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Batteroo testing
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EEVblog:

--- Quote from: FrankBuss on December 20, 2016, 10:57:52 am ---but I found another toy, with one AAA battery (Battery Powered Engine):

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I've got a single AA powered Percy, will use that with a converter and oval track.
EEVblog:

--- Quote from: FrankBuss on December 18, 2016, 09:02:33 pm ---To check exactly when the MP3 player I'm using for the first test stops playing, I created a simple peak detector with very slow fallback:

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To check when a product stops I'm simply time lapse recording every product next to a stopwatch. When the product stops, low batt comes on etc I have my time (and video proof).
razvanme:

--- Quote from: EEVblog on December 20, 2016, 11:00:49 am ---Yes three AAA's only.
I'll pick up some AAA to AA converters tomorrow from Jaycar

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4 AAA's I tried to do some tests myself, I gave up due to Picoscope software that does not allow logging of data  |O. So 4 AAA's going your way.
madires:

--- Quote from: Luminax on December 20, 2016, 02:03:51 am ---Do you by any chance happen to prepare ordinary (bulb) flashlight as well?

Might be a good benchmark testing a resistive type flashlight which is just that, a pair of wire across the battery(ies).

As for lux meter... wonder if it's reliable to get a photodiode and whack it on an arduino or something... hmmmmmmmm......

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I agree, a flashlight with a classic bulb would be great for testing. But we should define a threshold for the brightness in % at which we consider the flashlight being unusable, and use that threshold for all flashlights for a proper consistency.
razvanme:

--- Quote from: madires on December 20, 2016, 11:27:33 am ---
--- Quote from: Luminax on December 20, 2016, 02:03:51 am ---Do you by any chance happen to prepare ordinary (bulb) flashlight as well?

Might be a good benchmark testing a resistive type flashlight which is just that, a pair of wire across the battery(ies).

As for lux meter... wonder if it's reliable to get a photodiode and whack it on an arduino or something... hmmmmmmmm......

--- End quote ---

I agree, a flashlight with a classic bulb would be great for testing. But we should define a threshold for the brightness in % at which we consider the flashlight being unusable, and use that threshold for all flashlights for a proper consistency.

The tests with the mp3 player is the best option for now.

--- End quote ---

I think the problem with defining a threshold is that it's subjective, it's possible I can see better than you in the dark. Also using Batteriser the light will be full brightness until it goes dark. How do you compare them? One will have a gradual dimming, one will have full brightness till the end. Maybe integrating the amount of light, I don't think that will work either.

The tests with the MP3 player are the best they can do right now in my opinion.
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