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Hi,
Not exactly new but sporadic (and ancient) Have dumped code using RA2 and after more study produced the following using rb4. Amost works! i can now sequence through the patterns if I allow...

Thanks for suggestion. I am stuggling rather with the pseudo code but have found some code in another post and copied it with just one modification i.e.the line ansel = 0 in the original code would...

Hi
My recent post on power saving has unfortunately notv produced a solution to my problem and I have therefore tried a different approach which has produced problems which I hope are easier to...

Thanks for the help folks. I'm afaid Marks that your circuit uses devices not readily available to me and is alittle more complex than I wanted - many thanks for your trouble however. Ardhuru --...

My recent successes with my Christmas star have got me a request from a neighbour for lighthouse flashing circuit for his model lighthouse. No problem with flashing routines,\however the requirement...

Earlier this year I spent hours unsuccesfully trying to operate a serial lcd with no success at all & assuming it was a dud lcd I gave up.
I now need to cotrol a quadravox sound module with serial...

Thanks Joe. As I said in previous post the thing is working OK now. Didn't know about the need to change the inc file for the internal oscillator, but I have now done so and relieved to find it still...

I don't seem to be getting the hang of this comparator business. I have a progamme (apparently successfully used by its designer) which sets out tu use a comparato to detect a low voltage pulse (in...

Thanks Bruce. It's back in even as we speak ! Belt, braces and a piece od string as they say !
Cheers

Hi,
Thanks for the suggestions folks. tried them all one by one and got nowhere, then noticed that /MCLR was checked in PicKit 2. Unchecked it and everything worked like a dream ! I then worked...

I do not believe this ! After a spot of tinkering and adding to the circuit this am it has suddenly gone unstable again (It only operates when finger approaches or touches PIC) stripped circuit down...

Thanks for that Bruce - I should have asked matron to check my post - forgot to attach the code, Just arrived back from the village pub and tried Joseph's 4.7k pull up on mclr and lo and behold... it...

Having struggled unsuccesfully to get a simple pendulum driver program working I have gone back to basics in order to check out my programming. i have built a basi cbreadboard with a 16f628A It...

Hi, Thanks for quick reply ! I have tried the changes you suggest but still no signs of life. I should perhaps have mentioned that I am using a Pickit 2 to proram the 16f628a and have it directly...

I think I'm doing something daft again ! I have built a circuit by Bill Sherman which operates a "perpetual" pendulum. The circuit specifies the 16 F 628. I have used the 16f628A the circuit should...

For the last two years you guys have helped to get my Christmas star operational. Once again I have dug out the source code and tried to compile it but get errors. The start of the code (which is...

Yes I am ! ...and I just chickened out .. Connected the LCD to the default pins on Ports A and B and it now works. I just have now to modify the programs that use those ports unless I can figure...

Thanks ... I will pour a stiff drink and study the data sheets ! I checked that both chips had an 8 bit D port and a 3 bit E port and connected the lcd to them. I first checked that I could flash...

Recently bought Sandhu book on programming the 16F877A and trying to adapt programs to run on the 16F887 which appears pretty similar but am having problems. Nothing but black squares on the lcd. I...

OH dear ! I Knew it was going to be something dumb ! Thanks a lot Alain, the christmas star is successfully reprogrammed. One small electronic problem to sort out and the wise men will be heading...

Hi all
You good people were kind enough last year to help me get my Christmas star working. Haning lost the source code I have retrieved the copy I sent to this forum, entered it into a newly...