Recent Posts

Topic: The Open Grid / Is there a way to combine streams?

Hey Waynew, 

Welcome to SEG!

create a new stream, and check its calculated flag ( in the edit stream page )

then go to tools, calculated streams and define the math for the calculation!

then your new stream will start the magic.

Sam, @samorage

Topic: The Open Grid / Brultech ECM-1240 energy readings from old ecmread.py

Try HTML normal, p b etc tags, that all th editor makes, and chrome works for me.

Sam, @samotage

Topic: The Open Grid / Brultech ECM-1240 energy readings from old ecmread.py

nevermind about the markup - the editor does not work properly in my web browsers (opera, chrome)

Topic: The Open Grid / Brultech ECM-1240 energy readings from old ecmread.py

i'm working on btmon.py - the beta is fairly stable, but there are still a few more
adjustments to RRD and DB schemas before it comes out of beta.  btmon is
considerably more robust than ecmread, and it has a polling mode that
significantly improves performance on serial lines with multiplexed ECM
devices (or GEM for that matter).

ecmread 2.4.5 has the cumulative/delta fix for SEG.  as you noted, the
cumulative is so large you probably do not see the new deltas.

you can salvage your existing data by doing this:

1) download energy data from SEG
2) process the energy data so that each entry is a delta from the previous instead of cumulative
3) delete the energy data from SEG
4) upload the new energy data to SEG

btw, where are the instructions for how to do markup in the SEG forum?
everything i type runs together into a single paragraph...

m

Topic: The Open Grid / Is there a way to combine streams?

I have my Brultech ECM-1240s configured with 2 CTs on the main legs, feeding two channels.  Therefore, they need to be combined to a total house reading.  How can I do that to create a virtual channel or virtual device or ???

Another example is I have one CT & channel/stream on my HVAC compressor and another on my HVAC blower motor.  I would like to combine these to give a total HVAC usage picture.

Topic: The Open Grid / Brultech ECM-1240 energy readings from old ecmread.py

My energy data looks wonky.  I found this update at http://lancet.mit.edu/~mwall/projects/power/

What does this mean to those of us that have already uploaded data?  I suspect this may be why my energy readings are wonky.  Is there a way to fix this for my existing data?  I switched to 2.4.5-b2 yesterday, but I don't see much improvement today.  Is that because my devices already have a huge kwh?  Or am I using the wrong widgets?  Do I need to start over and lose my history?

Smart Energy Groups expects delta, not cumulative

Smart Energy Groups expects a delta reading for energy, not a cumulative reading. Release 2.4.5 includes this change. Note that you can fix this at the server side by processing the readings when they are posted to your account at SEG.

ecmread 2.4.5-b2

Topic: Comments and Suggestions / device types for brultech ECM-1220, ECM-1240, and GreenEye?

I have 3 Brultech ECM-1240s feeding into SEG.  When I created/discovered/whatever back in May, they were given a device type of "SEGmeter".  Is that the device type I should be using now?  Does changing the device type have any impact on existing feeds/data?  So, should/could I change it?  Or should I leave it as is?

Topic: Comments and Suggestions / People vs Things vs Groups

Can you explain more about the relationship between Dashboards and Groups?  At the moment, I have one Group and 5 Dashboards within it.  Should I create more Groups?  Or add more Dashboards to my sole Group? What are the pros & cons of each?

What controls what is seen publicly?  I don't see any Dashboads when looking at other users, like https://smartenergygroups.com/groups/brultech_o...

Topic: SEGmeter / case sensitivity in the SEG APIs

You just found something that doesnt work like it should...  ;)

The system now should support case insensitive matching for p_C21 to map to the p_c21 stream name that will be auto created by SEG.  Thanks for the report!

Sam, @samotage

Topic: SEGmeter / question about values in SEG API

Hey Powermeister,

All measurements are in their base units, I.e. Watts, and Watt hours for energy.  The kilo, mega prefixes are defined for the stream and displayed appropriately as needed.

energy, I.e. Wh values are the quantity since the last measurement.  SEG will add these up to give totals.

Temperature can be either C or F and the calibration variable can be used to convert.

the p_x etc prefixes are used to drive sensible defaults on discovery of things.  It's possible to call your streams anything and the system will work, but using the default conventions make things a little easier.

Sam, @samotage

Topic: SEGmeter / question about values in SEG API

name            type          units                   how it is interpreted
----            ----          -----                   ---------------------------
p_X             power         Watts (W)               instantaneous reading
e_X             energy        Kilowatt-hours (KWh)    number of KWh since last reading
temperature_X   temperature   degrees C               instantaneous reading

Topic: SEGmeter / case sensitivity in the SEG APIs

Topic: The Open Grid / Total power usage over certain periods

Hey infernix,

You need to send up the Wh data alongside the W power values.  It's too problematic trying to integrate the W into Wh consistently up in the cloud (we tried this a long time ago, and it didn't really work very well)

Sam, @samotage

Topic: The Open Grid / Widgets? Is anyone else having problems with them?

Topic: The Open Grid / Widgets? Is anyone else having problems with them?

Hey Teken,

i had a look, and it seems your main power was offline for a big chunk of time, this would explain the low consumption.  Data seems to be coming in now ok.

Sam, @samotage

Topic: The Open Grid / Widgets? Is anyone else having problems with them?

Topic: The Open Grid / Total power usage over certain periods

Hi there,

I've been collecting data for a while now: https://smartenergygroups.com/groups/stroomverbruik

What I can't figure out though, is how I can figure out how much kW I've used in total over a certain period of time. I'd like to figure that out so I can then say, ok, the dishwasher used X amout of kW this month at a price of Y so the cost of using it is Z.

Does anyone know how to achieve this?

Thanks! :)

Topic: SEGmeter / 64-Bit Linux Breaks Compiling

Hey Rob,

I use mac for dev and 32 bit Linux for NC.  Have you tried the Arduino.cc forums?

The other thing I've done in the past is to hack the file with the error, and correct the syntax so it will compile,

Sam, @samotage

Topic: SEGmeter / 64-Bit Linux Breaks Compiling

Having given up on the Arduino 1.0 because of compiling issues and changed library versions, I installed Version 0022 in a new 64-Bit installation. Immediately got compiling errors as follows:-

In file included from /usr/lib/gcc/avr/4.5.3/../../../avr/include/util/delay.h:44:0,
                 from /usr/lib/gcc/avr/4.5.3/../../../avr/include/avr/delay.h:37,
                 from /home/user/arduino-0022/hardware/arduino/cores/arduino/wiring_private.h:30,
                 from /home/user/arduino-0022/hardware/arduino/cores/arduino/WInterrupts.c:34:
/usr/lib/gcc/avr/4.5.3/../../../avr/include/math.h:426:15: error: expected identifier or ‘(’ before ‘double’
/usr/lib/gcc/avr/4.5.3/../../../avr/include/math.h:426:15: error: expected ‘)’ before ‘>=’ token

Anyone else encountered this?

Topic: Smart Energy - In the home / Halogen 2 LED

And now ...finally they are becoming available!

ive got a bunch for my home ready to roll, though I need new DC transformers.