by

|   Oct 24, 2008 at  3:38pm

Just a question for safety reason : what is the class of this laser ? We use it in beacons for robotics cup and there are several teams interested in lasers but have safety constraints. Thank you !

by

|   Dec 10, 2008 at  2:18am

So what exactly is the AUX2 pin for? It's just tied through a 10k resistor to ground. Is there any situation where I'd want to do something with that pin? I guess I could use it to detect whether or not the laser is connected.

by

|   Feb 19, 2009 at  8:07pm

TheCowGod: So what exactly is the AUX2 pin for? It's just tied through a 10k resistor to ground. Is there any situation where I'd want to do something with that pin? I guess I could use it to detect whether or not the laser is connected.

From the looks of the schematic you can tie Aux1 and Aux2 together to fire the laser if you are not using Aux1 alone for TTL...

by

|   Jul 18, 2009 at  8:25pm

It sucks being poor, because I can already see a project for this: Yet Another Wireless Com Interface

Two lasers on each side, and two receivers on each side. The reason for two? You toggle the state between the two so that one is ALWAYS ON and one always off during active/valid signals. You can tell when valid data is coming by connecting the two receiver outputs to each leg of an XOR gate for "ACTIVE," and pick one of the two for the actual data. Instant 2-wire serial (w/o handshake)! You can bit-bang easily if you shut BOTH lasers off between bits (wait for an "active" before reading the bit).

Fog, problem. Rain, problem (noisy I'm thinking). Trees, problem (especially with wind). Passer's-by, problem. BUT, under the right conditions you could tell there was something wrong if you're expecting data and the active line goes quiet.

I dunno, just thinking out loud...

What's the maximum length on these things, anyways? Anyone played with them long-range?

by

|   Jul 18, 2009 at  8:26pm

I meant to say "maximum range", not length.

by

|   Nov 25, 2009 at 11:15am

How does the sending layser knows when the other laysers isen't recieving?

by

|   Jul 28, 2009 at  3:47pm

What is the response, i.e. what is the frequency/duty cycle you can input to the TTL to have the laser turn on and off in sync.

by

|   Feb  9, 2010 at  9:41am

Does anyone completly understand the interface to this laser. I just picked one up and the schematic is unclear as to necassary pinouts. It seems to me that you need +5V to +12V at Vcc and ground, then it is quite ambiguous as to what else is required? Is Aux 1 really the signal pin and if so what type of TTL signal should I provide? Is it just +5V at Aux 1 continuously when I want the laser on? What is the point of Aux 2? Please help me!!!

by

|   Apr 26, 2010 at 11:17am

I feel your pain Byron. To test fire this thing:

red wire (pin 4?, who knows) +5
black wire (pin 3) GND
green wire (pin 2) a complete mystery, not needed
white wire (pin 1) GND works (some low voltage) - apparently you can modulate this thing - haven't tried.

Fortunately it seems to tolerate abuse - at least at 5v.

by

|   Jun 30, 2010 at  1:20pm

What's the maximum reliable frequency it can be modulated at?

by

|   Jul 15, 2010 at  8:23pm

Which spec has this laser? Is it basically the same laser as the COM-00594 red laser with TTL control only?
Mostly interested in wavelengt to find the best bandpass filter.

Thanks in advance!