handschmeichler 4.0

Looks fantastic, not cheap I’m sure, what sort of battery is in side and what capacity is it?

I’m guessing it’s lithium polymer. But I could be wrong hehe

Hi,

350mA lipo battery, charged via usb. parts only are arround 400euros…

markus

Wauw this looks fantastic!
Very impressive.

Damn! 400€… If only there’s DAC/AMP as well heehee

Hi, no more space inside available. also program memory 32kbyte is complete full, only a few byte available.

Size is 60x40x8mm

That is quite different from the average flashlight, a great custom build! :slight_smile: Out of curiosity a few questions:

-what are the drive currents for the leds?
-are those small lenses before each led? and if they are plastic, does that interfere with the output of the Nichia (365nm version?)
-I’d love a look at the inside!!
-(my pet-subject :wink: ) you state that the luxmeter is very accurate (accurate luxmeters are tricky to make), what sensor did you use, what is the Vlambda curve of the sensor and how does it deal with light that comes in from an angle (I see it has no diffusor)?

Looks awesome.

Hi,

- current for the white is 1050ma, red-700ma, uv-700ma.

- all glass lens

- i will make some pictures these days…

  • yes, you are right. it is important that you messure with the right angle

datasheet:
https://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwjK-dWmwanMAhULESwKHeIsCbsQFggdMAA&url=https%3A%2F%2Fwww.adafruit.com%2Fdatasheets%2FTCS34725.pdf&usg=AFQjCNFLjJDXoCZYHj9I_0HbrjsSoxHYXg

the sensor can also messure rgb values, so there are some things more possible. first i´d like to include a rgb led, but i discarded that cause the space is really limited.
i did some messurements compared with my lx133 luxmeter, and the results where pretty good for this smal device. i don´t say this is accurate by <1%, but good for make some messurements when outside.

markus

400 Euros!!! :smiling_imp: Catch it if you can! BTW nice little thing.

Oh my goodness.

Ein grosse envy ich have.

Zpekdacular.

Group buy 98% discount ?

I just watched the video. Man, that is small! You fit a lot of cool features in such a tiny package. Beautiful work!

Beautiful design, a work of art.

Cooles Teil!! :crown:

Wowser! You are one talented craftsman/designer/programmer/electronics guru/+. Congrats on that beautiful creation. :slight_smile:

unpackbar cool!

great build :slight_smile:

Very nice.

Wow, that is an amazing piece of tech. Specially the housing with carbon fiber.

Very nice!

I take it you will be in the next scratch-build contest?? :wink: