by

|   Apr 14, 2006 at  7:45am

I recently bought this little thing for work on a project i was planning. To be honest, given its size and price, i was not sure what to expect. Thankfully, i can say that this little module is worth its price. It is a very bright, and fairly acurate little device, and incredibly simple- provide the power source, and you are good to go. Definatly consider this little one if you have any need for a VERY cheap laser!

by

|   Aug  3, 2006 at  6:51pm

Very neat little device. Simple power requirements and great performance. Thanks!

by

|   Sep 28, 2006 at 11:40pm

Very useful laser module, good range and low beam divergence. Has built in lens so only a power supply is needed, great for op. comm. projects!

by

|   Jun 12, 2009 at  2:53pm

This module is absolutely *tiny*, but it's great. I wasn't expecting much at all, but it'll give you a very nice, very bright red dot.

It's small enough that you can attach it to anything with ease. I use it to see what my robot's range finder is looking at. I've also used it as a laser sight for an rubber band shooter.

by

|   Jul 14, 2009 at  3:32pm

How far does this thing shoot (how dim does it get per meter), and does a variable input voltage translate into a variable intensity beam?

I'm interested in sending audio waves (analog voltages) via laser.

by

|   Nov 20, 2009 at  7:26pm

Iron Man!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

by

|   Jan 11, 2010 at  7:40pm

WARNING. The wires are not robustly soldered into the interior of the case. After a couple of weeks, my white wire has already come off. I'll need to open it up and solder it back on. Before using I recommend you wrap a little electrical tape where the wires leave the container so the wires don't move. Other than that, the device gives a strong, steady beam. Also, I think you need to resister down your voltage if you're coming 5 volt from an Arduino or you may shorten its life. Hopefully someone else here can give a more specific recommendation.

by

|   Jan 12, 2010 at 10:54am

Also, I think you need to resister down your voltage if you're coming 5 volt from an Arduino or you may shorten its life. Hopefully someone else here can give a more specific recommendation.

The product listing indicates the correct voltage of 3v, and the data sheet indicates a 40mA max current. So, yes, anything higher and you'll risk damage.

by

|   Feb 10, 2010 at  1:35pm

Could you use this as a range finder? I know that you'd need a receiver, but would this work as a transmitter?

by

|   Apr 24, 2010 at  4:04pm

Not bad, for the price. But the datasheet does'nt contain any useful information, apart from the current consumption, 35-40 mA, quite far from the 15 mA I measured at 3.1V. Also, like any LED, this device should be powered by constant current, not constant voltage, so there must be a resistor inside, but its value is unknown.