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    Yet annother Retroflag NESPi case with Mausberry, Softshutdown, DUO-LED, Momentary switches

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    nespinespi casemausberrycyperghost
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    • cyperghostC
      cyperghost @lostless
      last edited by

      @lostless Yes that's true you can solder if you mix with leaded one. But The connection is still not save against mechanical force therefore I used a new PCB and soldered through lugs (??).

      This is a high modded switch ...
      It has DUOLED support, software shutdown - surly doable with the orginial one but I don't like free wiring ;)
      But I think I will make a better solution with an etched PCB. I think I can organize all the needed equipment.

      lostlessL 1 Reply Last reply Reply Quote 0
      • lostlessL
        lostless @cyperghost
        last edited by

        @cyperghost I donโ€™t Iโ€™ll be pulling at these cables so not worried about that. Plus there is a beauty with cables all over the place. Looks more impressive to the technologically ignorant. Lol.

        cyperghostC 1 Reply Last reply Reply Quote 1
        • cyperghostC
          cyperghost @lostless
          last edited by cyperghost

          @lostless Well it doesn't matter as u usally don't look inside ;)
          But I checked your connections - well done ;)

          lostlessL 1 Reply Last reply Reply Quote 0
          • lostlessL
            lostless @cyperghost
            last edited by

            @cyperghost thx. Not my first project. ๐Ÿ˜œ

            1 Reply Last reply Reply Quote 0
            • caver01C
              caver01 @cyperghost
              last edited by

              @cyperghost said in Yet annother Retroflag NESPi case with Mausberry, Softshutdown, DUO-LED, Momentary switches:

              My route is much easier as it just used a Si-diode connected to mausberry-switch-ground.

              Are you saying you figured out a way to get the Mausberry circuit to cut power after a software-initiated shutdown using just a diode? Can you explain what you did with that diode given the fact that my circuit looks like this:
              0_1507566566886_NES_large.png

              My 4-player cocktail style cabinet built as a custom "roadcase"

              1 Reply Last reply Reply Quote 0
              • cyperghostC
                cyperghost
                last edited by cyperghost

                @caver01 If the SW brown is the ground of the switch then just connect any GPIO wire to it. This shutdowns the mausberry.

                  GPIO                               MAUSBERRY
                from Pie          DIODE            switch ground
                   O---------------->|----------------O
                

                I measured a voltage of 3-4V between the switch poles.
                The mausberry don't cares of the voltage source.
                Is it from the switch or feed from the diode ;)
                The diode is just for protection of the Pie against voltage feed-backs.
                But the transistor also works....

                caver01C 1 Reply Last reply Reply Quote 0
                • caver01C
                  caver01 @cyperghost
                  last edited by

                  @cyperghost
                  I see. So you are merely simulating the voltage that would go there if the switch were triggered by supplying that voltage from the GPIO. That makes sense, and definitely easier than connecting a solid state relay or transistor across both switch poles.

                  My 4-player cocktail style cabinet built as a custom "roadcase"

                  cyperghostC 1 Reply Last reply Reply Quote 0
                  • cyperghostC
                    cyperghost @caver01
                    last edited by

                    @caver01 Exactly. As the Mausberry mains provides the same ground to all connected devices I see no problem with different ground potentials also. So this should work in general. But it would be nice if you report back.

                    cyperghostC 1 Reply Last reply Reply Quote 0
                    • cyperghostC
                      cyperghost @cyperghost
                      last edited by cyperghost

                      @caver01
                      I tested with a bare mausberry switch - No Rasperry connected, no LED just the power plug via micro USB.

                      You measure between LED(+) and GROUND Reset Pad >> 0V
                      Now you connect SWITCH(+) and SWITCH(-) with one cable just for a second to simulate a momentary push button
                      You measure between LED(+) and GROUND Reset Pad >> 2,5V
                      The LED(+) simualtes a GPIO output voltage + diode = 3,3V-0,7V=2,5V
                      Now connect LED(+) to SWITCH(-) (just 1 seconds) and measure between LED(+) and GROUND Reset Pad >> 0V

                      So this seems to work in general
                      I used a 1N4002 Diode ... This shuts against 100V and I can provide 1A through ;)
                      A bit overgrowen but I don't know any cheaper parts...

                      EDIT:
                      I measured voltage between the switch-pads!
                      These are 5,0V and if you press the power switch the GPIO will receive back-draws and may get damaged .... So use the diode to protect the Pi - I don't know any cheaper life insurance (and this is a working one)

                      1 Reply Last reply Reply Quote 0
                      • lostlessL
                        lostless
                        last edited by lostless

                        @cyperghost @day Word of warning. I think i just burned out my GPIO by my setup and redoing my image without the GPIO script installed in a pull up mode. Even though i had a 10K resistor to lower current, the pin was not set up at that time.. GPIO on any pin is not functioning. Im rethinking hooking up in pulldown mode just to avoid this.

                        found out that the 3.3 volt line is not needed. if a gpio pin is set as pullup, it gives you 3.3 volts on the pin and all you have to do i ground it. i have another issues where the gpio just stopped triggering. on my other card, its triggering just fine

                        cyperghostC 1 Reply Last reply Reply Quote 0
                        • cyperghostC
                          cyperghost @lostless
                          last edited by

                          @lostless But I think you have to stick to Python. Can you post code please?

                          lostlessL 2 Replies Last reply Reply Quote 0
                          • lostlessL
                            lostless @cyperghost
                            last edited by

                            @cyperghost i will when i figure out whats wrong with my code and why it stopped working. could be something simple as permission issues.

