Laser pointer idea

[roguexx]

Diode: Brand New 660nm 200mW Mitsubishi CW Red Laser Diode/DIY - eBay (item 250601073082 end time Jun-19-10 04:14:41 PDT)
Diode housing: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=260546618140&ssPageName=STRK:MEWNX:IT
Driver schematic: http://3.bp.blogspot.com/_4wHo2MPDwAc/R2YuBFTq09I/AAAAAAAAAAU/4FCiHm71rQE/s1600-h/Driver.jpg
1-Adjustable Voltage Regulator LM317T
1- 100 ohm Potentiometer
2- 10 ohm Resistors
1- 1N4001 Rectifier Diode
1- 47uf 35v Capacitor
1- Power Switch
Using 3v going into the driver setup

If anyone could give me any tips on something else I should do please tell me if it will work or not and other opinions... Thank you!

 

[photonaholic]

Sounds like you have it down. Best of luck on your build! Be sure to post some pics of this project.

 

[roguexx]

Sounds like you have it down. Best of luck on your build! Be sure to post some pics of this project.

Will this work with a 7.2v when the diode has a max of 3v

 

[Prototype]

You have to overcome the voltage drop of the LM317.

 

[roguexx]

You have to overcome the voltage drop of the LM317.

So with the diode at 3v max it would be a good idea to use 7v