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I am trying to control a SainSmart 4 channel 12VDC relay from Labview and having some trouble. I was hoping to control the module via serial comms but this does not seem to be working. Can anyone suggest an example that I might follow to set this up?

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    \$\begingroup\$ That's not a USB-serial device. You need some sort of driver which can talk to an FT-245. You might be able to write it yourself, or even have labview execute a command line program or link against some custom C code or something. \$\endgroup\$ – Chris Stratton Mar 12 '13 at 2:07
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The relay board uses the FT245RL FTDI chip. Labview examples for interfacing with FTDI chips can be found at http://www.ftdichip.com/Support/SoftwareExamples/CodeExamples/LabVIEW.htm

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