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It is WPA2, I have Just checked. Actually, my router was set to an auto state, so it would choose between WPA/WPA2. Now I have put it to WPA2 so it is always selected, put it still does not work. Is it not possible, through coding, to see errors?

Hi

Sorry to bring concerns about CC3000 WiFi module up again I can see there have been written a bit about problems this module gives.

My (strange) problem is that the module will only work if connecting to my mobilephone that act as a hotspot and will not work with my wifi. Password is correct so no issue there - and distance (module only supports g protocol) is not a problem as I have tryed to connect to wifi and being close to wifi when testing. Is there any way to debug module by means of Espruino or other means?

Thanks

I forgot to show the number with. so it would make sense for you, should have been 2.93265214797 which is the voltage measured when batteries (3 AAAs) is connected to GND and 3.3V pins. From what you are writing I think there is not enough voltage.

The SD card has been formatted as FAT32 prior to use.

Thanks

I have started measurement with solarpanel and batteries attached so I can see how it behaves under various conditions.

I have made logging for RAM and for SD card. For RAM everything is logged fine however, using SD card gives me some troubles. If connected writing to SD card is no problem however if entering the deep sleep mode, writing will fail and "ERROR: Unable to read file : DISK_ERR" will be reported. Is more power required for SD card operations? Below is what is measured in deep sleep mode, e.g. 2,93265214797:

Sun Nov 2 2014 10:46:21 GMT+0000;2,93265214797
Sun Nov 2 2014 10:46:31 GMT+0000;2,93090339892
Sun Nov 2 2014 10:46:41 GMT+0000;2,92566964285
Sun Nov 2 2014 10:46:51 GMT+0000;2,92566964285

Thanks...

Ok so I will have to provide the current date & time at start up as a kind of calibration? With WiFi one can use a time provider I guess...

Thank you

Hi

How do you achieve the current date and time? I have tried new Date(); but like this:

Thu Jan 1 1970 02:43:17 GMT+0000

Thanks...

Ok thanks but this setup should only be applied during measurement right? Otherwise the batteries will get depleted I imagine... could you use the pinMode to stop current from floating? I mean the 2 resistors will remain permanently in the setup so I from time to time can measure the health of the batteries.

Thanks...

Do you have some sort of graphical representation of how to connect all the components? Or perhaps figure 1. on this page http://en.wikipedia.org/wiki/Voltage_divider is what you have in mind?

Thanks...

Sorry Gordon, so many questions...

If I add (charged) batteries between the solar panel and the Espruino I believe I will obtain the same result as with capacitor in that the initial draw is taken from batteries. I plan to use the pins as written in #9 (the voltage will be below 3.6 for sure).

But for an actual battery health check - to see if batteries are ok - how to achieve that? As I understand the NiMH batteries keeps voltage around 1.2 during lifetime and when discharged nothing - kind of on/off. So how to measure expected lifetime of batteries.

I do not see it is possible to read analog from pin 'Bat' as this pin is not shown when examining the possibilities by just writing analogRead() - then how to?

Thanks..

Great, thanks Gordon

Hi

I have connected the + from solar panel to Bat pin (lane connected to BAT pin in the power section referred on to this page http://www.espruino.com/EspruinoBoard) and - to GND but not seeing Espruino powered - what am I missing?

I just tried this, without a resistor across actually and yet able to measure voltage. I am surprised how high the voltage readings are - bringing my 7 Watt lamp close to the solar panel read out a value around 3.1 V and value decreases as I bring the lamp further away naturally. Just fun :)

Hi all

I am new to Espruino and is just starting something what will hopefully be a lot of fun.

So to start simple I have mounted Espruino on a breadboard and measuring voltage by connecting + on the battery to C0 and - to GND and then execute:

setInterval(function(){console.log(analogRead(C0)*E.getAnalogVRef());},250);

... on a AA battery (1,2 V) I measure a value around 1,3 (, used in DK, maybe for you 1.3).

However, when I remove the battery there are still some measurements, should there be?

Example output without battery:

0.67295681063
0.89780730897
2.78936170212
0.87308970099
2.98164893617
0.65816733067
0.86613545816
2.80983388704
0.84438538205
2.89468085106
0.71665560716
0.85554817275
2.88558139534
0.80850498338
1.68605577689
0.77740863787
0.82604651162
2.93058510638
0.81727574750
1.13138297872
0.77023255813
0.84757475083
2.96489361702
0.83800664451
1.00624584717
2.55388704318
0.83720930232
2.93581395348
0.75109634551
0.89780730897
2.81700996677

Example output with battery, which suggest actual reading:

1.38510638297
1.38430851063
1.38498338870
1.38590425531
1.38351063829
1.38430851063
1.38430851063
1.38351063829
1.38590425531
1.38430851063
1.38430851063
1.38259136212
1.38326693227
1.38430851063
1.38430851063
1.40026595744
1.38430851063
1.38259136212
1.38259136212
1.38590425531
1.38430851063
1.38430851063
1.38510638297
1.38510638297
1.38430851063

How come?

Thanks

Thanks Gordon, actually I just bought a volt meter since I guess it is a necessity :) The voltmeter has some built in resistors right and is what your are referring to am I right?

I will do what you suggest and experiment.

Thank you for replies - I am amazed by the speed you answer my questions :)

I have a small solar panel originally used to power 2x1,2 V / 1800 mAh batteries but never made it work so I took it apart to see if I can make it work with Espruino somehow. So actually I am just starting to learn all the terms to make my way around.

Thanks again

Thanks for your reply (very fast) Gordon

Is it possible to measure the output power / voltage from a solar panel with Espruino if connected to e.g. C0-C3 pins or other way?

Hi

How to find the available space on SD Card?

Thank you