[sudo-discuss] giant laser for the robot

[Jake]

i can't tell by looking at the beam.

how do you find out such a thing?  we need some sort of spectrometer since 
it's bright enough to be detected through almost any filter.

On Thu, 19 May 2016, Adam Munich wrote:

> 1064nm, 808nm or 975nm?
>
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> On Thu, May 19, 2016 at 12:55 PM, Jake <jake at spaz.org> wrote:
>> i was planning to just make an opaque, hinged privacy temporary-wall for
>> when the robot is doing something dirty like that.  It will help with
>> ventilation too, which is a bigger problem than arc flash with the plasma
>> cutter.
>>
>> but a plasma cutter is such an awesome tool, i think it's totally worth the
>> annoyance of having to make it safe for puny humans.
>>
>> -jake
>>
>>
>> On Thu, 19 May 2016, Adam Munich wrote:
>>
>>> You wont find an NIR blocking plastic curtain, unless it's black vinyl.
>>>
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>>> On Wed, May 18, 2016 at 11:41 PM, Patrik D'haeseleer <patrikd at gmail.com>
>>> wrote:
>>>>
>>>> Cool! Do you have a model number on there somewhere?
>>>>
>>>> I assume this will be an IR laser if it's a diode array. So if we get a
>>>> safety curtain, we'll need one that can block both UV from the plasma
>>>> cutter, and IR from the laser. Ditto for safety goggles. I assume that's
>>>> feasible, although likely a little harder than protecting against just
>>>> one
>>>> of those.
>>>>
>>>> Patrik
>>>>
>>>> On Wed, May 11, 2016 at 1:58 PM, Jake <jake at spaz.org> wrote:
>>>>>
>>>>>
>>>>> I forgot to include this link:
>>>>>
>>>>> http://www.idacontrol.com/articles.php?nid=10
>>>>>
>>>>> and a picture of the laser:
>>>>>
>>>>> http://i.imgur.com/eXwf7Lo.jpg
>>>>>
>>>>> I looked it up and to put out 75 watts of laser power, we should
>>>>> probably
>>>>> feed in about 187 watts, or 2.5 times as much DC power in.  That means
>>>>> we
>>>>> need 112 watts of cooling with the liquid path.
>>>>>
>>>>> we can put sonar sensors on the front of the laser so we can pre-focus
>>>>> it
>>>>> by distance while preparing works to be cut.
>>>>>
>>>>> -jake
>>>>>
>>>>>
>>>>> On Wed, 11 May 2016, Jake wrote:
>>>>>
>>>>>> we got a giant laser for the robot.  This will allow it to cut things
>>>>>> precisely for us, even if they're really large.
>>>>>>
>>>>>> of course to do this we'll have a safety interlock to prevent use by
>>>>>> untrained people, and we'll have a safety curtain or folding wall to
>>>>>> deploy
>>>>>> around the robot while the laser is enabled, so nobody can accidentally
>>>>>> see
>>>>>> the light coming from it.
>>>>>>
>>>>>> I don't know the wavelength of the laser, but it's a giant laser diode
>>>>>> array with a lens on the end, and it has a water cooling jacket, and i
>>>>>> think
>>>>>> i was told it's a 75 watt laser.  we do have a way to power it.
>>>>>>
>>>>>> if anyone wants to get involved with playing with this, please let me
>>>>>> know. I think we could get it to the point where it could cut through
>>>>>> some
>>>>>> serious stuff, and the extremely large work area of the robot is a big
>>>>>> deal.
>>>>>>
>>>>>> -jake
>>>>>>
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