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Jul 21, 2014
Samotage_300_medium samotage 592 posts

Topic: Brultech / using btmon, i'm always offline?

Hey Sean,

What Eric said is exactly the case.  Best update frequency as tested and proven is about 45 seconds.  This allows the raw data to show useful info - anything less adds noise, and systematic rounding errors.

The best way is to send up your data as it comes, instead of batching it up.  

Sam, @samotage.

 

 
Jul 19, 2014
Fb_profile_wires_medium sandeen 37 posts

Topic: Brultech / using btmon, i'm always offline?

How often are you sending the data to SEG?

In another thread where a user was sending data every 1s, Sam said:

Your core issue here is the frequency of updates. Sending data for every channel at 1 second intervals, while supported (and soon this will be subject to throttling) is causing every update to be classified as a "catchup" this means that your device is not being considered online. This allows for catchup posts to complete before aggregations and calculations are run and not corrupt the aggregated data. Reduce your data rates to a more realistic and resonable interval of 45 seconds or more and all will work as designed :D

-Eric

 
Jul 18, 2014
Icon_missing_medium bdapriv01 2 posts

Topic: Brultech / using btmon, i'm always offline?

Hi,

So I'm using BTmon to poll my GEM, and then upload to SEG.

Data is showing up, its accurate.

However, all my devices are always showing offline?

Is there a reason why? What logic does SEG use to determine online/offline?


Thanks

Sean

 

 
Jul 12, 2014
Fb_profile_wires_medium sandeen 37 posts

Topic: The Open Grid / Moved solar to new stream/device; can I combine with old data?

Thanks for the help, Sam - though I'm not sure things moved as I expected.

But you pointed out that I can download 1 stream & upload to another...

One thing that might help users self-maintain all this is the ability to clear a time range of data from streams.  I don't think that exists today, does it?

I'd like to download my streams, clear out all old data from dates before the switch, and then re-upload.  That way if there are different timestamps, they won't interleave...

 I guess I could kindasorta do this by downloading everything, then clearing everything, splicing stuff together, and re-uploading...

Thanks,

-Eric

 
Jul 10, 2014
Fb_profile_wires_medium sandeen 37 posts

Topic: Comments and Suggestions / A widget I'd like to see: The breakdown for "right now"

Yep, I do have that one going.

 
Jul 10, 2014
Samotage_300_medium samotage 592 posts

Topic: Comments and Suggestions / A widget I'd like to see: The breakdown for "right now"

An nice idea, that is now on the blackboard :D

In the mean time, have you tried the Watts On gadget?  This shows this kind of thing, together with an indicator of what is on.

Sam, @samotage

 
Jul 9, 2014
Fb_profile_wires_medium sandeen 37 posts

Topic: Comments and Suggestions / A widget I'd like to see: The breakdown for "right now"

The breakdown is great to see how things have accumulated over a period of time.

I'd love to see one that is for power (W) not energy (kWh) to show what all circuits look like "right now."

Just a thought :)

Thanks,

-Eric

 
Jul 7, 2014
Samotage_300_medium samotage 592 posts

Topic: The Open Grid / Moved solar to new stream/device; can I combine with old data?

Hey Eric,

email me the stream id's copy from and to to sam at this domain and I will get the robots to move it across for you.

Thanks!

Sam, @samotage

 
Jul 6, 2014
Fb_profile_wires_medium sandeen 37 posts

Topic: The Open Grid / Moved solar to new stream/device; can I combine with old data?

I bet this is a dumb question, but here goes:

I used to have a solar energy stream on my "Envoy 4889" device (which was really just a script).

I recently switched over to using a channel on a Brultech ECM-1240 instead.  How can I combine the data from the old stream with the new one?  I tried making the names the same, but no luck.

I rearranged some other channels as well, and I'm wondering if I can "re-associate" i.e. the old "refrigerator" stream historical data with the new stream.

If not, no worries.

