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02.18
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[°­ÁÂ] ½±°Ô µû¶óÇÏ´Â ¿À·»Áöº¸µå Æ©Å丮¾ó(11)¿À·»Áö º¸µå¸¦ »ç¿ëÇÏ¿© ¿Âµµ ÃøÁ¤°è¸¦ ¸¸µé¾î º¸ÀÚ

   
 
[ÄÄÇ»ÅÍ¿ùµå] ¾ÆµÎÀ̳ë´Â ÀÌÅ»¸®¾î·Î ‘Ä£ÇÑ Ä£±¸’¶ó´Â ¶æÀ» °¡Áø ´ëÇ¥ÀûÀÎ ¿ÀǼҽº Çϵå¿þ¾î´Ù. µüµüÇϰí Á¢±ÙÇϱâ Èûµé¾ú´ø ÀÓº£µðµå ºÐ¾ß¸¦ ´©±¸³ª ½±°Ô Á¢±ÙÇÒ ¼ö ÀÖµµ·Ï ¸¸µç ¹Ì´Ï ±âÆÇÀ̶ó ÇÒ ¼ö ÀÖ´Ù. À̹ø °­Á¿¡ »ç¿ëÇÏ´Â ¾ÆµÎÀÌ³ë ¿À·»Áöº¸µå´Â Çѱ¹Çü ¾ÆµÎÀ̳ë¶ó ÇÒ ¼ö ÀÖ´Ù.

¾ÆµÎÀ̳ëÀÇ º¸±ÞÀº ¿ÀǼҽº Çϵå¿þ¾îÀÇ È®»êÀ» ºÒ·¯ÀÏÀ¸Ä×°í ¸ÞÀÌÄ¿ ¹®È­ÀÇ È®»ê¿¡µµ Å« ±â¿©¸¦ Çß´Ù. ÃÖ±Ù¿¡´Â ÀÎÅÚ, ¸¶ÀÌÅ©·Î¼ÒÇÁÆ® µî ´ëÇü ±â¾÷µéµµ ÀÌ·± ¿ÀǼҽº Çϵå¿þ¾î½ÃÀå¿¡ ¶Ù¾îµé±â ½ÃÀÛÇß´Ù. ±× ¸¸Å­ ¿ÀǼҽº Çϵå¿þ¾î ½ÃÀåÀÇ ÀáÀç·ÂÀÌ Ä¿Á³´Ù´Â ¾ê±âÀÌ´Ù.


1) ÇÁ·ÎÁ§Æ® °³¿ä

À̹ø¿¡ ¼Ò°³ÇÒ ÇÁ·ÎÁ§Æ®´Â TMP36 ¾Æ³¯·Î±× ¿Âµµ ¼¾¼­¿Í ¼­º¸¸ðÅ͸¦ »ç¿ëÇÏ¿© ¸¸µç ¿Âµµ°èÀÌ´Ù. ±âº»ÀûÀ¸·Î ¿Âµµ°è¶ó Çϸé À¯¸®°ü¿¡ ¼öÀº ¿Âµµ°è¸¦ ¶°¿Ã¸®°ÚÁö¸¸, À̹ø¿¡ ¸¸µé ¿Âµµ°è´Â ¹Ù´ÃÀ» ÅëÇØ º¸µå¿¡ ÀûÈù ´«±ÝÀ¸·Î ¿Âµµ¸¦ ¾Ë·ÁÁÖ´Â ±×·± ¿Âµµ°èÀÌ´Ù.

   
 

±âÁ¸ÀÇ ¾ÆµÎÀÌ³ë Æ©Å丮¾ó¿¡¼­´Â ¿Âµµ¼¾¼­¿Í LCD¸ðµâÀ» »ç¿ëÇÏ¿© ´Ü¼øÇÏ°Ô °ªÀ» Ãâ·ÂÇÏ´Â ¿¹Á¦°¡ ¸¹Àºµ¥, ±×·± ´Ü¼øÇÑ µð½ºÇ÷¹ÀÌ¿¡ Ãâ·ÂµÈ °ªÀÇ ÇüŰ¡ ¾Æ´Ï¶ó ½Ã°èó·³ ¹Ù´Ã·Î ¿Âµµ¸¦ ´«À¸·Î º¼ ¼ö ÀÖ´Â »ö´Ù¸¥ ¿Âµµ°è¸¦ ¸¸µé¾î º¸ÀÚ.

