IHSS57-36 with 7i92 don't move

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30 Sep 2021 23:37 #221926 by markusk
oh, wait.

Note: 26 pin header P1 will match standard parallel port pin-out if terminated with flat cable 26 pin receptacle/DB25F cable with pin1s connected (and header pin 26 left open)

could someone please clarify what 'with pin1s connected' means?
 

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30 Sep 2021 23:58 #221928 by PCW
Replied by PCW on topic IHSS57-36 with 7i92 don't move
DB25 pin 1 connects to HDR26 pin 1

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01 Oct 2021 00:07 #221929 by PCW
Replied by PCW on topic IHSS57-36 with 7i92 don't move

my question still stands - is there a bit-file to be found that configures the P1 the same way as P2 is with the default firmware? am i assuming correctly that the P1's pins still all should work fine?


Most standard firmware duplicates the P2 pinout on P1 (but you would have to edit the hal file to change the stepgen and GPIO numbers)
Unfortunately, if you damaged a bus switch (U4 or U6 which typically bear the brunt of excess/reverse voltage damage) ,
it will affect both connectors. These are cheap chips but tricky to replace unless  you are used to SMT repair.

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