Recent content by hooshies

I connected the pot and brought the current down to 30mA (which was what I wanted). The issue for me is still the voltage, not the current. The laser module I have is rated for 4.5V. From the DDL schematics (Laser driver - It can be done) I thought that the driver would output 4.5V from a 9V...

Getting a reading of 38 mV. I'm not sure what this tells me about the driver itself. The reason behind setting up the driver was to have a regulated voltage output of 4.5V and 30mA. I've been able to get the current to 30mA using different ohms in the driver, but I was under the impression...

So as I said in my previous post, when I used the digital multimeter (DMM) on the (+) and (-) ends of the protoboard, the voltage for a 9V battery was around 8.5V. I then put together the dummy load as pictured below and tested the voltage at the indicated points. The voltage at those...

Hi guys, Thanks to all of you for your replies and the help you've provided. I decided to put together a driver for the for my laser diodes, but am running into a problem with the voltage. I've put together the DDL driver as described in the original thread, using the LM317T, a 47 uF...

I connected the laser to 3AAA batteries in a battery holder, and the laser turned on and stayed on for approximately 2 minutes before the batteries dying out. I then went back to the wall adapter, but connecting it directly would keep making the laser module very hot within a few seconds. My...

How would I go about connecting a resistor to the wall adapter?

Thanks for the help! I first tried using the 5V adapter that I have, and the laser would not turn on. When I stripped the charger wire, I found a wire wrapped around another (white) casing with a wire running inside. I read in a few places that the double-insulated wire (white) is negative...

Hi everyone, I am very much new to lasers, and am attempting to build a 3D laser scanner using a laser line module I purchased and the David Laser Scanner tutorial. My question is simple: how do I power the laser? The spec sheet states the Operating Voltage is 4.5V DC, and the Operating...

Hello all, Nice to be a new member in this forum, and I hope that I can contribute as much as I can. I have learned a great deal by just browsing the forums in the past. I must admit that my main reason for joining this forum is to actually get some help with a project, but it is good to be a...