Search found 125 matches

by Tommy volts
Wed Aug 31, 2005 4:48 pm
Forum: General Discussion
Topic: RF Signal strength to measure distance
Replies: 21
Views: 4940

Re: RF Signal strength to measure distance

John T,<p>That sounds like a fun RF project!<p>Your idea reminded me of another project not related to RF but which involves a distance alarm:<p>In the object, place a GPS unit which transmits the objects coordinates (lat.&long.) to fixed position reciever (these units are cheap and used by equipmen...
by Tommy volts
Fri Jul 22, 2005 3:45 pm
Forum: General Discussion
Topic: seeing infared
Replies: 19
Views: 5708

Re: seeing infared

HighFrequency,<p>You and Chris have reminded me of one of my favorite lines from The Matrix:<p>Morpheus to Neo:<p>“If real is what you can feel, smell, taste and see, then 'real' is simply electrical signals interpreted by your brain …your mind makes it real”
by Tommy volts
Fri Jul 01, 2005 11:57 am
Forum: General Discussion
Topic: Portable PA System
Replies: 12
Views: 1886

Re: Portable PA System

Enzo,<p>I appreciate your concern for the others.<p>Thanks for the suggestion about the bullhorn but that is not the sound I am looking for. I like the sound of a nice loud PA system.<p>However, I do like your idea about the car horn and battery.
by Tommy volts
Thu Jun 30, 2005 3:45 pm
Forum: General Discussion
Topic: Portable PA System
Replies: 12
Views: 1886

Re: Portable PA System

Mike: That amp is a little more than I need on this one but I may look you up on another project.<p>sofaspud: I am going to try to put it together from your parts list, I'll let you know how it goes.<p>Matt: I will use the amp you suggested.<p>thanks guys
by Tommy volts
Thu Jun 30, 2005 10:30 am
Forum: General Discussion
Topic: Portable PA System
Replies: 12
Views: 1886

Portable PA System

Fellow Forum Members,<p>I am interested in building a portable PA system, something really loud that I can use at my boy's little league games or other similar type events (I will try not to be too abnoxious with it).<p>Here is what I have in mind:<p>1. 12" speaker 2. microphone 3. amplifier (kit or...
by Tommy volts
Wed Jun 29, 2005 5:04 pm
Forum: General Discussion
Topic: down dirty inverter advice needed
Replies: 43
Views: 5871

Re: down dirty inverter advice needed

Dave,<p>That is a perfect explanation. Thank you.
by Tommy volts
Wed Jun 29, 2005 11:34 am
Forum: General Discussion
Topic: down dirty inverter advice needed
Replies: 43
Views: 5871

Re: down dirty inverter advice needed

Why is the device called an "invertor"? What is being inverted? Is there a better word for what the device is doing?
by Tommy volts
Mon Mar 21, 2005 10:25 am
Forum: General Discussion
Topic: pls help me how to check for faulty inverter
Replies: 16
Views: 3032

Re: pls help me how to check for faulty inverter

jwax,<p>What does the inverter do in Learner's power supply? Why is it necessary? I have been hearing the word "inverter" for alot of different applications lately. <p>Recently I overheard a guy say that he has an "invertor" on his car DVD player that allows him to plug in his laptop to it, I'm stil...
by Tommy volts
Fri Mar 04, 2005 1:32 pm
Forum: General Discussion
Topic: magnetic field sensor
Replies: 5
Views: 1064

Re: magnetic field sensor

Thanks Mr. Al and Philba, that is exactly what I need.
by Tommy volts
Fri Mar 04, 2005 12:07 pm
Forum: General Discussion
Topic: magnetic field sensor
Replies: 5
Views: 1064

Re: magnetic field sensor

Actually I found the name of what I need, but I can't find where I can get it> I need an A3515 Ratiometric Hall Sensor. <p>Does anyone know where I can order one?
by Tommy volts
Fri Mar 04, 2005 11:56 am
Forum: General Discussion
Topic: magnetic field sensor
Replies: 5
Views: 1064

Re: magnetic field sensor

I found the sensor I need.
by Tommy volts
Fri Mar 04, 2005 11:03 am
Forum: General Discussion
Topic: magnetic field sensor
Replies: 5
Views: 1064

magnetic field sensor

I need to measure the relative strengh of a bar magnet vs distance from the sensor. I think need a magnetic field sensor that can be used to measure the relative strength of a magnetic field. The Hall sensors from Radio Shack are switches, I don't want a switch. I need a sensor that is simple and th...
by Tommy volts
Thu Mar 03, 2005 8:36 am
Forum: General Discussion
Topic: BasicStamp2
Replies: 10
Views: 2837

Re: BasicStamp2

Philba:<p>thanks for the correction, I shot from the hip with my reply
by Tommy volts
Thu Mar 03, 2005 7:49 am
Forum: General Discussion
Topic: BasicStamp2
Replies: 10
Views: 2837

Re: BasicStamp2

3Phase:<p>AVR is the name of a company that produces microcontroller systems.
by Tommy volts
Wed Mar 02, 2005 8:42 am
Forum: General Discussion
Topic: BasicStamp2
Replies: 10
Views: 2837

Re: BasicStamp2

isomk:<p>be carefull when you buy stamp kits, many of the kits out there are very incomplete and very expensive, often they dont even have the stamp itself but only the project board with a bagfull of components for earth experiments or some other specifc use. I believe a complete kit (BS2 and board...