Sensebender Micro

[mvader]

@mvader said:
question about the default sketch for this board.
if i read correctly

// How many milli seconds between each measurement
#define MEASURE_INTERVAL 60000

// How many milli seconds should we wait for OTA?
#define OTA_WAIT_PERIOD 300

// FORCE_TRANSMIT_INTERVAL, this number of times of wakeup, the sensor is forced to report all values to the controller
#define FORCE_TRANSMIT_INTERVAL 30 

// When MEASURE_INTERVAL is 60000 and FORCE_TRANSMIT_INTERVAL is 30, we force a transmission every 30 minutes.
// Between the forced transmissions a tranmission will only occur if the measured value differs from the previous measurement

// HUMI_TRANSMIT_THRESHOLD tells how much the humidity should have changed since last time it was transmitted. Likewise with
// TEMP_TRANSMIT_THRESHOLD for temperature threshold.
#define HUMI_TRANSMIT_THRESHOLD 0.5
#define TEMP_TRANSMIT_THRESHOLD 0.5

if temps don't change more than .5 i shouldn't see a transmit but once every 30 minutes
i have 2 running right now
and both send temp and humidity every 1-2 minutes and the numbers are the same or in some cases only different by .1
i have it set to .5 so the question is

1. why does it transmit every minutes when the temp and humidity are the same
2. why is it transmitting even with as little as .1 change
   1 board is running 1.2 and the other is running the 1.3 sketch from git
   Battery however does transmit every 60 minutes as it's supposed to.,
   thx

[tbowmo]

@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).

[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.