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Old 06-08-2014, 01:04 PM #1
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Default linux computer + DAC + aop + driver

Hi

I want to pilot a laser with a linux computer and with galvanometers bought on ebay (25 k galvo scanner). I had to add a DAC MCP4822 to have output between 0 and 5V and I made the assembly below to have output between ~-5V and ~+5V

http://laserpointerforums.com/attach...ection-amp.png

When I connect the ouput to the driver nothing happens when I change the voltage :-(

Thanks for any hint

Karim


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Old 06-08-2014, 01:42 PM #2
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Default Re: linux computer + DAC + aop + driver

On the driver board there is the pins : - GND and + but only two of them seem connected.
I do not connect the ground to the driver only ilda- and ilda+ (see schematic in the previous post)
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Old 06-08-2014, 02:31 PM #3
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Default Re: linux computer + DAC + aop + driver

fixed
groun problem
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Old 06-08-2014, 05:30 PM #4
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Default Compare Gas and Electricy prices

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