Thanks,

-Eric

 
Jun 16, 2014
Volt_plug_medium rnoble 6 posts

Topic: The Open Grid / Water consumption

I was already adding a whole-house water filtering system, so I put in a seperate meter that offered a pulsed output...

http://www.ekmmetering.com/ekm-metering-product...

 
Jun 14, 2014
Icon_missing_medium cjin 1 post

Topic: The Open Grid / Water consumption

What sensor do you use to interface with water meter?

 
Jun 4, 2014
Samotage_300_medium samotage 592 posts

Topic: The Open Grid / Determining my Hydro Costs

At the moment, there hasn't been any code written for this.

Sam, @samotage

 
Jun 3, 2014
Volt_plug_medium rnoble 6 posts

Topic: Brultech / Cumulative pulse data

Figured it out. Below is what I'm doing for future reference...

I'm using a GEM/DashBox with a water meter and have been able to display Gallons/half hour (All Stacked Up Gadget)Gallons/day (Daily Summaries From The Last Month Gadget)Gallons/month (Over The Year Gadget) & Overall Consumption (My Energy, Stacked Up Gadget). The Dasbox reports incremental usage (gallons), just like energy is reported (kWh).

 
Jun 3, 2014
Volt_plug_medium rnoble 6 posts

Topic: The Open Grid / Water consumption

I'm using a GEM/DashBox with a water meter and have been able to display Gallons/half hour (All Stacked Up Gadget), Gallons/day (Daily Summaries From The Last Month Gadget), Gallons/month (Over The Year Gadget) & Overall Consumption (My Energy, Stacked Up Gadget). The Dasbox reports incremental usage (gallons), just like energy is reported (kWh).

 
Jun 3, 2014
Volt_plug_medium rnoble 6 posts

Topic: The Open Grid / Determining my Hydro Costs

I'm also very interested in the TOU/Tiered pricing options.

 
Jun 3, 2014
Volt_plug_medium rnoble 6 posts

Topic: Brultech / Cumulative pulse data

I recently installed a water meter and have it connected to my GEM and my DB is sending data to SEG. I was hoping to get cumulative data so I know when I need to change my water filters, but DB just gets individual pulse counts between readings and forwards on the actual consumption between readings to SEG. Is there anyway to get cumulative data?

 
Jun 3, 2014
Samotage_300_medium samotage 592 posts

Topic: Renewable Energy / Anybody using Enphase?

Interesting... I see from the interwebs a shaded cell will increase the resistance of the shaded cell, causing the string to loose efficiency.

http://www.solarpower2day.net/solar-cells/efficiency/

I suppose I've learnt something!

Sam, @samotage

always finding out new stuff.

 

 
Jun 2, 2014
Tony1_medium tnakelsk 137 posts

Topic: Renewable Energy / Anybody using Enphase?

As sandee pointed out inverter on panel is great with shading issues. In a typical DC array which can have multiple panels  per array, shadowing which can effect a couple of panels during the course of the day can drag the entire array down. Think of it as water in separate buckets interconnected, if one bucket loses some water the natural effect is for the other buckets to divert some of the water from the other buckets to attempt to level off the low bucket. As with water, electric basically does the same. The panel that is having shading issues will draw electric to it which brings down the efficiency of the total array. Another benefits of inverter on panel is the wiring bring AC of the roof requires less copper, the otheris the overall stress on the inverters. With large invertors you will eventually end up replacing them before the end of life of the panels. I installed sunpower panels with sunpowers inverter on panel which carries a 25 year warranty on both the panel and micro inverter. Yes this is a prorate warranty but a micro inverter runs a couple of hundred dollars each.   

 

Tony   

 
Jun 2, 2014
Samotage_300_medium samotage 592 posts

Topic: Renewable Energy / Anybody using Enphase?

Any modern web site has sunk cash - an oft overlooked fact of life ;)

Sam, @samotage

 
Jun 1, 2014
Fb_profile_wires_medium sandeen 37 posts

Topic: Renewable Energy / Anybody using Enphase?

SEG has sunk cash eh? ;)  Maybe you should go the donation route like pvoutput.org does?

Or combine forces, and take over the world from .au.  ;)

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