Review: ARGLPM Ophir

Pman · Mar 12, 2013

Saw something that said a Duracell ultra is 550ma.

ARG · Mar 12, 2013

Okay, it draws about ~65mA with the Ophir being powered and back light at 30%

Draws ~55mA without the Ophir and back light at 30%.

With no back light the draw drops ~5mA
With full back light the draw increase ~5mA

So without powering the Ophir and 30% backlight with a Duracell Ultra it should last about 10 hours.

awillis2589 · Mar 12, 2013

Update to the OP with Datalogging video and Graph.

JollyKillBill · Mar 12, 2013

Thats Awesome, I can't wait for mine

Seoul_lasers · Mar 12, 2013

WOw, Just WOw!!

:drool:

Look at that beautiful graph!! :worthy:

This is simply astounding how quick the meter sampled the Ophir head!!
I can't wait to get mine. +1

Pman · Mar 12, 2013

If you get a chance, would like to see how it's all connected when hooked up to the laptop unless it's just a standard usb.
Any particular order/procedure for proper powering/hookup/software setup (as in something you should avoid doing maybe)?
Lovin the graphing!

Seoul_lasers · Mar 12, 2013

Pman said:
If you get a chance, would like to see how it's all connected when hooked up to the laptop unless it's just a standard usb.
Any particular order/procedure for proper powering/hookup/software setup (as in something you should avoid doing maybe)?
Lovin the graphing!

Cool! I'd love to see what ever you guys come up with!

My ARGLPM will be doing graphing on an mini ARM8 platform.
stay tuned. I think you guys will enjoy seeing a coffee cup sized PC running the ARGLPM at 1Ghz!! :san:

awillis2589 · Mar 12, 2013

well yeah its just a USB cable that plugs in the side of the ARGMETER and then into the Laptop. What i do is plug in the 9v power then the USB, boot the datalogging software, select connect, select meter then Simple, select measurement then new then OK. meter the laser for the amount you selected then export the graph or dataset.

I'll do a video here soon to show you just what i mean.

Pman · Mar 12, 2013

Sounds great! Does it start datalogging as soon as it gets a certain level of signal?
Just trying to make sure there's not some certain way you should be handling plug/unplug/power switching. Remembering how it came out that you really needed to switch both lines to the Ophir together. Don't know if there's any potential risks anywhere that we should be made aware of. I don't think there is.
Can you start the software before plugging in the USB?
Have more time on my hands today as I had to take my wife for another medical test this morning where she swallowed a pill camera. Have to go back by 3PM so they can make sure the pill is going to pass thru all the way or they have to operate to get it out. Looks like that is <2% chance though.
I did find a clear box I could potentially use depending upon options. Have had a Jawbone blutooth brand new in its case for over a year. Had it sitting on top of a high shelf so I never noticed it. It's about 7" x 3" x 2". It's thinner than the Radio Shack boxes so I would have to be really careful. We'll see. Not making any decisions until I get mine.

ARG · Mar 12, 2013

Pman said:
If you get a chance, would like to see how it's all connected when hooked up to the laptop unless it's just a standard usb.
Any particular order/procedure for proper powering/hookup/software setup (as in something you should avoid doing maybe)?
Lovin the graphing!

Nothing to avoid really, but for the Ophir version it's best to put the 9V in first so it doesn't auto zero without a signal. Then connect it with a standard USB cable to the computer

Pman said:
Sounds great! Does it start datalogging as soon as it gets a certain level of signal?
Just trying to make sure there's not some certain way you should be handling plug/unplug/power switching. Remembering how it came out that you really needed to switch both lines to the Ophir together. Don't know if there's any potential risks anywhere that we should be made aware of. I don't think there is.
Can you start the software before plugging in the USB?
Have more time on my hands today as I had to take my wife for another medical test this morning where she swallowed a pill camera. Have to go back by 3PM so they can make sure the pill is going to pass thru all the way or they have to operate to get it out. Looks like that is <2% chance though.
I did find a clear box I could potentially use depending upon options. Have had a Jawbone blutooth brand new in its case for over a year. Had it sitting on top of a high shelf so I never noticed it. It's about 7" x 3" x 2". It's thinner than the Radio Shack boxes so I would have to be really careful. We'll see. Not making any decisions until I get mine.

Trevor has implemented a threshold in Pergerine, so you can set it to log when it reaches a certain power.

Starting to software before plugging it into USB is fine, you just have to refresh the COM port list.
Hope your wife gets well soon.

Seoul_lasers said:
This is simply astounding how quick the meter sampled the Ophir head!!
I can't wait to get mine. +1

The ADC can be set to sample up to 60Hz, the rate at which the screen updates and the serial updates can be changed independently as well.

Trevor · Mar 12, 2013

ARGLaser said:
Trevor has implemented a threshold in Pergerine, so you can set it to log when it reaches a certain power.
Starting to software before plugging it into USB is fine, you just have to refresh the COM port list.

I think I've found a way to implement automatic refreshing, so that I can do away with the Refresh button altogether. It does, however, have a fairly high CPU cost. I'll tinker with the time interval at which it executes.

If worse comes to worst, we just keep the refresh button.

Trevor

awillis2589 · Mar 12, 2013

The software is great! I've got a couple suggestions I'd like to run past you. I pm them to you when I get a chance.

Seoul_lasers · Mar 12, 2013

Trevor said:
I think I've found a way to implement automatic refreshing, so that I can do away with the Refresh button altogether. It does, however, have a fairly high CPU cost. I'll tinker with the time interval at which it executes.

If worse comes to worst, we just keep the refresh button.

Trevor

I am wondering if there isn't a way of offloading much of the CPU cost to the GPU instead? I know that the graphing uses a huge chunk of the CPU resources already. No way of going OpenGL or OpenCL? :can:

Trevor · Mar 12, 2013

awillis2589 said:
The software is great! I've got a couple suggestions I'd like to run past you. I pm them to you when I get a chance.

Better yet, post them in the Peregrine thread. It will let others see the idea, and let everyone know of any bugs you found.

The more input everyone has (and sees), the better Peregrine will get.

Seoul_lasers said:
I am wondering if there isn't a way of offloading much of the CPU cost to the GPU instead? I know that the graphing uses a huge chunk of the CPU resources already. No way of going OpenGL or OpenCL? :can:

I believe Processing already uses OpenGL... not sure about offloading rendering to the GPU. I'll look into it.

Trevor

awillis2589 · Mar 13, 2013

UPDATE: i've gone ahead and updated the OP with a Peregrine screen capture as well as another graph.

sinner · Mar 13, 2013

:drool: that refresh time, 0.8s to 95%!!! Right on brother! Mines on the way, Thanks to ARG!!

Review: ARGLPM Ophir

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