Need "PIC16F84A" Controler schematic Advice...

[Kyo_89]

Hi Every one,

I am looking to make a controler for My pop up headlights on My car,
just for kicks as I like projects. So I have decided on a PCB board
micro controler DIY project I found online for My car but here comes the bad part
the schematics for the PCB are no longer hosted on the website
I dont know how to draw up the schematics for the Board or for the right parts
but after alot of searching around i have managed to draw up a set of schematics.


Now I Fully plan to use The programe and all the details from the DIY website..

what I would like to know is will this schematic I drew up work for the DIY project
on the Guy's 'website here is a link to the Project I am taking a stab at

http://members.dslextreme.com/users/...leepyeyes.html

be 100% Blunt with me this is my very first project like this and I welcome all and any Advice

when I get all the details worked out I will build it but for my first build I am making a pic progamer...


///On another Forum a member told me (and i qoute)///

Looks good to me, assuming the unlabeled resistors are within a reasonable value. Not sure about the one on drain. You shouldn't need those.

One tip though: The use of the PIC isn't all that great. What I mean is, PORTB looks much better for input with weak pull-up and int-on-change. Many people put resistors on switches, but you can save space/wire by using WPU. Just replace the 5V with ground, and in code enable WPU on PORTB and reverse the branch logic
///end qoute///

So given that advice i drew up this set of schematics...

How is this compaired to my first attempt??

Then i was emailed a link to this forum
so i am posting the same question I am completly new to all this only been reading up on it the last few days..

Thanks for all your advice and help

Cheers
Kyo

[mister_e]

The second one is way better because it will blow your PIC16F84, and that's all a over 10-15 years obsolete PIC deserve to me

Seriously, keep the first one, it should work. However your code is in ASM, and we use PBP compiler here. No big deal for such simple project, but you have no chance... well next to none, to have help on asm here.

You really don't want to build a PIC programmer theses days. Do yourself a big flavour and buy at least a PICKIT 2 from MicroChip.

NONE of those DIY programmer are reliable anyways unless you still play and work with Windows 98