À̹ø ÇÁ·ÎÁ§Æ®¿¡ ÇÊ¿äÇÑ ¼­º¸¸ðÅÍ¿Í ¿Âµµ¼¾¼­ ¸ðµÎ ±¸Çϱ⠽¬¿î ¸ðµâÀ̰í, ±âÁ¸ Æ©Å丮¾ó¿¡¼­ »ç¿ë¹ý¿¡ °üÇØ ¼³¸íÇ߱⠶§¹®¿¡ »ç¿ëÇϴµ¥´Â Å« ¾î·Á¿òÀÌ ¾øÀ»°ÍÀÌ´Ù. ½ÉÁö¾î´Â ¾ÆµÎÀ̳ëIDE ¿¹Á¦Äڵ忡¼­µµ ¿¹Á¦¸¦ Áö¿øÇÑ´Ù.

 

ÇÊ¿äÇÑ ºÎǰ ¸ñ·Ï 
   
 


Çϵå¿þ¾î ¿¬°áÇϱâ

ºê·¹µå º¸µå
¡ØTMP36 ¿Âµµ¼¾¼­¸¦ ¿¬°áÇÒ ¶§´Â ÆòÆòÇÑ ¸é°ú µÕ±Ù ¸éÀ» Àß È®ÀÎÇØ¾ß Çϸç, ¼­º¸¸ðÅÍÀÇ ¿¬°áÀº ¼±ÀÇ »ö±òÀ» È®ÀÎÇØ¾ß ÇÑ´Ù. º¸Åë ¼­º¸¸ðÅÍÀÇ ¼± Áß °ËÁ¤»öÀº GND, »¡°£»öÀº VCC, Èò»öÀ̳ª ³ë¶õ»öÀº µðÁöÅÐÇÉ¿¡ ¿¬°áÇÑ´Ù.

   
 

ÀüÀÚ È¸·Îµµ
   
 


»çÁø¿¡ º¸ÀÌ´Â ÇÁ·ÎÁ§Æ®´Â °è±âÆÇÀº ÄÄÇ»Å͸¦ »ç¿ëÇÏ¿© »Ì¾Ò°í 0¡É ~ 30¡É±îÁöÀÇ ¹üÀ§¸¦ ¼³Á¤Çß´Ù. (Á÷Á¢ Á¦ÀÛÇÑ´Ù¸é ÀÌ ¹üÀ§´Â º¯°æ°¡´ÉÇÏ´Ù. ´ë½Å ÄÚµå »ó¿¡¼­µµ ¼öÁ¤ÀÌ ÇÊ¿äÇÏ´Ù.) 

   
 

µÞ ºÎºÐÀº ¼­º¸¸ðÅ͸¦ ´Þ°í ÆÐ³Î Áß¾Ó¿¡ ±¸¸ÛÀ» ¶Õ¾î ¾ÕÂÊÀÇ ¹Ù´Ã°ú ¼­º¸¸ðÅ͸¦ ¿¬°áÇÏ¿© ¿Âµµ¿¡ ¸Â°Ô ¹Ù´ÃÀÌ ¿òÁ÷ÀδÙ.

