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Social Distancing Monitor       Click image, please, to enlarge.	Social Distancing Monitor     Click image, please, to enlarge.
Social Distancing Monitor Click image, please, to enlarge.

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Stay tuned for next blog post(s) 😉

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L’auteur Gust MEES est Formateur andragogique / pédagogique TIC, membre du “Comité Conseil” de “Luxembourg Safer Internet” (LuSI), appelé maintenant BEESECURE, partenaire officiel (consultant) du Ministère de l’éducation au Luxembourg du projet  ”MySecureIT“, partenaire officiel du Ministère du Commerce au Luxembourg du projet ”CASES” (Cyberworld Awareness and Security Enhancement Structure). L’auteur était aussi gagnant d’un concours en électronique en 1979 ( Pays germaniques ) et voyait son projet publié dans le magazine électronique “ELO”. The author Gust MEES is ICT Course Instructor, ”Member of the Advisory Board” from “Luxembourg Safer Internet” (LuSI), BEESECURE, Official Partner (Consultant) from the Ministry of Education in Luxembourg, project “MySecureIT“, Official Partner from the Ministry of Commerce in Luxembourg, project “CASES” (Cyberworld Awareness and Security Enhancement Structure). The author was also a winner of an electronics contest (Germanic countries) in 1979 and got his project published in the “Electronics Magazine ELO”.

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