Hello all, This will be a bit lengthy, but I feel I should be complete... So here you are :-) My name is Rick and I've been fascinated by the sciences since I...
Rick, One quick though occurs to me. I’m assuming that the five gallon paint can is made of steel. This would be a bit of a magnetic shield that not very...
Hello Charles, Thanks for the quick reply. Nope, my paint bucket is one of the typical plastic ones. I was afraid that if I used a metal container, I'd suffer...
Hi Nightrunner & all, I was very interested to read about the drift you're getting. I am using an ic, HMC1022 to detect magnetic field, far easier than going...
<snip> ... </snip> Rick, Congratulations on beginning your travels down a difficult but satisfying road. :) Having also built a TBM...
Joseph DiVerdi
diverdi@...
May 17, 2004 1:44 am
295
Hi Mark, I wish I knew what to tell you... My design is using of course the typical photocells, light, and blocking tab method, so after so much drift the...
Hi Joseph, Seldom have I minded aggrivations in a project so little... Despite the plague of the drifting voltage, I am just really enjoying this most...
might try replacing the aluminum with brass; al has eddy currents. ... From: nightrunner417 [mailto:nightrunner417@...] Sent: Sunday, May 16, 2004 9:32...
<various snips> ... OK. ... Don't be too sure about that. If you have the will you will find a way. There are many resources out there to help when one is...
Joseph DiVerdi
diverdi@...
May 17, 2004 5:45 am
300
Hi again everyone, Thought I'd drop in and make an update of my torsion balance mag's results. The last three or four days have been really impressive. Two ...
Hi all, Just to let you know that in next issues EPE Magazine (July issue) there's going to be a design of a magnetometer using the FGM sensors. Should be...
... Hello Mark Thank you for the heads up. My online issue had expired with the May issue and I had not renewed yet. I am using a FGM-3 with the SCL006b option...
Hi all, Here is a circuit I did some experimenting with a while back. I just found it looking through some old files. What I remember of it is that it worked...
... Hi John! I've disabled attachments for the group to avoid virus/worm posts. Please either upload the file to the files section of the group or email it...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the magnetometer group. File :...
magnetometer@yahoogro...
Jun 12, 2004 8:09 pm
307
Hi! I´m new to this group so I think I should start by introducing myself. I´m Guillermo Stuarts, from Argentina, and I´m studying Electronics Ingeneering. ...
... Guillermo, Welcome to the group! This is an interesting project and rather than offering thoughts on your choice of magnetometer I have a question about...
Joseph DiVerdi
diverdi@...
Jun 13, 2004 9:56 pm
309
First of all thanks for answering so soon! We do intend to measure the change of the terrestrial magnetic field and we are aware of its changes and the ...
... Guillermo, You're welcome. I, for one, would welcome learning about your actual measurements. If appropriate, feel free to mail me off list otherwise let's...
Joseph DiVerdi
diverdi@...
Jun 14, 2004 3:50 am
311
I finally purchased an FGM3 and associated circuitry for my local data recording station. As of now the device is just sitting on a desk in the office but it...
Not a clue. I can only surmise that the sudden movement causes the FGM3 to give a reading that overloads the digital portion of the converter, causing it to...
... Hello John I have the same issue with the same installation. I move it slowly about 1 degree and it locks up. Richard __________________________________ Do...
I would suggest that if sudden motion is causing lockups in the signal processor, that you have a bad connection somewhere. Easy to find. Take an insulated...
It is clearly the sensor. The circuit board is fastened down on a heavy board with standoffs and screws. The sensor is at the end of a 4 leg cable of ...
... I thought an intermittent connection might be the cause for mine and I touched up all connections. My circuit board setup is the same. The sensor has a...
Sounds like bad connections are not our problem. I wonder what the acutal mechanism of this problem is? jn ... __________________________________ Do you...
John, I believe what's happening here is that as the sensor is moved, the field strength it's 'looking' at is changed by an amount that exceeds the dynamic...
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