On a personal note, I'm excited because I ordered all the parts for my first build. In this case it's going to be a dual power 55mW/107mW (give or take) Green Laser.
As I said in the past, I've been slowly working up my way up the power curve from <5mW to 25mW to 80mW. I considered jumping to a dual power 200mW/1.6W Blue Laser, but after a lot of thinking, I felt that the lower powered version would be easier for my first build and the things I'd learn from building it would help with the higher powered build.
The 520nm Osram PL520 Diode In Copper Module W/Leads & 405-G-2 Lens is the module I'm using, see link below.
https://sites.google.com/site/dtrlpf/home/diodes/pl520-520nm-laser-diode
While this could be purchased with the driver, I decided to go with a LM317 Adjustable Regulator. This approach allows me to have a switch to select which current (power) setting I want. After studying the photos and the readings for the voltage, current and power, I selected 150mA and 300mA as the two settings.
A switch selects either a single 8.2Ω or two 8.2Ω resisters in parallel for 4.1Ω. The resistor(s) are placed between Vout and Adjust on the LM317.
As tempting as it is for me to address all the details now, I'll wait until it's working before I write up the full description...
Bob Diaz
As I said in the past, I've been slowly working up my way up the power curve from <5mW to 25mW to 80mW. I considered jumping to a dual power 200mW/1.6W Blue Laser, but after a lot of thinking, I felt that the lower powered version would be easier for my first build and the things I'd learn from building it would help with the higher powered build.
The 520nm Osram PL520 Diode In Copper Module W/Leads & 405-G-2 Lens is the module I'm using, see link below.
https://sites.google.com/site/dtrlpf/home/diodes/pl520-520nm-laser-diode
While this could be purchased with the driver, I decided to go with a LM317 Adjustable Regulator. This approach allows me to have a switch to select which current (power) setting I want. After studying the photos and the readings for the voltage, current and power, I selected 150mA and 300mA as the two settings.
A switch selects either a single 8.2Ω or two 8.2Ω resisters in parallel for 4.1Ω. The resistor(s) are placed between Vout and Adjust on the LM317.
As tempting as it is for me to address all the details now, I'll wait until it's working before I write up the full description...
Bob Diaz