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Re: PT100 and ATMEGA
Dear FVM 2kB of flash isn't a huge cost for me as i dun have so many tasks to b taken from controller. The problem is how can i make table in C and how to access its values assuming i have calculated current resistance by taking voltage and applying ohms law. How will my...
Re: PT100 and ATMEGA
Basically i was interested to know how can i implement PT100 table in programming. I m programming in C using Codevision AVR. How can i do this. Give me an idea
PT100 and ATMEGA
Guyz i have been asked to develop a temperature controller using PT100 and ATMEGA8515. So far i have developed a constant current source of 10mA and will read analog voltage using Internal ADC of micro controller. After reading voltage i can have current resistance of PT100...
Dear guyz, currently i have installed a temperature controller (Fenwal) with PWM output which drives SSR to switch heater on/off in order to maintain setpoint. However actually the temperature deviates by 4-6 degree. What could be the prblem. How can i over come this issue.
Thanks
step 7 timer
I have several ON delay timers. Every time i have to change the delay time i have to search for each timer and change their time.
All of them have same delay time.
I want to call the delay time from a db variable so that i only have to change the time in db. How to do it? I have...
Re: Contolled +-10V required
Hey i got stuck in a problem. I need to interface a system with PLC. I got analog module for PLC which output 0-10V DC. But i need negative voltage on output. i-e when i put 3volts the converter must negate it to -3Volts. Plz suggest me IC or any circuit for that...
ethernet microcontroller
Dear i want to communicate my microcontroller via ethernet to achieve long distace communication. Please some one guide me suitable hardware available in market (as i dun wanna stuck in it) and recommend the best tutorial to develop the software for it.
Thanks
s7-300 interrupts
Guys i just wanted to learn how to invoke time delay interrupt in s7-300. According to sheet OB20 is a time delay interrupt which i included in my project. Than added SFC32 (STRT_INT) in my main program to start the time delay interrupt and wrote a simple program in OB20 which...
Re: Position Sensor Issue
Hey i was previously working on Transducer whose datasheet is attached. However due to unavailability of data i wasn't able to program it. However using reverse Engineering i managed to develop a software for this particular sensor. Haven't checked it yet on machine...
Position Sensor Issue
Hey Professional Guys, Plz suggest me a suitable sensor(Transducer) to interface with AVR controller to sense the position of the object with in the range of 1 meter. There are many available on internet but mostly unavailable in PAKISTAN. So xperts from PAKISTAN plz...
hopper gate valves
For a while i thought to hire such a contractor.. But i m afraid i don't need it any more. I managed to solve this problem my self.
And by the way i wasn't expecting to post complete program. Flow chart or any such sort of help might have solved my problem rather earlier...
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