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Old 8th Apr 2019, 6:22 pm   #30
SiriusHardware
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Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 8,241
Default Re: MK14 programming interface - MK2

Tim: If you get a moment, could you have a look at these two diagrams, attached?

The first is the Pi-MK14 programming interface V2 modified to suit the JMP PCB in the way that I believe you modified yours, by shifting some of the output lines down and crossing the top two over.

The second is the version I propose to make the 'final' JMP version. In this version, instead of swapping over the optocoupler output connections to columns 6 and 7, I have swapped over the connections to GPIO 5 (IDC 29) and GPIO 7 (IDC 26) instead. This has the same effect, but keeps the left hand side of the circuit looking a bit tidier.
Attached Thumbnails
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Name:	MK14_Pizero_Interface_JMP_V1.0.jpg
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Name:	MK14_Pizero_Interface_JMP_V1.1.jpg
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