Experiance Scannersafety V1 - V3?

[mccarrot]

And the english manual

[greenalien]

Thanks for the manual - I didn't realise that there's no defined shutter control on this board - Or do you just use one of the 4 opto-isolated in/out channels? (I might just have answered my own question here!)

Also, there's no 'zone' provision - I'd definitely want a board that has a 'safe' zone and an 'uncontrolled' zone - on a 'above/below horizon' basis, to allow for static beams on bounce mirrors, mirrorballs etc.

[mccarrot]

I have asked the same question about the shutter to the maker

V2 and V3 got zones I will check for a manual about the zones.

Personaly I dont need zones, becouse I'm using Pangolins projection zones for this.

I hope Dave can do some tests with Bounce mirrors and this board.

[greenalien]

I have asked the same question about the shutter to the maker

Great minds think alike!

Personaly I dont need zones, becouse I'm using Pangolins projection zones for this.

As far as I can see, this board will be effective for the entire scanned area, so will override any software-defined projection zones.

However, looking at their site, it looks as if the V2 board has one zone, which has to be worth the extra 10 Euros. If there's a group buy for the V2, count me in.

[mccarrot]

As far as I can see, this board will be effective for the entire scanned area, so will override any software-defined projection zones.

Yes?

The only case when this is a problem is when you have one static beam (at a bounce mirror) and the galvo is not moving.

[mccarrot]

Thanks for the manual - I didn't realise that there's no defined shutter control on this board - Or do you just use one of the 4 opto-isolated in/out channels? (I might just have answered my own question here!)

Here is a answer of the maker:

There is no output for a mechanical shutter because the German DIN only writes you ave to shut off the lasers, its not interesting if its electrical or mechanical. You can wire your mechanical shutter to the emergency switch.

You could also use a opto-coupler output to drive the shutter (not directly)

[Guido]

Hi Dave,

nice to read that you got the Board.

Works very simple as you see. If you have and Problems you know where to find me :-)

About the English Translation...I did my Best :-)

I build this Circuit because "A cheap solution is better than
no Solution". About the Zones: I send you V2 which only have one Zone ( full Wide, from the Top XX Percent down depending on the 2nd Adjustable Resistor).

I dont use the Intensity Output. Its no secret today to sample the Feedback 5-10 Times in less than 20ms. So if the Scanners dont move this is a Failure and the Lasers are switched
off. If you start the Show a movement must be detected before the Optocoupler
open the Lasers. But this happend fast enough i think... :-)

About the Shutter: I decide NOT to support a mechanical Shutter.
As i wrote above i dont use the Intensity Signal to detect if a Laser is on. So if there is no Movement my
Board detects a Failure and swiched Off the Laser. At Showstart or after a "Dark Part" in the Show ( need only to be a few ms )
it can / will happen that the Shutter is too Slow to open until the Show continous..

In Germany there are regulations how to build a Laserprojector which must be Tested by the TUEV before
using him in Public. The TUEV is a German Short for "Technical Control Union" which also controll our Cars every 2 Years.. :-)
Hard to Explain... :-)

In his Regulation there must be a Possibility to to swich off the Lasers using a Emergency Switch by the Operator in
case of Failure. There is NO Declararion if this must be done Electrical or mechanical. But i think if you ask 2 Guys from the
TUEV you get 3-5 Answers...

I think its the best Way to use the external Emergency Switch to open the Interlock of the Safety for electrical Swich-Off
AND to close the Shutter at the same Time.

About the Idea with the ILDA Breakout Box including a Safety...
I think ( based on the little Bit English i learned 20 Years ago ) you are meaning
a combination of Scannersafety and a Circuit to convert the Difference-Signal from
the ILDA Sub-D to Single ended ??

About V3: There is a Version which can "learn" zones in a Way i dont like so much..
i am alwasy trying to find a better way so V3 is not finished.
This Time the Lasershow must project a single Beam to the upper left of the Zone,
than a Key must be presst in the Configuration-Software. After this the Beam must
be positioned at the lower right Corner of the Zone and a 2nd Key must be pressed.
Then the first Zone is teached. While this Time the Safety must be connected via
RS-232 with the PC. On th PCB you see the free Place for the Levelshifter ( Max232 a.e. )

Maybe some of you note on my Website that i am very closed to Jojo ( Joachim Mueller,
www.jmlaser.com ) . We dont have much Customers "On the other Side of the big Lake" :-)

We know that one of the Problem is the bad exchange Rate US$ / Euro and also
the Shippingcosts are too high for only one pcs.

But we both promised all of you to do what we can...

If Dave Tested the Unit and everythink is OK for him ( I think you belive his Opinion )
and you decide for a Group Buy i will think about the Price again.

[greenalien]

Apart from the possible speed limitations, is there any reason why you could not feed the 5v Shutter signal (ILDA pin 13) through one of the 4 I/O channels, and then use the output signal to drive a transistor switch (Darlington type) to actuate a GM20?

If someone wants to organise a group buy for the V2 boards, I'll be happy to look after the UK distribution.

[greenalien]

Dave - how's the testing going?

[mccarrot]

Dave is busy with a big RGB , But looking at the downloads of the manual it seems a safety board is not very popular, so I hope we can still do a group buy.

I want at least 2 boards, V1 or v2 I don't mind.