Cheap Idea for a DRO

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OK Bill, I will do a controlled test of my BCD vernier to get the sequence and report back. I'll just code up a simple pulse generator in one of the PICs.

Cheers, John

OK I have done a test on the BCD vernier which is a Workzone 6" bought from Lidl or Aldi, can't remember which. I have attached an image of the state diagram.

It starts always at power up in Slow Read mode. To get from switch on to Fast Read (F.T) needs a Data then a Clock Pulse. To Zero at power up on route to F.T then its Clock then Data then Clock. When in F.T. to Zero needs a Data then CLock then Data then Clock. There are other states as shown in the diagram that are of no interest to our use I suggest.

John.