   
 

¼Ò½ºÄÚµå

#include <Servo.h>
//º¯¼ö ¼±¾ð
float voltage = 0;
float sensor = 0;
float celsius = 0;
int angle = 0;

Servo myservo; //¼­º¸¸ðÅÍ °´Ã¼ ¼±¾ð

void setup() {
myservo.attach(4); //¼­º¸¸ðÅ͸¦ µðÁöÅÐ ÇÉ4¹øÀ¸·Î ¼³Á¤ÇÕ´Ï´Ù.
Serial.begin(9600); //½Ã¸®¾ó Åë½ÅÀ» ÃʱâÈ­Çϰí Åë½Å¼Óµµ¸¦ 9600bps·Î ¼³Á¤ÇÕ´Ï´Ù.
}

void loop() {
sensor = analogRead(0); //¾Æ³¯·Î±× 0¹øÇÉ¿¡ ¿¬°áµÈ ¾Æ³¯·Î±× ¿Âµµ¼¾¼­·Î ºÎÅÍ °ªÀ» ÀоîµéÀÔ´Ï´Ù.
//Á¤ÇØÁø °úÁ¤À» ÅëÇØ ¼¾¼­¿¡¼­ ÀоîµéÀÎ °ªÀ» ¼·¾¾¿Âµµ·Î º¯È¯ÇÕ´Ï´Ù.
voltage = (sensor*5000)/1024;
voltage = voltage-500;
celsius = voltage/10;

//½Ã¸®¾ó¸ð´ÏÅÍ¿¡ ¿Âµµ°ªÀ» Ãâ·ÂÇÕ´Ï´Ù.
Serial.print(celsius);

//mapÇÔ¼ö¸¦ ÅëÇØ ÃøÁ¤µÈ ¿Âµµ°ªÀ» ¼­º¸¸ðÅͰ¡ ¿òÁ÷ÀÏ °¢µµ·Î º¯È¯½Ãŵ´Ï´Ù.
//celsius°ªÀº 0ºÎÅÍ 30±îÁöÀÇ °ª¸¸À» À¯È¿°ªÀ¸·Î ÀнÀ´Ï´Ù.
//À¯È¿°ªÀ¸·Î ÀÐÀº 0ºÎÅÍ 30»çÀÇ °ªÀ» 180ºÎÅÍ 0»çÀÌÀÇ °ªÀ¸·Î º¯È¯½Ãŵ´Ï´Ù.
int angle = map(celsius,0,30,180,0);
//¼­º¸¸ðÅÍÀÇ °¢µµ¸¦ ½Ã¸®¾ó¸ð´ÏÅÍ¿¡ Ãâ·ÂÇÕ´Ï´Ù.
Serial.print(angle);
Serial.println(" degree");

//¼­º¸¸ðÅÍ¿¡ ÁÖ¾îÁø °¢µµ°ªÀÌ 0ºÎÅÍ 180»çÀÌÀÇ À¯È¿ÇÑ °ªÀÏ °æ¿ì ¼­º¸¸ðÅ͸¦ Á¦¾îÇÕ´Ï´Ù.
if(angle >=0 && angle <=180) {
myservo.write(angle);
delay(1000); //1Ãʸ¶´Ù ¹Ýº¹ÇÏ°Ô µË´Ï´Ù.
}
}

ÄÚµå´Â ÇÁ·ÎÁ§Æ®Ä¡°í °£´ÜÇÑ ÆíÀÌ´Ù. ÀÏ´Ü ¸ÕÀú ¿Âµµ¼¾¼­ °ªÀ» Àоî¿À´Â ÀÛ¾÷À» ¸ÕÀú ÇÏ°Ô µÈ´Ù. ¾Æ·¡ Äڵ尡 ¾Æ³¯·Î±× 0¹øÇÉ¿¡ ¿¬°áµÈ ¿Âµµ¼¾¼­¿¡¼­ °ªÀ» Àоî¿Í¼­ ¼·¾¾·Î º¯È¯ÇÏ´Â ºÎºÐÀÌ´Ù.


sensor = analogRead(0); //¾Æ³¯·Î±× 0¹øÇÉ¿¡ ¿¬°áµÈ ¾Æ³¯·Î±× ¿Âµµ¼¾¼­·ÎºÎÅÍ °ªÀ» ÀнÀ´Ï´Ù.
//Á¤ÇØÁø °úÁ¤À» ÅëÇØ ¼¾¼­¿¡¼­ ¹ÞÀº °ªÀ» ¼·¾¾¿Âµµ·Î º¯È¯ÇÕ´Ï´Ù.
voltage = (sensor*5000)/1024;
voltage = voltage-500;
celsius = voltage/10;

