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GPIO PIN on 3b not working

Scheduled Pinned Locked Moved Unsolved Troubleshooting
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  • F Offline
    faspina1
    last edited by Dec 31, 2023, 3:01 AM

    I have had a rpi in place running a python written program that displays several web pages in a kiosk mode under chromium.

    A customize version of this project

    https://www.instructables.com/Raspberry-Pi-Wall-Mounted-Google-Calendar/

    I have 34simple push buttons (plunger buttons each with only two terminals) all wired to the pi (One pin to GPIO the other to GND) . It works fine. Pyton code below.

    Initialization code

    GPIO.setmode(GPIO.BCM)
    
    
    GPIO.setup(19, GPIO.IN, pull_up_down=GPIO.PUD_UP)
    GPIO.setup(20, GPIO.IN, pull_up_down=GPIO.PUD_UP)
    GPIO.setup(21, GPIO.IN, pull_up_down=GPIO.PUD_UP)
    GPIO.setup(26, GPIO.IN, pull_up_down=GPIO.PUD_UP)
    

    Variable loaded

        input_state_back = GPIO.input(19)
        input_state_forward = GPIO.input(20)
        input_state_view = GPIO.input(26)
        input_state_change = GPIO.input(21)
    

    Logic to test

    if input_state_change == True
      do some stuff
    

    The code has been running on the pi 5 years, great.

    So I have another PI that I built with MM, getting the screen like I want it to replace this one in the kitchen.

    Take the SD card out of the test box put in in the kitchen pi, crank up MM and then use MMM-Buttons to configure the pins. The last step in my move to replace it.

    I got nothing
    pins will not register when I press them

    MMM-Button Config below. I am watching for events in the log and Ihave notification on the screen. I have successfully hooked up MQTT to receive notification as well. I have gooled all over and I can’t figure out why the buttons will not work when wired up the same way.

    		{
    			module: 'MMM-Buttons',
    			config: {
    				buttons: [
    					{
    						pin: 21,
    						name: "User Present",
    						shortPress: {
    							notification: "REMOTE_ACTION",
    							payload: {action: "USER_PRESENCE", value: true}
    						},
    						longPress: {
    							notification: "REMOTE_ACTION",
    							payload: {action: "REFRESH"}
    						}
    					},
    					{
    						pin: 19,
    						name: "User Present",
    						shortPress: {
    							notification: "REMOTE_ACTION",
    							payload: {action: "USER_PRESENCE", value: true}
    						},
    						longPress: {
    							notification: "REMOTE_ACTION",
    							payload: {action: "REFRESH"}
    						}
    					},
    					{
    						pin: 20,
    						name: "User Present",
    						shortPress: {
    							notification: "REMOTE_ACTION",
    							payload: {action: "USER_PRESENCE", value: true}
    						},
    						longPress: {
    							notification: "REMOTE_ACTION",
    							payload: {action: "REFRESH"}
    						}
    					},
    					{
    						pin: 26,
    						name: "User Present",
    						shortPress: {
    							notification: "REMOTE_ACTION",
    							payload: {action: "USER_PRESENCE", value: true}
    						},
    						longPress: {
    							notification: "REMOTE_ACTION",
    							payload: {action: "REFRESH"}
    						}
    					},
    				]
    			}
    		},
    

    Any body have any idea what is going on?

    S K 2 Replies Last reply Dec 31, 2023, 3:50 AM Reply Quote 0
    • S Offline
      sdetweil @faspina1
      last edited by Dec 31, 2023, 3:50 AM

      @faspina1 do you have things connected correctly? mmm-buttons uses the bcm numbering

      https://raspberrypi.stackexchange.com/questions/12966/what-is-the-difference-between-board-and-bcm-for-gpio-pin-numbering/12967#12967

      I don’t know what you did before

      Sam

      How to add modules

      learning how to use browser developers window for css changes

      F 1 Reply Last reply Dec 31, 2023, 5:31 AM Reply Quote 0
      • F Offline
        faspina1 @sdetweil
        last edited by Dec 31, 2023, 5:31 AM

        @sdetweil Yes. They were working and continue to work with my other program I never moved the , they are mounted and connect to the RPI.

        What I have noticed is that after powering off , i have to run a python test program on each of the 4 pins. Then they start suddenly working on MM.

        I have verified this twice cause I thought I was nuts. I may still be nuts but that is exactly what is happening.

        the 4 push buttons i have configured for USER_PRESENCE, REFRESH, MONITORTOGGLE, and RESTART

        Pins 26,21,19,20

        S 1 Reply Last reply Dec 31, 2023, 12:58 PM Reply Quote 0
        • K Online
          karsten13 @faspina1
          last edited by Dec 31, 2023, 12:16 PM

          @faspina1

          did you enable the gpio stuff via raspi config on the new pi?

          1 Reply Last reply Reply Quote 0
          • S Offline
            sdetweil @faspina1
            last edited by Dec 31, 2023, 12:58 PM

            @faspina1 I have seen a couple other users report the same thing. I do not know why.

            I looked thru raspi-config, and only saw remote GPIO.

            you might try that

            sudo raspi-config
            interfaces
            

            as a short term, you could add running the test python as part of the mm startup script

            if you used my install script, and use pm2 to launch mm , that script is

            ~/MagicMirror/installers/mm.sh
            

            Sam

            How to add modules

            learning how to use browser developers window for css changes

            F 1 Reply Last reply Dec 31, 2023, 1:06 PM Reply Quote 0
            • F Offline
              faspina1 @sdetweil
              last edited by Dec 31, 2023, 1:06 PM

              @sdetweil I may add the python code to the start of the script. Enable the pins in Python and then read them . See if that works.

              I see that others have reported as well

              1 Reply Last reply Reply Quote 0
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