Mailing List flyrotary@lancaironline.net Message #65844
From: Finn Lassen finn.lassen@verizon.net <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] EM3 Datalog
Date: Fri, 12 Jun 2020 13:01:06 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
I'm using it. But using the vDrive3. Had to modify the EM3 software to get it to work. However, I may have a partly defective vDrive3. Sometimes it's not detected on startup, sometimes it is.

In addition to modifying it to use all eight 2 volt and all eight 5 volt channels I also modified the EM3 software to write a header (or label) row the first time a new file is opened. I also change the comma-delimiter to a Tab character (x09h). That means I can right-click on a file and chose "Open with" and open with Excel 97 and all columns are neatly there.

Graphs are easy to make in Excel 97.

Attached from one of the better engine runs.

I didn't continue working to make?? the EM3 software for the vDrive3 more reliable. Instead I ordered an Arduino data logging "shield". I intend to modify the EM3 software so that if no vDrive is detected, it simply outputs the data continuously. The Arduino program I have in mind will combine and store the data from the EM3, Dynon D-100 and GPS. Yes that's a lots of columns in a spreadsheet, but I can easily write an Excel macro to rearrange columns and generate graphs.

Finn

On 6/12/2020 4:28 AM, Stephen Izett stephen.izett@gmail.com wrote:
Hi Guys

Is anyone using Tracy???s EM3 Data logging feature?
I purchased the USB drive with the EM3 and wanted to get the data thinking it might be helpful if it logs
O2 data and Mixture Correction Table Address and current mixture correction Data.
Does anyone have Tracy???s Excel spreadsheet for the logger?

Cheers

Steve Izett



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