Search found 11 matches

by CrazyBillyBob
Thu Aug 20, 2009 4:07 pm
Forum: Computer Programming
Topic: Pic Assembly Q
Replies: 11
Views: 3586

Re: Pic Assembly Q

Speaking of the Timer interrupt does anyone have a good, documented example of one? Microchip seems to note they are used allot, and then assumes you just know how to do it.... I'm not that good. I've got the prescaler figured out, and can load and reset the timer but I stuck on the interrupt part...
by CrazyBillyBob
Wed Aug 19, 2009 3:57 pm
Forum: Computer Programming
Topic: Pic Assembly Q
Replies: 11
Views: 3586

Re: Pic Assembly Q

At some point in the future I'd love to work with the USB interface and a PIC I've got some Ideas that being able to easily connect to a PC for adjustments, data retrieval, and control would be great but for this project it's over kill.... Plus I've not got the skills just yet to tackle a bigger pro...
by CrazyBillyBob
Wed Aug 19, 2009 2:16 pm
Forum: Computer Programming
Topic: Pic Assembly Q
Replies: 11
Views: 3586

Re: Pic Assembly Q

That sounds like a way better method then what I was first trying to do! I'm going to have to do some research into timers to figure out what the prescaler needs to be set at to get a 1ms tick. This is good stuff!! I've got a couple 18F's here too... there just not on a nice neat board. I'm not marr...
by CrazyBillyBob
Tue Aug 18, 2009 11:38 pm
Forum: Computer Programming
Topic: Pic Assembly Q
Replies: 11
Views: 3586

Pic Assembly Q

Ok I'm working on a project where I have a button, and I want to keep track of how many times it's pushed, even if the output is on. Because each time it's push I need to set an output high for 10sec. I'm getting hung up on the polling V Interrupt as my first design is using simple loops to poll the...
by CrazyBillyBob
Wed Oct 29, 2008 12:20 pm
Forum: General Discussion
Topic: DC to DC Voltage stepup
Replies: 9
Views: 1970

Thanks for all the info. I was looking in to this for a no electronic friend who asked me If I knew how he could do this, I didn't but was sure you all would point us in the right direction.... You Did! Based on cost he's going with on of the PSU's like those listed by jollyrgr. Even though he didn'...
by CrazyBillyBob
Wed Oct 29, 2008 12:16 pm
Forum: Computer Programming
Topic: PIC's and C Where to Start
Replies: 16
Views: 5735

I've used some of the Atena uC from Kronos Robotics (Mike, does some article for Servo, and N&V as well) Like them for easy of use but the Bootloader used up too much space and limited what kind of programs I could write. I've been reading Smiley's articles on the Amtel butterfly, one of the big rea...
by CrazyBillyBob
Wed Oct 29, 2008 11:13 am
Forum: Computer Programming
Topic: PIC's and C Where to Start
Replies: 16
Views: 5735

PIC's and C Where to Start

In a quest to update my electronics skills I'd like to get into the Micro Controller world, and the Pic line of products looks like a good stepping off point. I've done some assembly coding (in a past life on x386 chips), but would like to try using C as the main programing language (to help speed d...
by CrazyBillyBob
Thu Oct 23, 2008 7:38 am
Forum: General Discussion
Topic: DC to DC Voltage stepup
Replies: 9
Views: 1970

If this is truly for a laptop, why not just use a 100 watt inverter and run the standard charger/ps through there. Just remember to place a cutoff switch in line with the 12v so as not to run down your battery. The Black and Decker 100w inverter I have runs both my and my son's laptop without a hic...
by CrazyBillyBob
Thu Oct 16, 2008 7:44 am
Forum: General Discussion
Topic: DC to DC Voltage stepup
Replies: 9
Views: 1970

DC to DC Voltage stepup

I'm trying to see if it's feasible to find (worst case make) a 12Vdc to 20Vdc converter that will handle 2.5Amps constant. The 20V out needs to be pretty clean too as it's feeding a computer (laptop). The 12V source will be an automotive environment so noise and voltage spikes abound! Is this a craz...
by CrazyBillyBob
Wed Aug 27, 2008 6:19 am
Forum: General Discussion
Topic: [OT] Retail rounding cents up or down ???
Replies: 14
Views: 3010

jollyrgr wrote: A new twist that I do like is they are requiring you to punch in your ZIP code for the credit card when paying at the pump. Nice feature.
Unless you've recently moved to a new Zip and you can't remember which one the bill goes too :)
by CrazyBillyBob
Tue Aug 05, 2008 6:04 pm
Forum: General Discussion
Topic: Advice for switching to SMT?
Replies: 4
Views: 1202

Advice for switching to SMT?

Well after years of working with through board components I'm looking to start using SMT devices. I've got allot of basic questions, but any additional advice is welcome. Basic questions: What type of additional equipment is needed to work with SMT's? When designing PCB's what are some general rules...