//½Ã¸®¾ó¸ð´ÏÅÍ¿¡ ¿Âµµ°ªÀ» Ãâ·ÂÇÕ´Ï´Ù.
Serial.print(celsius);

¿Âµµ°ªÀ» ¹Þ¾ÒÀ¸¸é ÀÌÁ¦ ÀÌ °ªÀ» °ÔÀÌÁö¿¡ Ç¥ÇöÇϱâ À§ÇØ ¼­º¸¸ðÅͰ¡ ¿òÁ÷ÀÏ ¼ö ÀÖ´Â °¢µµ·Î º¯È¯½ÃÄÑ¾ß ÇÑ´Ù.

À§¿¡¼­ ¸¸µç ÇÁ·ÎÁ§Æ® À̹ÌÁö¸¦ º¸¸é ¾Ë°ÚÁö¸¸ °ÔÀÌÁö¿¡´Â 0ºÎÅÍ 30±îÁöÀÇ ¿Âµµ¸¦ Ç¥½ÃÇÒ ¼ö ÀÖµµ·Ï Çß°í, ¼­º¸¸ðÅÍ´Â 0µµºÎÅÍ 180µµ±îÁö ¿òÁ÷ÀδÙ. µû¶ó¼­ 0~30ÀÇ °ªÀ» 0~180»çÀÌÀÇ °ªÀ¸·Î º¯È¯½ÃŰ´Â ÀÛ¾÷ÀÌ ÇÊ¿äÇÏ´Ù. ÀÌ ÀÛ¾÷Àº ¾ÆµÎÀ̳ëÀÇ map()À̶ó´Â ÇÔ¼ö¸¦ ÅëÇØ ÇÒ ¼ö ÀÖ´Ù.

¿¹¸¦ µé¾î celsiusÀÇ °ªÀÌ 20ÀÌ µé¾î¿À¸é ¼­º¸¸ðÅÍÀÇ °ªÀº 60µµ·Î ¿òÁ÷À̰í, celsiusÀÇ °ªÀÌ 10ÀÌ¸é ¼­º¸¸ðÅÍÀÇ °ªÀº 120µµ·Î ¿òÁ÷ÀÌ°Ô µÈ´Ù.

//À¯È¿°ªÀ¸·Î ÀÐÀº 0ºÎÅÍ 30»çÀÇ °ªÀ» 180ºÎÅÍ 0»çÀÌÀÇ °ªÀ¸·Î º¯È¯½Ãŵ´Ï´Ù.
int angle = map(celsius,0,30,180,0);


º¯È¯µÈ °ªÀÌ 0~180»çÀÌÀÇ À¯È¿ÇÑ °ªÀ̶ó¸é ÀÌÁ¦ ¼­º¸¸ðÅ͸¦ Á¦¾îÇÑ´Ù.

//¼­º¸¸ðÅÍ¿¡ ÁÖ¾îÁø °¢µµ°ªÀÌ 0ºÎÅÍ 180»çÀÌÀÇ À¯È¿ÇÑ °ªÀÏ °æ¿ì ¼­º¸¸ðÅ͸¦ Á¦¾îÇÕ´Ï´Ù.
if(angle >=0 && angle <=180) {
myservo.write(angle);
delay(1000); //1Ãʸ¶´Ù ¹Ýº¹ÇÏ°Ô µË´Ï´Ù.
}


