How do I turn on plotting on the battery voltage? I am running the code form the V7 Image. I have been able to do this before but for some reason the control to enable/disable plotting on this data point from my MotionOLED Mote is gone. Does anyone know how to do this? Please see the two screen shots attached. Regards.
The metrics.js file needs to be updated where the battery metric is being captured. If you look under special metrics I think this is the one you need to modify and include the graphing options like I added at the end of the below code.
//special metrics
V : { name:'V', regexp:/(?:V?BAT|VOLTS|V)\:(\d\.\d+)v?/i, value:'', unit:'v', graph:1, graphOptions: { legendLbl:'Level', lines: { lineWidth:1 }, colors:['#09c']}},
Thanks a lot. Is there a recommended way in which to best edit the file? Do I need to re-boot after the edit? Can I edit it while the file is being used? Is there a way to edit it without having to re-boot? Thanks, again mzv72m.
Hacker007,
You can just edit it in place.
To reboot, you have 2 options (assuming you are running upstart as it comes standard with my recent images):
- just issue a sudo restart gateway (or stop then start)
- if you load V8 it has a new settings page with a power symbol button which you can use to stop the app, which then gets restarted by upstart (so essentially a restart)
You can basically log/graph any numeric metric. However in some cases it makes little sense. When a battery drains very very slowly (well most of my battery nodes are since they are supposed to last a looong time) you always see a very straight line in the graph, so no real value added to just looking at a fixed value.
And FWIW the nodes in the dashboard will show a low battery icon when the voltage is below 3.55v i believe. Maybe I should make that value customizable via a metric setting... ::)
Hope this helps...