Forums > MaxMSP

Serial object connecting to beamer

January 30, 2013 | 10:10 pm

Hey,

I'm trying to switch a beamer on/off using the serial object without any luck.
I can select the right port called USB-Serial-controller and I set the correct baud-rate and other settings.
The only thing i get out of serial object is 'read 0' and 'write' (out the right outlet).

I attached images from the pdf of the serial messages of the Optoma GT750.
Don't know if the codes i send are correct,.. i attached the sample patch

I use this serial to usb converter: with a PL-2303 driver v.1.4.0

http://dx.com/p/usb-to-rs232-serial-adapter-cable-94539

I tried also another beamer without any luck. Even when I turn on/off the beamer manually nothing is coming out the serial object, what normally suppose to happen because RS232 is handshaking, right?

Any clues or suggestions? Thanks in advance!

– Pasted Max Patch, click to expand. –

[attachment=213670,4969] [attachment=213670,4970]

Attachments:
  1. ScreenShot20130129at4.42.48PM.png

January 30, 2013 | 10:29 pm

hereby the full manual of the beamer i want to control:
http://www.optomaeurope.com/uploads/manuals/GT750-M-en.pdf
from page 50 is the RS232 Commands and Protocol Function List


January 30, 2013 | 11:12 pm

hi, I don’t know much about the topic, but the word "beamer" is a so-called pseudo-anglicism for "video projector", and isn’t really used outside of a few european (non-English-speaking) countries.

I hope you don’t find this condescending, i don’t know, I was thinking that this might help your googling a bit.
good luck,
Andreas


January 30, 2013 | 11:42 pm

thanks for the tip, i will keep that in mind,..
although I googled for solutions also with ‘video projector’ it’s good to know.


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