To use the laser via USB you still need to apply power via the other plug.

Toby

On 6/11/07, laurentien < luc.rolland@gmail.com> wrote:

Dear all,

I have bought one URG-04LX and I can read that it seems to be very good.
However, with the software provided, I have no signal going to it. I want to
apply this laser scanner to do 3D object reconstruction b y mounting it a a
robotic arm on top of a Pioneer platform.

The problem is twofold: I do not have proper documentation that would help
troubleshoot and the supplier is not responding to my messages.

Do you have any suggestion on how to use the USB link ?

LHR


Toby Collett wrote:
>
> I've done some playing with the laser and pmap/amcl, seemed to work
> okay, no real numbers and I havent used the SICK for comparison.
>
> Ill be interested to hear what you think of it once youve had time to
> try it properly.
>
> Toby
>
> Brian Gerkey wrote:
>
>>
>> On Sep 29, 2005, at 11:12 PM, Jonathan Paxman wrote:
>>
>>>
>>> I wonder if anyone has written (or is writing) a driver for the Hokuyo
>>> URG laser range finder?
>>
>>
>> Yes, indeed. Toby Collett has done just this, and checked it into CVS.
>> It's a player 2.0 driver, so you'd have to work from CVS to try it
>> out. Alternatively, I think Toby mentioned that he has a player 1.6
>> version of the driver; maybe he'll post it somewhere?
>>
>>>
>>> Since the URG returns 768 points per scan, presumably this would
>>> involve modifying the laser interface to increase the value of
>>> PLAYER_LASER_MAX_SAMPLES (401 by default). Would increasing this
>>> value break anything else?
>>
>>
>> In part because of the URG, that value is 1024 in player 2.0 . The
>> player 1.6 version of the driver probably skips scans in order to fit.
>>
>>>
>>> For information, the Hokuyo URG-04LX is a small (50x50x70mm, 150g)
>>> short range (up to 4m) laser rangefinder. It is low power (500mA @
>>> 5V), high resolution (1024 points per revolution) and wide angle (240
>>> degrees). Scan rate is 10Hz.
>>
>>
>> Yeah, it's quite cute. Has anybody tried building a map with this
>> thing yet? I'm going to give it a try next week.
>>
>> brian.
>>
>
>
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