In SX Microcontrollers, SX/B Compiler and SX-Key Tool, mwkohler wrote:

I have two sx48 proto boards both running at 50,000 hz and i am trying to serially send data from one to the other.  I can only get them to communicate when I leave the sx-key on the board (after programing it) that is sending the data.  The boards work great like this.  Otherwise, when I disconnect the sx-key, there is no sign of communication.  I have tried several different Baud rates all the way down to 1200 with no avail.  I have included the programs I am using in case it is something I am doing with the software.  I figure it is a power problem since when the key is connected to the board it probably is boosting the power through the usb port.  I just don't know where to go from here.  Any help is appreciated.

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