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Hi John,
That's a very old post now... I did manage to solve the problem eventually not sure what the actual problem was but thanks for trying to help...
OK, I have now stripped out all of the other code, and gone back to a previous working section of code, that basically tests the functionality of the LCD...
But still I am getting nothing on the display...
All pins are wired correctly...
I'm attaching the code I am using to see if anyone can...
Hi there,
I've just etched a new PCB using the attached schematic, but since populating the board the LCD no longer works, yet the code and everything else was working fine on the prototype rig...
I have the PIC 16F877 working as I have RS232 communications, but just unable to get anything to...
Arghhh...
I'm now in the preverbail, and desperate for some help and assistance with this...
I found that a 12th Track thickness was way too small for a home etch, so I'm trying to increase the track thickness but can only do it track by track, is there a quicker way?
Also is a track...
So if I have the Schematic Sorted, can I import that to a different package to lay it out?
Or does someone fancy laying out for us, and i'll pay them for it...
Added after 30 minutes:
ARGhhhh...
Why can I not move a sinlge track with out it going out of shape...
Can someone please remind...
Hi Everyone,
It's been many years since I last used Proteus, the version I am using I brought in 2001 or there abouts, but with a change in job came a change in software and for years I used Ulticap and Ulitboard before it changed to mulitisim and ultiboard...
But the computer it was installed...
Looks like I have a couple of decent options to try...
I like to over engineer rather than under engineer just in case there is ever a problem, I know the design should with stand it...
Also the Lead Acid Battery is Second Hand, so not sure how much life is in it, but it has taken a 6 hour...
Not added it yet...
At the moment I am still running off a bench power supply as I need to sort this side of things...
So It will be running off a 12V Lead Acid Battery... with 8off AA batteries acting as a back up power supplu...
Added after 2 minutes:
This is the actual power supply for...
No... I don't need to measure battery temperature or current...
Just need to see what the actual voltage is and when it reaches a certain voltage issue a warning on the LCD or illuminate a LED and switch to the battery back up allowing me time to re-charge the battery and plug it back in...
So how do you propose I do that...
Should I use a Potential Divider circuit or is there a better method that I could use that is more accurate, such as perhaps using a LM398 comparator or other such device...
Thanks for that...
Could I use a Shunt Resistor in Series with the Battery and load (circuit) and measure the voltage across it...
Need an accurate way of measuring from 12.5v to 11.0v as I beleive this is the max and min range of the battery... well 11.35v I think is the actual cut off point...
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