NewGeek
New Member
I am designing a project with an LCD screen that displays inputs from two sensors: temperature and fluid level.
The fluid level sender is a standard automotive 33-240 Ohm variable resistor.
Im trying to decide what to use for the temp sensor. Analog or digital? The only real restriction is that it must be small TO-92 size or smaller, for a remote mount. Are there any inexpesive digital sensors this small?
Should I use a PIC with A2D or just do the A2D in my program? Keep in mind that I will have to learn how to program A2D anyway because of the fluid level sender. Should I just use a thermistor and figure out how to write code? It doesnt need to be super accurate, 1-2 degrees is fine.
Currently Im learning to program PIC16F84, is there a better PIC choice that is just as easy to learn?
I imagine that the only way to do analog-to-digital in software is with a lookup table, correct?
Can anyone help point me in the right direction for selecting components?
Primary criteria are: easy to program, low cost.
Im also looking for help with code, Ive got the LCD part pretty well figured out, now I just need help with the A2D.
Will I need some type of comparator for the analog sensors (16F628?)?
BTW, I already have some PIC16F84 and F628. Which is probably what I'll end up using unless there are major disadvantages.
Thanks to all.
The fluid level sender is a standard automotive 33-240 Ohm variable resistor.
Im trying to decide what to use for the temp sensor. Analog or digital? The only real restriction is that it must be small TO-92 size or smaller, for a remote mount. Are there any inexpesive digital sensors this small?
Should I use a PIC with A2D or just do the A2D in my program? Keep in mind that I will have to learn how to program A2D anyway because of the fluid level sender. Should I just use a thermistor and figure out how to write code? It doesnt need to be super accurate, 1-2 degrees is fine.
Currently Im learning to program PIC16F84, is there a better PIC choice that is just as easy to learn?
I imagine that the only way to do analog-to-digital in software is with a lookup table, correct?
Can anyone help point me in the right direction for selecting components?
Primary criteria are: easy to program, low cost.
Im also looking for help with code, Ive got the LCD part pretty well figured out, now I just need help with the A2D.
Will I need some type of comparator for the analog sensors (16F628?)?
BTW, I already have some PIC16F84 and F628. Which is probably what I'll end up using unless there are major disadvantages.
Thanks to all.