Hi all, i am just want to measure the room temperature using LM35 temp. sensor the pic16f877a will change the state of one of its ports depending on the reading of LM35.
For example: portb is used to switch the pump (fire fighter) on and off when the LM35 reads temp. above 35degree and off when the temp. is below 35 degree.
Thanks
Hi all, i am just want to measure the room temperature using LM35 temp. sensor the pic16f877a will change the state of one of its ports depending on the reading of LM35.
For example: portb is used to switch the pump (fire fighter) on and off when the LM35 reads temp. above 35degree and off when the temp. is below 35 degree.
Thanks
I also have the same project, but not built yet. To do this I made a comparison between LM35 and MCP9701 (Microchip temp sensor). I prefer the last sensor due to highest accuracy and better price.
Another point I would like to do is the impedance convertion until ADC pins input (10kΩ). I intend to put an operational amplifier between ADC and temp sensor to convert the impedance of MCP9701 from 20Ω to 10kΩ.
Hi all, i am just want to measure the room temperature using LM35 temp. sensor the pic16f877a will change the state of one of its ports depending on the reading of LM35.
For example: portb is used to switch the pump (fire fighter) on and off when the LM35 reads temp. above 35degree and off when the temp. is below 35 degree.
Thanks
Hi all, i am just want to measure the room temperature using LM35 temp. sensor the pic16f877a will change the state of one of its ports depending on the reading of LM35.
For example: portb is used to switch the pump (fire fighter) on and off when the LM35 reads temp. above 35degree and off when the temp. is below 35 degree.
Thanks
Hi i'm new to this whole experience i have a project and i'm banging my head on the wall for 4 hours now can someone plz help me:
i have to program a PIC 16f77 on a washing machine program or a part of it i need the code for seting a pin in out doesn't matter whitch one for a watter pump and after for mesuring a temprature of 60 dagrees celsius till that temprature i have to set another pin as the rezistence to the value 1 when the tempreture reaches 60 dagrees the pin from the reistance goes back to 0
the frequencey is 4mhz and the time would be 40 min that's if i;m not mistaking 40*60*4000000=9600000000 instructions plz i really need some help i can't figure it out on my own and sry for the bad english if someone has any idea i could use the help