Recent content by Viracocha

At those prices i'd be a fool not to get one as i've been looking for something high power. Are you able to get those in a visable red at a similar price/power rating or would that sort of thing ramp the price up considerably?

If you want to use light for this you might be better off using a difuse light source like a flourescent tube behind a bit of white perspex on one side of the rear of the wheel and a solar panel on the other side, then wrap the whole thing in a box so the only light is from the difuse source. A...

Wouldn't a laser only give you a small cross section of the spray and therefore change value depending on the direction of spray and car speed? Also laser light might act funny around the water droplets and as refraction through a large droplet or blocking by a stone could alter the results...

You could always get a glass lens for it like the one at www.laser-sur-plus-parts.com (other retailers exist but this link was at hand, remove the -) Or maybe use some optics from a sled as they seem to be coated glass, however i doubt they are normal collomating lens and they won't fit an aixiz.

Ooop, my bad. You would get a boost in either voltage OR current based on the arrangement and not both :-[ I'm glad someone here was paying attention ;)

(8 x 900) / 180 = 40 hours with each charge in an ideal situation. Although at 9v the regulator would get very warm.

Could be that you didn't discharge the capacitor before attaching the LD. Or maybe there was some current comming from your soldering iron which passed through the LD and grounded into you. Small enough that you didn't notice it but large enough to hurt the LD. One suggestion i read here a...

Ahh, theres an extra 1 in there! I thought that was a typo   :-[

In the LM117 reference paper i have it does show a 1A current regulator (page 17) but with only a 0.1uf cap on the input and no other caps on the output. My guess about the spike would be that it's one of the caps reaching full charge causing the output to spike just before the regulator reacts...

Re: How to use a multimeter for measuring a curren I feel sorry for laserbee's full stop key, thats the real victim in all this ;)

I found out the hard way that with Aixiz modules you need to remove the whole focusing section with the lens before trying to fit the diode, if you have the lens still attached and screwed up tight then the diode presses against the black plastic bit inside it and that stops it from going in...

My LM317T chips aren't gicing a constant 3v dropout, i've found at 4v i get about 2.2v out (min voltage for red and just right for 808 IR according tot he spec sheets for the diodes sold by senkat), at 5v it's 2.8v out and at 6v i get around 3.4v out. This is measured with a 3 diode load which...

I've found for a red laser powered by around 4-5v, the ideal resistance range is about 5 to 20 ohms, with the larger ohm value producing the minimum mA power and the smaller value setting the maximum mA power. So a good combination would be a 10 ohm multiturn with a 5-10 ohm resistor in series...

DigiKey is good only if you live in the US, if your in the UK then expect alot of pain and extra expenses. I've not tried mouser but the postage is the same as digikey for the UK so you might have similar problems. Rapid Electronics is the best UK site i've found.

It might be possible to merge multiple laser diode outputs into a single beam but i would think you'll need to collomate each one to a beam, merge them using some fancy optics (see the thread on white lasers for an example) then another lens to focus the output to a point. This is just guess...