¸¶Ä¡¸ç

ÀÌ ÇÁ·ÎÁ§Æ®´Â ¿Âµµ¼¾¼­°¡ ¾Æ´Ñ ´Ù¸¥ ¼¾¼­¸¦ »ç¿ëÇÏ¿© ´Ù¸¥ ÇüÅÂÀÇ ÇÁ·ÎÁ§Æ®·Î º¯Çü½Ãų ¼ö ÀÖ´Ù. ¿Âµµ¼¾¼­°¡ ¾Æ´Ñ ½Àµµ¼¾¼­¸¦ »ç¿ëÇØ º¼ ¼ö ÀÖ°í, ´õ ³ª¾Æ°¡ WiFi¸ðµâÀ» »ç¿ëÇÏ¿© À¥¿¡¼­ ³¯¾¾¸¦ ¹Þ¾Æ¿Í ³¯¾¾¸¦ ¾Ë·ÁÁÖ´Â ¾Ë¸²ÆÇÀ¸·Î »ç¿ëÇÒ ¼ö ÀÖ°í ¾Æ´Ï¸é ¾Ð·Â¼¾¼­¸¦ »ç¿ëÇØ¼­ ÀÚ¸®ºñ¿òÀ» üũÇÏ´Â ¿ëµµ·Îµµ ¸¸µé¾î º¼ ¼ö ÀÖ´Ù.

¾Æ·¡ »çÁøÀº ÄÚÄÚ¾ÆÆÕ¿¡ ¿Ã¶ó¿Â ÇÁ·ÎÁ§Æ®·Î ¾Ð·Â¼¾¼­¸¦ »ç¿ëÇÏ¿© »ç¿ëÀÚÀÇ ÀÚ¸®ºñ¿òÀ» üũÇÏ´Â ÇÁ·ÎÁ§Æ®ÀÌ´Ù.

   
 

¸ðµâÀÌ °£´ÜÇÑ °ÍÀÌ¶óµµ ¾ÆÀ̵ð¾î¸¸ ÁÁ´Ù¸é ¾ó¸¶µçÁö ½Ç»ýȰ¿¡¼­ À¯¿ëÇÏ°Ô »ç¿ëÇÒ ¼ö ÀÖ´Â ÇÁ·ÎÁ§Æ®¸¦ ¸¸µé¾îº¼ ¼ö ÀÖ´Ù. ¹°·Ð ²À À¯¿ëÇØ¾ß ÇÏ´Â ¹ýÀº ¾ø´Ù. Àç¹Ì¿Í Áñ°Å¿ò ¶ÇÇÑ ¾ÆµÎÀ̳뿡¼­ Ãß±¸ÇÏ´Â ¹æÇâÀ̱⠶§¹®¿¡ ¾û¶×ÇÏ´õ¶óµµ ÁÁ´Ù.

À§ ÇÁ·ÎÁ§Æ®¿¡ ´ëÇÑ ±ÛÀº http://kocoafab.cc¿¡¼­µµ È®ÀÎÇÒ ¼ö ÀÖ´Ù.

 


[Tutorial] Easy-to-follow Orange Board Tutorial (11)
Making a Temperature Measuring Device Using Orange Board

Arduino means a close friend in Italian and is a typical piece of open-source hardware. It is a mini board made for anyone to easily access an Embedded field, which has been hard and difficult to approach. The Arduino Orange Board to be used in this tutorial is a Korean version of Arduino boards.

The distribution of Arduino boards triggered the spread of open-source hardware and significantly contributed to the spread of Maker Culture as well. Recently, conglomerates such as Intel and Microsoft have also started to enter this open-source hardware market. This reflects that the potential of open-source hardware market has grown likewise.

1) Project Outline

The project that we’ll be working on today is a thermometer made using a TMP36 analogue temperature sensor and a servomotor. Generally, when you think of thermometers, the mercury thermometer comes to mind, but the one that we’ll be making now uses a needle to point to a graduation on a board to tell you the temperature.

   
 

Existing Arduino tutorials often have exercises that have you use the temperature sensor and LCD module to simply print out the value. Instead of simply showing a printed value on a display, we will be making a unique thermometer that indicates the temperature with a needle, just like a clock.

The servomotor and temperature sensor to be used in this project are all easy modules to find, and as existing tutorials have already explained how they are used, operating them should be a snap. Furthermore, even the Arduino IDE sample codes support this exercise.


List of Items Required
   
 

Connecting to Hardware

Breadboard
¡Ø When connecting the TMP36 temperature sensor, make sure to confirm the flat side and the round side, and make sure to verify the colors of the lines when connecting the servomotor. In most cases, the black line connects to the GND, red line to VCC, and white or yellow line to the digital pin.

