{"id":1863,"date":"2024-06-28T06:35:07","date_gmt":"2024-06-28T06:35:07","guid":{"rendered":"https:\/\/iotthinghub.com\/?p=1863"},"modified":"2024-08-11T17:13:53","modified_gmt":"2024-08-11T17:13:53","slug":"light-emitting-register-temperature-sensor-lm35","status":"publish","type":"post","link":"https:\/\/iotthinghub.com\/?p=1863","title":{"rendered":"Light Emitting Register & Temperature Sensor LM35"},"content":{"rendered":"\n

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In this program we use an LDR to read the light condition. The connection diagram of LDR as follow-<\/p>\n\n\n\n

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LDR is nothing but a register that vary with light condition. At low light resistance is high and at high light the resistance is low. Temperature sensor LM35 is a digital temperature whose Vout<\/sub> value change according to temperature. The sensor has reading +10mV\/\u00b0C. Since our ADC has a resolution 5\/1024=4.88mV so the desire temperature is<\/p>\n\n\n\n

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The main program-<\/p>\n\n\n

\n  #include<avr\/io.h>\n  #include<stdio.h>\n  #include<util\/delay.h>\n  #include"adc.h"\n  #include"lcd.h"\n  uint16_t value,tempa;\n  float temperature;\n  char str[20];\nint main(void)\n  {\n   LCD_INIT();\n   adc_init();\n   LCD_Clear();\n   DDRB|=(1<<DDB1);                     \/\/LOAD PORT\n   _delay_ms(10);\n   LCD_Clear();\n   while(1)\n   {\n     value=read_adc(0);\n     tempa=read_adc(1);\n     temperature=(tempa*4.88)\/10;\n     sprintf(str,"%d   %.2f",value,temperature);\n     if(value<=400)\n\t    {\n\t      PORTB |=(1<<PINB1);\t\t\t \/\/in dark condition glow\n\t    }else{\n\t      PORTB &=~(1<<PINB1);\t\t\t \/\/else off\n\t    }\n     LCD_write_string(1,1,"ADC  Temperature");\n     LCD_write_string(1,2,str);\n   }\n return 0;\n}\n<\/pre><\/div>\n\n\n
Read all dark condition of light and your desire condition inside if loop. For proper connection diagram see the proteus simulation.<\/p>\n\n\n\n
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download<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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Sensor clibration.rar<\/a><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
In this program we use an LDR to read the light condition. The connection diagram of LDR as follow- LDR is nothing but a register that vary with light condition. At low light resistance is high and at high light the resistance is low. Temperature sensor LM35 is a digital temperature whose Vout value change […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[],"class_list":["post-1863","post","type-post","status-publish","format-standard","hentry","category-adc"],"_links":{"self":[{"href":"https:\/\/iotthinghub.com\/index.php?rest_route=\/wp\/v2\/posts\/1863","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iotthinghub.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iotthinghub.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iotthinghub.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/iotthinghub.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1863"}],"version-history":[{"count":9,"href":"https:\/\/iotthinghub.com\/index.php?rest_route=\/wp\/v2\/posts\/1863\/revisions"}],"predecessor-version":[{"id":2623,"href":"https:\/\/iotthinghub.com\/index.php?rest_route=\/wp\/v2\/posts\/1863\/revisions\/2623"}],"wp:attachment":[{"href":"https:\/\/iotthinghub.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1863"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iotthinghub.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1863"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iotthinghub.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1863"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}