Sensebender Micro

tbowmo

Have you tried to hook up a serial connection to your sensebender? It writes the difference from the last transmitted measurement, everytime a new measurement is taken (every minute).

Fabien

@tbowmo 47x37 height : 27
I will make some improvment (can not test, my printer is in maintenance mode !) and post files for others.

mvader

@tbowmo said:

@mvader

Have you tried to hook up a serial connection to your sensebender? It writes the difference from the last transmitted measurement, everytime a new measurement is taken (every minute).

so if i want it to transmit less frequently (save battery?) i would increase the measure interval. correct?
I have some situations where i want frequent measuring (1 minute), and some where 15 minutes or 30 minutes would do fine.

tbowmo

@mvader

Yes, you could save battery, by changing to 10/15 minute check interval..

But still, the interesting thing is why it transmits every minute.. That's why I would suggest to check the serial output..

korttoma

There is an explanation to the problem further up in the thread:

@gloob said:

Hello

I found an error in the sensebender micro sketch in the latest release.

The calculation of the temperature change is wrong.
float diffTemp = abs(lastTemperature - (isMetric ? data.celsiusHundredths : data.fahrenheitHundredths) / 100);
needs to be replaced with
float diffTemp = abs(lastTemperature - (isMetric ? data.celsiusHundredths : data.fahrenheitHundredths) / 100.0);
The division with 100 needs to be 100.0 otherwise the result will be an integer instead of a float value and the difference will be the decimal places of the last temperature.

tbowmo

@korttoma

thanks for helping my memory :)

mvader

@korttoma i did see that. but your saying that is what is causing it to transmit every 1 minute?

korttoma

@mvader yes, it is rounding the temperature difference to the nearest degree so the difference is almost always more then the 0.5.

tbowmo

Just a hint, itead studio is starting a sale with 10% off on all imall items.. So maybe it's time to buy some Christmas presents for the inner geek :)

akbooer

Oh no! Lousy timing, I just bought some...
... in fact, they arrived today.

Speaking of which, whilst I got them to run the default sketch, do I actually need a programmer to do anything different, or can this be done OTA (from a Mac) ?

tbowmo

@akbooer

The default sketch doesn't support OTA, as it wasn't available in the stable branch at the time of launch

5546dug

@tbowmo Good sales but did not see the Sensebender too bad .

tbowmo

@akbooer

It's here http://www.itead.cc/mysensors-micro.html

epierre

@hek I've soldered a second unit to compare, same error, I flashed back the sensebender version from the examples and on both I am stuck here: "Sensebender Micro FW 1.2radio init fail"

Gateway is 1.5 BTW, one radio is from itead the other not.

epierre

@Sparkman said:

@epierre Can you confirm the settings you used in the IDE to program it?

1.6.5 version

Are you sure there are no solder bridges where you soldered the radio or socket for the radio?

same behavior on two units

Have you tried powering it with a couple of AA batteries after you uploaded the sketch?

not yet but why should that change anything ?

mvader

This post is deleted!

akbooer

Just tried out my first Sensebender...
soldered pins and battery power...
turn on...
led flashes once...
start inclusion...
3 devices...
Vera restarts (actually, it's openLuup running on an Arduino Yún)...
there they are...
and updating every minute!

Thanks so much to all who made this level of sophistication so easy!! (Z-wave was never this simple!)

Whilst I need a couple of temp/humidity sensors, I also need to reflash one as a 4-switch sensor. Can I do this with an Arduino Uno configured with the ArduinoISP sketch as described here ?
https://www.arduino.cc/en/Tutorial/ArduinoISP

Any advice or useful pointers? Thanks.

tbowmo

@epierre

What do you use as supply voltage for the thing? What is the output from testmode?

Did you add a capacitor on the radio module? How did you mount them together? (picture?)

tbowmo

@akbooer

Should be doable with an arduino as isp. Another option is to use the serial upload.

jovo

I am a noob in coding so I need some advice for tuning the sensebender.ino
current observed problems:

sensor values transmitted every minutes
battery level info seems wrong

I am running the default senseblender.ino.

on 1) What I understood in this forum, it should transmit the temp. values only every 30min (or direct when change is >.05). However, I see them arriving in my controller (Domoticz) every minute. What should I change to have it send every 30min?

on 2) I observe in Domoticz that the battery levels reported (in the Devices section) are inaccurate. For example: one sensebender with 3.2v measured power reports 80, where I would expect round 100 (this one has new batteries). Other sensebenders with still 2.63v report 53. How to calibrate the battery measurement?

I have been searching this forum, but was unable to find the answer.
Alternatively, a pointer to a wiki on sensebender.ino that has this explained would work as well.

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