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50mw Green laser Flash Light style no IR






There may be a problem with your crystals.

My 50mW greenie starts fine at temperatures of 10C.

Does the beam mode-hop at all?
 
what do you mean hop. the laser did this yesterday and worke alright untill tonight could it be the battery?
 
Well, for starters, try a new battery.

You can't tell if it's mode-hopping or not if there's no beam.
 
but im just wondering why sometimes it work and the other time it doesnt work at all and just shows ir last night it did it. left it for 2 mins worked. now its taking ages. but if i put it in my jacket where it is warm it works perfect for like 4 seconds.
 
test its current draw.
multimeter probes on the case and one on battery set to the mA button.
 
did you get it from bobhaha? its the same laser the second piece if the crown will take some force to get it off trhe first time.

i only took it off the first time to get the module out.
cheers
 
Well sounds like an empty battery, you know batteries are known to regain some surface charge when left in warm place, and then when you draw current it will give some current but then die again,

Try charging the battery, also, when you click to turn on the laser, when it's on, try touching the button (but not clicking it again) to see if it will change the light output.

Perhaps some old switch is installed, old contacts can cause problems like those.
 
yeah i think it might be the battery. is it normel for a low battery to shoot out a strong ammount of IR still? but i was using my laser flat out when i got it. with a cheap cr123a battery. Mesured at 3.23v.
 
AUSBEN said:
yeah i think it might be the battery. is it normel for a low battery to shoot out a strong ammount of IR still? but i was using my laser flat out when i got it. with a cheap cr123a battery. Mesured at 3.23v.
Click to expand...
IR is not strong, it's 3x stronger when battery is full but you do not see it because of green light,
3,23 V for lithium ion (rechargeable?) cell is pretty low, and that voltage goes down even more when battery is operated, hence very low voltage -

And there is your problem. You need to recharge the battery.
 
battery is not rechargable. i tryed calling battery world they dont even sell them.
 
yeh jaycar doesnt sell rechargables. I rang them up and brought non recharg one. dicksmith doesnt even sell cr123a. Buying them on ebay. ( Rechargable with a recharger ;)
 
Or buy them from lighthound.com
They sell some top notch batts at very reasonable prices and shipping is cheap and fast, if your in the USA you will have them in 3 days...
I buy all mine from them....
 
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