Recent content by syamilrosham

My laser works fine and seems perfect when it is connected to the USB hub. There are no other USB device used except for my laser. The problem is that the computer keeps saying I'm drawing too much current and it might harm the port. I wish I can measure which part of my circuit is actually...

Hi, I'm currently doing a project to power my 5mW green laser pointer using USB. I know that USB supplies 5V and maximum current of 500mA. My laser requires 2 AAA batteries to be powered so it gives a total of 3V. So, I decided to make a simple voltage regulator using LM317 circuit to step down...