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KC868-E16S board/schematic errors
#1
I have been trying to get the A1-A4 inputs working without success.

Working from this drawing: KC868-E16S schematic

I have found some errors:

[Image: KC868-E16-S-fault.png]

I have marked up the errors in red.

A1/CHA1 is connected to R92
A2CHA2 is connected to R91
A3/CHA3 is connected to R83
A4/CHA4 is connected to R82

It seems that the labelling on the board connectors, shown below, is incorrect.

[Image: Screenshot-2023-04-16-at-11-44-40.png]

A1 is connected to GPIO36
A2 is connected to GPIO34
A3 is connected to GPIO35
A4 is connected to GPIO39


Input AA1 is connected to LM224 pin 12
Input AA2 is connected to LM224 pin 10
Input AA3 is connected to LM224 pin 5
Input AA4 is connected to LM224 pin 3

The component labelling of the board matches the corrections that I have made for you on the drawing.

Additionally, you will see that two of the zero ohm resistors on my board, R82 and R83 are open circuit, marked with an X.

Please can you tell me how this can be resolved and provide a link to a correct drawing for my board.

Please can you confirm which GPIO is connected to which Analogue input.

Thank you.
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Messages In This Thread
KC868-E16S board/schematic errors - by AshS - 04-16-2023, 09:41 AM
RE: KC868-E16S board/schematic errors - by admin - 04-16-2023, 11:02 AM
RE: KC868-E16S board/schematic errors - by AshS - 04-16-2023, 11:08 AM
RE: KC868-E16S board/schematic errors - by admin - 04-17-2023, 12:41 AM
RE: KC868-E16S board/schematic errors - by AshS - 04-17-2023, 06:43 AM
RE: KC868-E16S board/schematic errors - by admin - 04-17-2023, 08:10 AM
RE: KC868-E16S board/schematic errors - by AshS - 04-17-2023, 09:21 AM
RE: KC868-E16S board/schematic errors - by admin - 04-17-2023, 10:13 AM

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