RGB laser blocks with a TTL/Analog driver, problems, and safe laser temp
Hello
I don't know if this has been covered so forgive me if this has been talked about.
I decided to make a projector using a ghostbusters ghost trap lunch box and has very little space inside so I ordered an RGB block from golden star laser and ran into a problem with the included all in one driver that has TTL and Analog modes and well it did not work as expected, I could not get a good color range and the laser was not cutting off the beam when needed so it left trails and poor response so I pulled it and switched to the simpledrive V2500 for each laser and works great so I started digging in to why the stock driver did not work right in analog mode, when i switched quick show and laserOS back to a TTL setting it worked so that got me thinking and looked up the specs of the drivers and found that the bandwidth for the original driver was 30khz while the Simpledrive has a bandwidth of 100khz, I was not expecting such a huge difference and I think that was the problem so I am now wondering if the combo TTL/Analog drivers from china are all like that.
Has any one else ran into this problem?
I know for some of the beginning people building projectors from these types of drivers know of this difference as it made a large impact on the quality of the displayed images
are there combo drivers that have a wider bandwidth? It's nice not wasting as much power in heat for a compact build but if it can't display a parrot correctly "from quickshow" then they seem some what useless unless your just after simple stuff like a beam show or Lumia effects.
I want to slip in a second question on what most of you guys would consider a safe operating temp range for the lasers, running a complex image i am seeing an internal heat of about 47C and that is with a cooling fan
Thanks
Draco
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