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Hermes Ctrl Outputs

Posted: Sun Jun 23, 2019 12:10 pm
by bobltx
For some unknown reason E1 pins 11,13,15 and 17 are sitting at low on my RP with the SDR application. They were switching the band pass filters quite happily for the last couple of years
now they will not change. Pins 7 and 9 still function with no problem. The pins in question were
driving a CD4028B as part of the switching curcuit.
I have tried another SD card image in case it was a software fault.
Does this mean my RP is now not suitable for purpose and is now to be assigned to the bin :roll: ?