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Hi all
I am interfacing GPRS using sim300z through hyperterminal .In hardware level , I am using Tx , Rx & GND pin of sim300z.I am using airtel sim card.
Evey command is working fine except AT+CIICR command
when i type this command , modem is not responding, What is the problem ?
please...
Re: Data logger
Hi mpardinho
Thanks for reply.
Ye , I need source code. So it will be easy for me that how to read /write com port and save in txt ?
Can u send me source code for it?
Thanks
Can anyone send me the c code of AGA report no.8 [ American gas association-AGA report no.8]. Original code is given in fortran. It is hard to me to convert in C language for microcontroller[PIC]
Hello every body
I am using PIC18F4620. It has only 4K Byte RAM . But In my Project, I need more than 16K Byte RAM. I must be used this microcontroller in this project. So Can Anyone help me How to interface External RAM. Or IS this possible to interface External RAM with PIC18F4620?
aga report
Can anyone send me the c code of AGA report no.8 ? AGA report no.8 original code is given in fortran. It is hard to me to convert in C language for microcontroller[PIC]
Can anyone help me how to design analog active 2nd order butterworth filter [unity gain] and how to select the value of capacitors and resistors and what is the criteria that we can design the filter? Actually i am measuring the pressure.So i want to implement in before conditioning circuit...
op amp conditioning ciruit
Thanks VVV for it .
What is the meaning of an rN-55 or RN-60 type resistor
Added after 10 minutes:
why we use 2nd order butterworth low pass filter?
Because i saw most of conditioning circuit uses this filter
conditioning circuit for 4 - 20ma output
hello every one
I need conditioning circuit diagram using op-amp which input 4-20mA to output 0-3V . So Can any one help me ?It urgent , i am working on this .
Hi every one .
Can anyone help me how to design 4-20mA input (output of pressure sensor) to give me 0-5v output for adc.Because i want to read it in microcontroller.
Added after 1 hours 14 minutes:
I Need conditioning circuit using Op-Amp for this 4-20mA input to...
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