   
 

Electronic Circuit Diagram
   
 

The project that you can see in the figure is using a dashboard taken from a computer with a range set between 0¡É ~ 30¡É. (If you are making one yourself, then this range can be adjusted. However, this requires modifications to the code as well.)

   
 

Attach the servomotor to the back and poke a hole in the middle of the panel to connect the servomotor to the needle, allowing the needle to move in tandem with the temperature.

   
 

Source Code


#include <Servo.h>
//Declare a variable.
float voltage = 0;
float sensor = 0;
float celsius = 0;
int angle = 0;

Servo myservo; //Declare servomotor object.

void setup() {
myservo.attach(4); //Set the servomotor as digital pin 4.
Serial.begin(9600); //Initialize the serial communication and set the communication speed at 9600bps.
}

void loop() {
sensor = analogRead(0); //Read the value from the analogue temperature sensor connected to analogue pin 0.
//The value read from the sensor through the chosen process will be converted into Celsius (¡É).
voltage = (sensor*5000)/1024;
voltage = voltage-500;
celsius = voltage/10;
//Print the temperature value on the serial monitor.
Serial.print(celsius);

//Change the measured temperature value into the angle that the servomotor will move by through the map variable.
//The Celsius value only recognizes values between 0 and 30 as valid values.
//Change the values from 0 to 30 read as valid values to values from 180 to 0.
int angle = map(celsius,0,30,180,0);
//Print the angle of the servomotor on the serial monitor.
Serial.print(angle);
Serial.println(" degree");
//If the angle value given to the servomotor is a valid value from 0 to 180, the servomotor will be controlled.
if(angle >=0 && angle <=180) {
myservo.write(angle);
delay(1000); //This is repeated every 1 second.
}
}

The code is fairly simple for a project. First, make sure that the temperature sensor value is read as the initial step. The code below is the part that reads the value from the temperature sensor connected to the analogue pin 0 and then converts the value into Celsius.

sensor = analogRead(0); //Read the value from the analogue temperature sensor connected to analogue pin 0.
//The value read from the sensor through the chosen process will be converted into Celsius (¡É).
voltage = (sensor*5000)/1024;
voltage = voltage-500;
celsius = voltage/10;

//Print the temperature value on the serial monitor.

Serial.print(celsius);
 

Once you have received the temperature value, you must then change the value into the angle that the servomotor can move by in order to display the value on the gauge.

As you can tell from the image of the project created above, the gauge has been set to display temperature between 0 and 30, while the servomotor moves from 0 degrees to 180 degrees. Therefore, the values from 0 to 30 must be changed to values from 0 to 180. This process can be done through Arduino’s map() function.

For example, if the Celsius value is 20, the servomotor’s value will move by 60 degrees, and if the Celsius value is 10, the servomotor will move by 120 degrees.

//Change the values from 0 to 30 read as valid values to values from 180 to 0.
int angle = map(celsius,0,30,180,0);
 

 
If the changed value is a valid value between 0~180, the servomotor will now be controlled.

//If the angle value given to the servomotor is a valid value from 0 to 180, the servomotor will be controlled.
if(angle >=0 && angle <=180) {
myservo.write(angle);
delay(1000); //This is repeated every 1 second.
}


Conclusion

You can use a sensor other than the temperature sensor used in this project to change it into a different type of project. You can experiment with a humidity sensor, go even further beyond and use a WiFi module to use it as a notice board that retrieves the weather from the internet and informs you, or use it as a pressure sensor to check for absences.

The picture below shows a project uploaded onto kocoafab that uses a pressure sensor to see if the user is away from the keyboard.

   
 

Even if the module is simple, as long as the idea is good, you can create programs that are practical in real life. Of course, there’s no rule that states that the projects have to be practical. Arudino strives for fun and enjoyment as well, so it’s perfectly fine to make something bizarre or whimsical as well.

More on the project above can be found at http://kocoafab.cc as well.

 

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