Crowpanel 5in / 7in HMI GPIO Analog input issue.

mfujitamfujita
in Elecrow HMI Display

I previously used 3.5in HMI, and it has 2 Analog (25 and 32 pin) input GPIO port.
5in and 7 in HMI have only 1 GPIO with 38 pin which does not take Analog input. I have 5in V3 HMI, and I need to read 2 Analog signals, so I needed to modify GPIO to connect to 17 and 18 pin. I removed R4 and R12 according to this modification to disable I2S lines.
In future product, I would would recommend to use any 2 pins from 10, 11, 12, 13. These pins are currently not used, and all take both A/D. This is better option to improve products than only 38 D_pin on GPIO port. Any reason cannot do this?

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Comments

  • mfujitamfujita

    @mfujita said:
    I previously used 3.5in HMI, and it has 2 Analog (25 and 32 pin) input GPIO port.
    5in and 7 in HMI have only 1 GPIO with 38 pin which does not take Analog input. I have 5in V3 HMI, and I need to read 2 Analog signals, so I needed to modify GPIO to connect to 17 and 18 pin. I removed R4 and R12 according to this modification to disable I2S lines.
    In future product, I would would recommend to use any 2 pins from 10, 11, 12, 13. These pins are currently not used, and all take both A/D. This is better option to improve products than only 38 D_pin on GPIO port. Any reason cannot do this?

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