Re: [Vo]:Home made data logging ammeter

2012-10-29 Thread Michele Comitini
Some things can be handled with scilab + xcos http://www.scilab.org/products/xcos http://spoken-tutorial.org/wiki/index.php/DAQ If you do not need RT signal analysis, consider spitting data acquisition and data analysis. Most loggers today have large memory or at least async data communication

RE: [Vo]:Home made data logging ammeter

2012-10-28 Thread Arnaud Kodeck
repetitive small spikes, but rather more to protect your phidgets. Arnaud _ From: Jeff Berkowitz [mailto:pdx...@gmail.com] Sent: dimanche 28 octobre 2012 02:42 To: vortex-l@eskimo.com Subject: [Vo]:Home made data logging ammeter Hi all, I built this USB-connected ammeter so we

Re: [Vo]:Home made data logging ammeter

2012-10-28 Thread Jeff Berkowitz
-l@eskimo.com *Subject:* [Vo]:Home made data logging ammeter ** ** Hi all, I built this USB-connected ammeter so we could log current flow accurately and rapidly while doing electrolysis and also electroplating.** ** ** ** http://pdxlenr.blogspot.com/2012/10/a-pretty-good-data-logging

RE: [Vo]:Home made data logging ammeter

2012-10-28 Thread Arnaud Kodeck
: Re: [Vo]:Home made data logging ammeter Thanks Arnaud. The goal of the diodes is to protect the board - it cost more than the resistors did. But yeah, I know. Your point is especially true because those 1N5400s are odd - they list a forward voltage around 1.2v, rather than 0.6v as you

Re: [Vo]:Home made data logging ammeter

2012-10-28 Thread Jeff Berkowitz
. ** ** Arnaud -- *From:* Jeff Berkowitz [mailto:pdx...@gmail.com] *Sent:* dimanche 28 octobre 2012 16:24 *To:* vortex-l@eskimo.com *Subject:* Re: [Vo]:Home made data logging ammeter ** ** Thanks Arnaud. ** ** The goal of the diodes is to protect

Re: [Vo]:Home made data logging ammeter

2012-10-28 Thread Eric Walker
On Sat, Oct 27, 2012 at 5:41 PM, Jeff Berkowitz pdx...@gmail.com wrote: Hi all, I built this USB-connected ammeter so we could log current flow accurately and rapidly while doing electrolysis and also electroplating. http://pdxlenr.blogspot.com/2012/10/a-pretty-good-data-logging-ammeter.html

Re: [Vo]:Home made data logging ammeter

2012-10-28 Thread Alan Fletcher
I can't resist noting that googling armature of an amateur ammeter gives 750,000 hits

RE: [Vo]:Home made data logging ammeter

2012-10-28 Thread Arnaud Kodeck
Subject: Re: [Vo]:Home made data logging ammeter On Sat, Oct 27, 2012 at 5:41 PM, Jeff Berkowitz pdx...@gmail.com wrote: Hi all, I built this USB-connected ammeter so we could log current flow accurately and rapidly while doing electrolysis and also electroplating. http

Re: [Vo]:Home made data logging ammeter

2012-10-28 Thread Jeff Berkowitz
I have wondered the same thing. I guess the Phidgets folks are somewhat in this space - if you look at the prices of the modules here, for example: http://www.phidgets.com/products.php?category=8 and scroll down to the green blocks, that's going to add up if you try to configure a system with a

Re: [Vo]:Home made data logging ammeter

2012-10-28 Thread Terry Blanton
For all your electronic needs, consider: http://beta.globalspec.com/electronics/

[Vo]:Home made data logging ammeter

2012-10-27 Thread Jeff Berkowitz
Hi all, I built this USB-connected ammeter so we could log current flow accurately and rapidly while doing electrolysis and also electroplating. http://pdxlenr.blogspot.com/2012/10/a-pretty-good-data-logging-ammeter.html Jeff

Re: [Vo]:Home made data logging ammeter

2012-10-27 Thread Jack Cole
Hi Jeff, Good work! You could also consider this ( https://www.sparkfun.com/products/9028) for use with your A/D converter. I'm using something like this with an IOIO board connected to an Android device. This will give you both current and voltage. Take care, Jack On Sat, Oct 27, 2012 at