Search found 326 matches

by kheston
Mon Nov 16, 2009 4:17 pm
Forum: General Discussion
Topic: Cellular (800Mhz) antennas/boosters?
Replies: 22
Views: 5781

Re: Cellular (800Mhz) antennas/boosters?

If I buy or build an antenna, will I still need an amplifier to drive it during transmission? Without an amp, only my receive gain will improve, correct?
by kheston
Sun Nov 15, 2009 9:33 am
Forum: General Discussion
Topic: Cellular (800Mhz) antennas/boosters?
Replies: 22
Views: 5781

Cellular (800Mhz) antennas/boosters?

My mountain place has very limited cellular signal. We can make calls if we're in a certain area, but then only when standing on one leg with one's fingers crossed. Even still, dropped calls are unavoidable. I need a way to make my 1/2 watt device(s) reach further. There are products out there by Wi...
by kheston
Mon Nov 02, 2009 4:59 pm
Forum: Computer Programming
Topic: Virus/Internet Protection Software
Replies: 38
Views: 4386

Re: Virus/Internet Protection Software

MrAl, I only skimmed the other posts so these may have been mentioned, but take a look at Clamwin and SpyBot. The combo works well for me and doesn't slow the machine down to the degree McAfee and Symantec do. If you do get infected (which happens sometimes no matter what precautions you've taken), ...
by kheston
Thu Oct 29, 2009 1:42 pm
Forum: Computer Programming
Topic: Hijacked Browser!
Replies: 6
Views: 1165

Re: Hijacked Browser!

Poke around on bleepingcomputer.com. The people there have been a big help with the last few PCs I've had to rid of nasties.
by kheston
Thu Oct 29, 2009 11:07 am
Forum: General Discussion
Topic: Funny story....
Replies: 3
Views: 548

Re: Funny story....

He had no idea somebody thought they were being clever by using Greek letters. He's right, actually, Omega does look like a set of headphones. He'll build rockets someday. My boys make similar mistakes in thinking logically. For instance, when they first learned to speak I would ask, "you're not hun...
by kheston
Sun Oct 25, 2009 9:57 pm
Forum: Computer Programming
Topic: Advice on Motherboard Manufacturers
Replies: 23
Views: 3096

Re: Advice on Motherboard Manufacturers

MrAl, Like I said in my post earlier, I've had terrible luck with ECS (Elitegroup) motherboards. I build custom PCs for people 5-10 times per year, mostly for friends and family looking for something custom and cheap. The local Fry's stores advertise them all the time paired with CPUs for a great pr...
by kheston
Thu Oct 22, 2009 1:24 pm
Forum: General Discussion
Topic: USB based logic analyzers
Replies: 10
Views: 2942

Re: USB based logic analyzers

I know nothing about these things, but I wonder what the major difference is between the units you're looking at the the Saleae:

http://www.sparkfun.com/commerce/produc ... ts_id=8938

This has been a staple on Sparkfun's website for a while. Junk?
by kheston
Thu Oct 15, 2009 6:07 am
Forum: Computer Programming
Topic: Advice on Motherboard Manufacturers
Replies: 23
Views: 3096

Re: Advice on Motherboard Manufacturers

The MB manufacturers are pretty good about listing the chipsets their boards use specifically. Armed with their names, a web search on linux and the name of the chipset will yield pretty good results. I've looked around for years for a single definitive list of drivers for Linux. The trouble is: the...
by kheston
Wed Oct 14, 2009 10:39 am
Forum: Computer Programming
Topic: Advice on Motherboard Manufacturers
Replies: 23
Views: 3096

Re: Advice on Motherboard Manufacturers

MrAl,

I've had good luck with Gigabyte, MSI, Tyan, Supermicro, and Intel. I've had terrible luck with ECS (two separate occasions). Pay special attention to the chipset if you are going to load Linux, drivers usually lag those written for Windows.

HTH
by kheston
Tue Oct 06, 2009 4:18 pm
Forum: Robotics
Topic: Buy steppers in the SF Bay Area?
Replies: 5
Views: 2212

Re: Buy steppers in the SF Bay Area?

Ceasar,

I'll check into these. Thanks for the links.
by kheston
Tue Oct 06, 2009 4:12 pm
Forum: General Discussion
Topic: Automobile Ignition
Replies: 5
Views: 647

Re: Automobile Ignition

Bob, When I was a kid, I figured out what the capacitor was for the hard way...by assuming it wasn't required and leaving it out. I believe it is there to preserve the contact points, that is, the size of the spark between the contact points when they open is greatly decreased with a condenser (capa...
by kheston
Thu Oct 01, 2009 4:25 pm
Forum: General Discussion
Topic: my DIY solar - soon to be grid tied.
Replies: 12
Views: 1320

Re: my DIY solar - soon to be grid tied.

Dac,

Any chance you can tell me your CA panel source? I'm going to make a solar purchase in the next few months...sooner if it's cheap enough.
by kheston
Thu Oct 01, 2009 7:00 am
Forum: General Discussion
Topic: my DIY solar - soon to be grid tied.
Replies: 12
Views: 1320

Re: my DIY solar - soon to be grid tied.

NC has a feed-in tariff? No kidding! Out here in the gimme state we're supposed to be the greenest of them all, but the power company lobbies have managed to disallow anything but net metering. Hats off to NC!

Congrats on winning your battle with the bureaucrats! Looking forward to pics.
by kheston
Thu Sep 24, 2009 2:10 pm
Forum: General Discussion
Topic: Etchant solution
Replies: 19
Views: 2593

Re: Etchant solution

I just finished a chemistry course at school, I asked my instructor the same question. I know it's been mentioned above already, but for emphasis:

"do what you ought'a, add acid to wata' (water)" with a Bostonian accent...
by kheston
Mon Sep 21, 2009 6:49 pm
Forum: General Discussion
Topic: battery monitoring with opto-isolators
Replies: 50
Views: 4514

Re: battery monitoring with opto-isolators

Ron, The PICAXE 08M is a 12F683, the 12F683 is what I'm using. I smoked three 08Ms playing with a desulfator MrAl was coaching me through building (no, he didn't coach me on how to fry chips). They're great chips, easy to program, but they smell funny when you pass 48v through them. I decided after ...