Hi !
Seems that you have a great knowledge about talk you talk, had much experience and made a remarkable progress in this field of area, a embedded systems, a field you are so good at.
There is a great possibility that i may need some help, an advise maybe .... from someone experienced as you are, Bobi. Id be very grateful
Iv had very little experience in a area, id like to be part of and to take on a project for a company im working at, school where im learning and for myself as a experience i so much need.
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The project...
I was given a opportunity to design a "new model" "heat system automatic regulator". The existing one got some disadvantages, because it is based on OP amps, it takes too much time to calibrate and to produce.
The purpose of this devise is to operate a valve considering data coming from sensors. ( i have added a image: a body of devise )
I have some experience writing a program for MCU. Because of that, i bealive that i can manage a program, a coding part, but i got almost no experience in a hardware part.
I badly need help to make choices for a value based product complication/design. Choices like: Which MCU to choose, will it handle the application, could it be a bottleneck in application work flow ... and so on.
Here are some "must be" features and functions.
Code:
----- 3 ADC + V ref* maybe it would be good idea to change sensor, atm. it is a calibrated rtd.
----- 1 IO pin to drive MOSFET to drive DC motor with gear mechanism ( probably wont change)
----- 2 or 3 IO pins for manual communication with master controller
----------[b] NO UI. [/b]---------
------ 4 ADC for potentiometers for setup purpose.
------ 1 or 2 pin/s for indication leds
--------- [b]IF GLCD or Char. LCD[/b]---------
----- At least 14 pins to drive GLCD
----- At least 5 pins for UI, some push buttons maybe.
--------- [b]IF GLCD with touchscreen[/b] -----
----- Touchscreen controller :(
----- No need for buttons.
So much more and more better could be done using user interface.
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There is already something done, it is very little, barely started project and there was already a problem ... There were some progressive floating point calculations used, (dont know why, have seen it), but the bottleneck was RAM. I really have no idea why mcu cant do a OP amp. application job and im not sure it was done as good as it might be done.
Previously i had no experience with GLCD, so i got no idea, will 8bit PIC MCU hande UI or not.
.......................................................
Im still very unsure about many, many things. Im not sure that i gave description clear enough, not sure about what i want, what i need and how will i accomplish whole thing.
Id be very grateful and appreciated if you & you people will be even a smallest part of this project.
Even if it is just a opinion, Your way of doing it, small advise or a comment about things you know about, I do not.
"All i know,i know nothing" So, Please, be so good and contribute anything, anything i may find useful even for smallest bit.
I really want it, i really want this project to be done as good as possible. Id try as hard as i need to achieve that AND I believe that i can do it with Your help and appreciation
For my my side ill do all i could. Ill try to reply as fast and as good as i can.
Ill definitely send, to You later, a updates about progress i made as pm or mail, just considering you as interested, to hear about it and fact what you were a part IN it.
Have a Good day !