Search found 236 matches

by chessman
Sat Jul 12, 2003 11:40 pm
Forum: General Discussion
Topic: Which Micro Controller to Choose?
Replies: 9
Views: 3158

Re: Which Micro Controller to Choose?

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr> but you'll have to register as an engineer with an imaginary company. <hr></blockquote><p>I use "Research" as my company...not like anyone ever reads those forms anyway ;)
by chessman
Fri Jul 11, 2003 1:55 pm
Forum: General Discussion
Topic: Optocouplers @ Audio Freqs ?
Replies: 13
Views: 4168

Re: Optocouplers @ Audio Freqs ?

........isn't it crazy that I have an AD210 chip I can gratis you? I got a couple in a trade..and I always wondered what they were for... :D <p>of course, it's just the IC...
by chessman
Fri Jul 11, 2003 1:50 pm
Forum: General Discussion
Topic: WTB for friend: Cheap 12V 20A supply
Replies: 10
Views: 3551

WTB for friend: Cheap 12V 20A supply

Exactly what the title says...been trying to find one for him to buy, and he doesn't want to pay for the ratshack units.<p>Anyway, somebody have a spare one to sell?<p>lmk, thanks
by chessman
Fri Jul 11, 2003 1:45 pm
Forum: General Discussion
Topic: led that does not appear to need a current limiting resi
Replies: 4
Views: 1570

Re: led that does not appear to need a current limiting resi

BTW...I've seen 9V batteries die much faster than the LEDs do when coupled directly....<p>Anyway, there are tons of LEDs out there with built-in resistors. I used to know the name of one specific manufacturer that comes to mind...but I forget :(
by chessman
Fri Jul 11, 2003 1:40 pm
Forum: General Discussion
Topic: Which Micro Controller to Choose?
Replies: 9
Views: 3158

Re: Which Micro Controller to Choose?

I started with PICs from Microchip when I was an 8th grader...easy to learn the assembler environment (MicroASM), plus you can download the free IDE MPLAB from the microchip website.<p>*pssssst* *psssssst* order a couple 16F84 samples and a 16F877 sample ;) *pssssst*<p>Plus, PICs are so popular that...
by chessman
Fri Jul 11, 2003 1:33 pm
Forum: General Discussion
Topic: Optocouplers @ Audio Freqs ?
Replies: 13
Views: 4168

Re: Optocouplers @ Audio Freqs ?

Well...I'm no genius, but here are my ideas:<p>1) The thought of using a standard opto-isolator (or coupler) with an audio signal seems ideal. Flaw? The fact that an opto-isolator creates a digital 1 or 0. So, you can get your frequency correct, but not the amplitude of your audio signal.<p>Of cours...
by chessman
Fri Jun 27, 2003 4:18 pm
Forum: General Discussion
Topic: volume control
Replies: 4
Views: 1427

Re: volume control

Hmm....like I've said, I'm no genius, or even an EE....but i'll throw my idea out there.<p>555 timer gives clocks to a 4040 which has a logic chain to control the digital pot...that way each clock of the 555 would be progressivly louder.....you can use a couple op-amps to buffer an RCA input and RCA...
by chessman
Fri Jun 27, 2003 4:14 pm
Forum: General Discussion
Topic: Smiling So Hard my Face is gonna Break
Replies: 10
Views: 3096

Re: Smiling So Hard my Face is gonna Break

You guys suck. it hurts my ego :( <p>Congrats!!! I think it'd be the coolest feeling in the world to have my project, or my article in a magazine. I'm just too dumb though :(
by chessman
Fri Jun 27, 2003 4:08 pm
Forum: General Discussion
Topic: fireworks controller
Replies: 4
Views: 1342

Re: fireworks controller

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by wayne: a fella on Lopez Island in the Pacific NorthWest puts on one of the biggest fireworks shows up there.. I used to make a control cable for him every year.. I don't live in the Islands anymore...
by chessman
Thu Jun 26, 2003 8:14 am
Forum: Robotics
Topic: Robot Control
Replies: 15
Views: 7888

Re: Robot Control

if you're so worried, they make aircraft radios on CB frequency<p>Oh yah, I'm sure anything you build, or I build, will go over with the FCC real well :roll: <p>You could get the experimental radio license that I talked about....$50.<p>[ June 26, 2003: Message edited by: chessman ]</p>
by chessman
Thu Jun 26, 2003 8:05 am
Forum: General Discussion
Topic: fireworks controller
Replies: 4
Views: 1342

Re: fireworks controller

I've never seen E-matches. I wish I had some though!<p>For my fireworks display, I wrote a simple program on my PC in Basic (heh, I said simple ). Anyway, I had to press a button to ignite and then type a numerical pass-code.<p>It outputted over the parallel port to a little box, the box had manual ...
by chessman
Thu Jun 26, 2003 7:54 am
Forum: Computer Programming
Topic: PIC assembly
Replies: 5
Views: 3271

Re: PIC assembly

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>I would suggest downloading the data sheet for every part you are using plus the Midrange handbook. <hr></blockquote><p>If you go to Microchip.com, they'll send you a CD with all the current datasheets and handbooks.
by chessman
Mon Jun 16, 2003 1:18 pm
Forum: General Discussion
Topic: SIMM/DIMM memories
Replies: 3
Views: 1335

Re: SIMM/DIMM memories

There is a project a while ago that I found...for a PIC processor, uses a SIMM for a media player!! It's just an example project, but all the code is there. Unfortunately, I lost everything when my laptop crashed, so I can't give you a link :( <p>But now you know it exists on the internet, so just k...
by chessman
Mon Jun 16, 2003 1:13 pm
Forum: General Discussion
Topic: led display
Replies: 6
Views: 2212

Re: led display

You've probably already gotten rid of them, but if not, I'll take a couple :)
by chessman
Mon Jun 16, 2003 12:42 pm
Forum: General Discussion
Topic: SUGGESTION!!! LARRY READ THIS!!!!!!!
Replies: 9
Views: 2448

Re: SUGGESTION!!! LARRY READ THIS!!!!!!!

I think a programming...er...programing....er....proggramming....er......programmer........er....programer...er......"Code Writing" forum would be AWESOME!<p>It would be nice to filter out the "code" threads from the general threads