That is quite different from the average flashlight, a great custom build! 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 ) 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)?
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.
thanks for all the nice words. it was a pain to complete the Handschmeichler, cause all is very small. i will make some pictures from inside these days. all is wired with paint wire from an old transformer so it look really confused.
the body is made out of aluminium and stonewashed after grinding.
i have some new ideas to expand the software: shut off the display with a double click, cause this is really bright when use the red led at lowest level. and include a zero function to the spirit level to messure the absolute angle.
This forum has a lot of members whose skills I only can admire, but never could copy.
Without putting them down, by comparing apples with pears and/or oranges, this is a work of art of a different category.
Just to have the vision to create such a complex device. And then fabricating it and making it function properly.
Absolutely magnificent!
In terms of skills: I’m from the other (far) side of the spectrum.
i build i new one for me with some additional cool features. I added a Ti Tmp007. This is a really small contactless ir temperature sensor.
At the top cover is a xml2-wrgb led. you can fade through the rainbow via the pot and regulate brightness of the selected color. You can switch to white light (mixed from rgb) and regulate brighness. You can randam fade through colors automaticaly and also regualte the brighness. Each die of this led is connected to a 7135, so 380mA. The alu board is glued to a small alu pedestal inside the case. so thermal transfer is given. the white led die is used for the activity state of the 128gb usb memory without a 7135.
The top cover is made out of a sandwich with 0,3mm carbon and 1,0mm red zeder wood. both is glued together with superglue and a lot of pressure. the wood is also stabalized with superglue under vacuum. all in all this was a long try and error to get a durable cover made out of wood.