pyIPER PIL-Box command error: illegal retval

[Craig Bladow]

I've checked my USB-serial converter for proper operation, and then modified it to provide 5 volt signals as it was set to 3.3 volts. I have also tried it on a Windows computer with the error that the PIL box is not respondingl I believe the baud rate is correct but my ancient oscilloscope failed before I could measure the actual signal!

I currently suspect a wiring mistake on my part.