- This topic has 3 replies, 1 voice, and was last updated 7 years, 6 months ago by Anonymous.
- May 7, 2015 at 10:43 pm #3398Peter FahringerGuest
I’m interested in knowing if anyone has tried logging GPS position and any of the DVM readings? I am a geophysicist looking to use one of these to log GPS position and voltage potential between two electrodes in a simple X,Y.voltage text file.
I’ve got a couple android devices as well as an iPad but I’ve not yet seen someone do this. I just ordered one of these for testing.
Any help would be appreciated.
- May 8, 2015 at 10:09 pm #3412AnonymousGuest
While what you describe is possible, it’s not implemented in the app. Logging is only done to the SD card.
It’s not difficult to do what you want though. Use the mooshimeter logging as normal. Then find a GPS logging app, on Android I recommend “my tracks” by Google; there must be others on iOS. Log your position over time with this.
Then it’s a matter of combining the logs. Unless you are good at Python, I’d recommend doing it in Excel. Export both legs to CSV and load them into Excel. Use vlookup to find the GPS position corresponding to each voltage, or vice versa. If you are not happy with the results, you might need to search the net for “piecewise linear interpolation Excel” to find the formula for this.
One tricky thing might be the time synchronisation. The mooshimeter might not record actual time, it may just be seconds since it was started. Then you’ll have to enter an offset that corrects the time difference. It might help to put a signal into the data, like only connecting the meter to voltage at a specific exact time, so you get confirmation that your offset is correct.
This would be the sort of app that gets created by the user community, if the API were made available. James, would you consider adding a socket to your app, that allows other apps to query the meter?
- May 11, 2015 at 9:44 am #3438AnonymousGuest
My Mooshimeter should arrive Thursday, then it’s off to test it. I’m actually going to try bringing the meter’s data into another GPS logging application as an external sensor to “solve” the timing issue, but won’t know how this is done until I get my hands on it.
- July 17, 2015 at 8:42 am #4320AnonymousGuest
MC Miller has a Bluetooth voltmeter with GPS. $1,430 USD http://www.mcmiller.com/ProductDetails.aspx?item_no=12400&CatId=