Apr 27, 2010 #1 V vc Newbie level 1 Joined Apr 27, 2010 Messages 1 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location india Activity points 1,287 hi,plz tell me that how can i configure lm 35 with at89c2051 and plz send the necessary links ,from where i can study the circuit diagram.
hi,plz tell me that how can i configure lm 35 with at89c2051 and plz send the necessary links ,from where i can study the circuit diagram.
Apr 28, 2010 #2 I IanP Advanced Member level 7 Joined Oct 5, 2004 Messages 7,929 Helped 2,311 Reputation 4,624 Reaction score 531 Trophy points 1,393 Location West Coast Activity points 66,416 The AT89C2051 has analog comparator but it’s really not enough to practically measure temperature with the LM35 .. You need A/D converter, for example ADC0804 (see link below) or PCF8591 .. http://www.docstoc.com/docs/9489353/microcontroller-based-temperature-sensor/ Another option is to change the temperature sensor from LM35 to DS1820 which is reasonably easy to interface with any microcontroller .. see picture below .. http://embedded-system.net/interfacing-dallas-ds1820-temperature-sensor.html IanP :|
The AT89C2051 has analog comparator but it’s really not enough to practically measure temperature with the LM35 .. You need A/D converter, for example ADC0804 (see link below) or PCF8591 .. http://www.docstoc.com/docs/9489353/microcontroller-based-temperature-sensor/ Another option is to change the temperature sensor from LM35 to DS1820 which is reasonably easy to interface with any microcontroller .. see picture below .. http://embedded-system.net/interfacing-dallas-ds1820-temperature-sensor.html IanP :|
May 3, 2010 #3 M mishra12 Advanced Member level 2 Joined Feb 18, 2009 Messages 672 Helped 136 Reputation 272 Reaction score 122 Trophy points 1,323 Location some where left alone Activity points 4,915 ya i agree but you also can use ds 1621 temp sensor.your choice.
May 3, 2010 #4 X xxtigerxx Advanced Member level 1 Joined Jun 5, 2001 Messages 441 Helped 38 Reputation 76 Reaction score 32 Trophy points 1,308 Location Greece Activity points 2,890 for the lm35 just you have to connect it to to adc. 10mV/C. it is simple but you must have a good pcb design. The DS1820 is immune to the pcb design.
for the lm35 just you have to connect it to to adc. 10mV/C. it is simple but you must have a good pcb design. The DS1820 is immune to the pcb design.