Search found 464 matches

by Newz2000
Mon Jul 17, 2006 10:47 am
Forum: General Discussion
Topic: Goodbye RFID
Replies: 15
Views: 4853

Goodbye RFID

http://www.cio.com/blog_view.html?CID=23026 Found that on slashdot (which seems to be down) here. Basically it is a memory chip from HP holding from between 256Kb and 4Mb of memory and is accessible wirelessly at up to 10Mb/s. It needs no power source, but uses inductive coupling to get the power. O...
by Newz2000
Wed Jun 21, 2006 9:00 pm
Forum: General Discussion
Topic: hybrid math
Replies: 19
Views: 8842

Re " Your math is spot on" I don't think so - Ax far as I can remember the cost of a Prius is something like $10,000 more than an equivalent car. The present value (PV) of $486 per year for 10 years at 5% is something like $3,865 i.e. PV of 10 year annual savings total of $486 - The net cost (Not s...
by Newz2000
Wed Jun 21, 2006 11:49 am
Forum: Computer Programming
Topic: PIC Bootloader
Replies: 4
Views: 5739

I used the tiny pic bootloader on a project. I didn't post many details, but when I built it I wrote this blog post . I used a 16F88 and a serial port though. Also, I've not had great luck using this with the C programming environment. I think it's because I really don't understand code relocation. ...
by Newz2000
Wed Jun 21, 2006 8:11 am
Forum: General Discussion
Topic: -JPKNHTP
Replies: 2
Views: 1121

This page has a few examples, maybe it can provide some insight?
http://www.makezine.com/blog/archive/ipod/
by Newz2000
Tue Jun 20, 2006 11:53 am
Forum: General Discussion
Topic: hybrid math
Replies: 19
Views: 8842

hybrid math

Just doing a little math... Lets say I wanted to replace my wife's car with a new car. She currently gets 22mpg. The new camery hybrid gets 37mpg. She spends about $100 /month on gas. So how much money would she save on gas by switching to a hybrid? I've attempted the math a few different ways and d...
by Newz2000
Fri Jun 16, 2006 11:04 am
Forum: Computer Programming
Topic: Voice Encryption
Replies: 15
Views: 8495

When you're talking about encryption, you have to first access what the immediate and long-term value of the payload is. There isn't an encryption that will never be broken... therefore you have to decide, Do you simply want to make it difficult for the average person to hear, Do you want it impossi...
by Newz2000
Fri Jun 09, 2006 6:26 am
Forum: General Discussion
Topic: Capacitor to replace battery
Replies: 0
Views: 850

Capacitor to replace battery

Here is an interesting article that discusses a technique of dramatically increasing the surface area of the metal plates in a capacitor, allowing a huge increase in the amount of storage capacity. The article has too much conjecture and theorizing in it, but I think you'll agree that the technique ...
by Newz2000
Wed Jun 07, 2006 8:29 pm
Forum: General Discussion
Topic: PIC Programmer for Linux Laptop
Replies: 7
Views: 2334

I just got hired by Canonical to be the new webmaster for the Ubuntu (and other canonical) websites. I start July 3rd. As a matter of fact, I've got to order a new laptop and I'm trying to decide on one now. ;-) I guess that means that Ubuntu is my favorite Linux distro too! (actually, it's been my ...
by Newz2000
Tue Jun 06, 2006 1:36 pm
Forum: General Discussion
Topic: current follower
Replies: 2
Views: 1025

current follower

I know this is 1st year EE stuff, but I'm not too familiar with analog and this is definately analog... I want an LED to turn on when current reaches a set amount, something like 750ma. I have a motor controller chip that puts out a voltage proportional to the current draw... I thought this would be...
by Newz2000
Mon Jun 05, 2006 8:52 am
Forum: General Discussion
Topic: USB DEVICE CONTROL in NUT&VOLTS by A.Enzmann
Replies: 33
Views: 12283

Well, I don't know what others are going to do, but I, for one, plan to hook a big red button to mine. When you push the red button, the computer screen in Larry's office (the office next to mine) will turn off. Larry will then curse very loud. I'll call it the "make Larry's face red button." I can'...
by Newz2000
Sun Jun 04, 2006 12:01 pm
Forum: General Discussion
Topic: PIC Programmer for Linux Laptop
Replies: 7
Views: 2334

PIC Programmer for Linux Laptop

While trying to get this USB circuit working I realized that my JDM programmer doesn't work on my laptop. I have a USB to serial adapter and I get nothing. Normally, I like the smaller pics so use my USB PICKit1 programmer which works awesome. I'm thinking I'll need a new programmer. When I make a n...
by Newz2000
Fri Jun 02, 2006 11:17 am
Forum: General Discussion
Topic: Debounce Swt. input to Micro
Replies: 14
Views: 3422

The technique I've heard of, but haven't had any luck with, supposedly works with an rc circuit. The R value slows down the charge of c so that the ontime is delayed long enough for the contacts to settle down. I'd like to see a working example of this. I tried this last fall and gave up, although m...
by Newz2000
Fri Jun 02, 2006 10:59 am
Forum: General Discussion
Topic: USB DEVICE CONTROL in NUT&VOLTS by A.Enzmann
Replies: 33
Views: 12283

Does the circuit power up when you plug it into the USB? Have you checked the usual culprits, i.e., did you pull MCLR high or disable it, did you disable watchdog, disable brown out? I know my programmer likes to ignore the config options in the hex and I have to be very careful to ensure I've chose...
by Newz2000
Thu Jun 01, 2006 8:25 pm
Forum: General Discussion
Topic: Network and Windows
Replies: 3
Views: 1395

Do you simply want to share files, or do you want to also share the Internet? If you simply want to share files (but not share the Internet) do some googling for "Windows 98 netbeui" and you'll get several good links. Netbeui is an old but very effecient protocol built into Windows and some versions...
by Newz2000
Thu Jun 01, 2006 1:11 pm
Forum: General Discussion
Topic: USB DEVICE CONTROL in NUT&VOLTS by A.Enzmann
Replies: 33
Views: 12283

Fascinating article... I'd definately describe it as "Quick and Dirty." I've downloaded the zip file and have to admit, it's not immediately clear to me which part goes where. I'll have to re-read the article and see if I can get the pieces to go together. But, I have all of the parts and tools to b...