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BEWARE...ProgRock does not using RS232 voltage levels. Proper
RS232 has 12 volt logic, ProgRock has 5 volt logic. Hence the
suggestion to use the Arduino. The Sparkfun adaptor supports 5
volt logic but others may not.
On 19/08/2019 01:29, Robin Midgett
found that the USB to serial adapter from SparkFun was the
ticket to easy programming on the ProgRock. Any terminal
program will provide the communications.
Robin Midgett K4IDC
On Sun, Aug 18, 2019 at 6:31
PM Floyd Hollister <fhh11@...
to Bruce, Geoff and Alan. I appreciate you counsel. I will
dig out an Arduino and see where that leads me.
When I either solve the problem or surrender and build
another, I will let the forum know the resolution.