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OK, so as stated, I've nearly finished my first build, its taken a bit of time but I absolutely love it! :drool: I've read that you can use a magnifying glass to focus the laser, so I have a couple of questions. First, what is the range of movement needed to focus, i.e. how much would I have...

Hi all, I've made a few posts before introducing myself, so apologies for that. My name's Sam, I'm 18, starting my studying of EE at University at the end of the month. I took an interest in lasers a couple of years ago I guess, but building my own always seemed a little out of reach, so the...

Hi all, I was wondering, if I find out that the diode I have bought is case negative, which ATM I believe it is, can I cut off the negative pin, or at least shorten it, in order to bnetter fit my host, and use the case pin as the negative pin? Is that what case negative means? Or does it mean...

I'm looking at the price and I'm guessing the answer is going to be a big fat no from you guys, but how do these look? Protection Goggles Laser Safety Glasses for Red lasers New UK | eBay At that price, are the specs probably a lie? I have some more expensive ones coming, but I didn't realise...

Hi all, first post. I've recently been researching for my own first build, and I came across the LM317 driver. My plan to power my laser is to use supercapacitors, purely as an excuse to play with them as well. The thing is, because I'm using a flashlight, I have limited space. For the LM317...