                            1 Reply Last reply Reply Quote 0
                            • lostlessL
                              lostless @cyperghost
                              last edited by lostless

                              @cyperghost @day
                              ok, come to find out, you don't need to feed the gpio 3V. setting it as a pullup automatically sets it to 3.3V, I guess? its working! so new image of final. 0_1507845132488_IMG_0115.jpg
                              now for the scripting. i want to thank @Heyoeyo for this and helping me understand a tad bit of python. Im using pin 32 so thats been made. change the pin to whatever one you're using. The file is in the home folder called reset.py

                              import RPi.GPIO as GPIO
                              import time
                              import os 
                              
                              # Define which pin u're using for the reset button (change this to whatever pin you use)
                              resetBtn = 32
                              
                              
                              # Use 'board' pin numbering (i.e. the zig-zaging numbering scheme)
                              GPIO.setmode(GPIO.BOARD)
                              # See:   https://pinout.xyz/   for the pin layout
                              
                              # Set the resetBtn pin to an input and enable the pull-up resistor
                              GPIO.setup(resetBtn, GPIO.IN, pull_up_down = GPIO.PUD_UP)
                              
                              # Define a function which will be called when your reset button is pressed
                              def interrupt_resetBtn(channel):
                              
                                      # Print indication to console
                                      print "You pressed the reset button!"
                              
                                      # Code for detecting/ending an
                                      # emulator would go here
                                      os.system('/home/pi/exit.sh')
                              
                              
                              # Enable reset button interrupt to trigger on a falling edge (i.e. high-to-low transition)
                              GPIO.add_event_detect(resetBtn, GPIO.FALLING, callback = interrupt_resetBtn, bouncetime = 1000)
                              
                              # --------------------------------------------------------------------
                              
                              # Now just wait forever for the user to press a button
                              # The sleep time doesn't really matter, make it long enough so it isn't wasting cpu cycles
                              while 1:
                                      time.sleep(5)
                              

                              so this just calls for a shell script called exit.sh i made in the home folder. thanks to @meleu for this. (What would do without him?)

                              # Terminate any emulatorcall!
                              # This works just for RetroPie!
                              emucall="$(sed -n 4p /dev/shm/runcommand.info | tr -d '\\"' | tr '^$[]*.()|+?{}' '.' | sed 's/[^ ]*=[^ ]* //g')"
                              # If there's an emulator running, we need to kill it and go back to ES
                              if [[ -n "$emucall" ]]; then
                                  emupid="$(pgrep -f "$emucall" | tr '\n' ' ')"
                                  pkill -P "$(echo $emupid | tr ' ' ',')"
                                  kill "$emupid"
                                  wait "$emupid"
                                  sleep 5 # maybe it can be lesser
                              fi
                              

                              this needs to be made executable, if you called the file exit.sh

                              sudo chmod +x /home/pi/exit.sh
                              

                              now add to /etc/rc.local

                              python /home/pi/reset.py &
                              

                              right before
                              exit 0
                              reboot andnow the reset can be used to exit back to es. if you want to make reset do something else, remove the

                                      import os
                                      os.system('/home/pi/exit.sh')
                              

                              and put in the code you want it to do.

                              J 1 Reply Last reply Reply Quote 1
                              • lostlessL
                                lostless
                                last edited by

                                This is my mauseberry custom script that seems to be working. Im starting to actually understand this scripting stuff. Thanks to @meleu and @cyperghost and tad bit of me piecing this together form their scripts.
                                so edit the /etc/switch.sh file after installing the mauseberry driver.

                                #!/bin/bash
                                
                                #this is the GPIO pin connected to the lead on switch labeled OUT
                                GPIOpin1=23
                                
                                #this is the GPIO pin connected to the lead on switch labeled IN
                                GPIOpin2=24
                                
                                echo "$GPIOpin1" > /sys/class/gpio/export
                                echo "in" > /sys/class/gpio/gpio$GPIOpin1/direction
                                echo "$GPIOpin2" > /sys/class/gpio/export
                                echo "out" > /sys/class/gpio/gpio$GPIOpin2/direction
                                echo "1" > /sys/class/gpio/gpio$GPIOpin2/value
                                while [ 1 = 1 ]; do
                                power=$(cat /sys/class/gpio/gpio$GPIOpin1/value)
                                if [ $power = 0 ]; then
                                sleep 1
                                else
                                
                                # End Emulationstation if condition of running binary is true 
                                # Thanks @meleu and @cyperghost for 99.9999999999999% of this
                                # Edited by @lostless
                                 
                                
                                espid="$(pgrep -f "/opt/retropie/supplementary/.*/emulationstation([^.]|$)")"
                                # Terminate any emulatorcall!
                                # This works just for RetroPie!
                                emucall="$(sed -n 4p /dev/shm/runcommand.info | tr -d '\\"' | tr '^$[]*.()|+?{}' '.' | sed 's/[^ ]*=[^ ]* //g')"
                                # If there's an emulator running, we need to kill it and go back to ES
                                if [[ -n "$emucall" ]]; then
                                    emupid="$(pgrep -f "$emucall" | tr '\n' ' ')"
                                    pkill -P "$(echo $emupid | tr ' ' ',')"
                                    kill "$emupid"
                                    wait "$emupid"
                                    sleep 5 # maybe it can be lesser
                                fi
                                
                                if [ "$espid" ]; then
                                   touch /tmp/es-shutdown && chown pi:pi /tmp/es-shutdown
                                   kill $espid
                                   exit
                                fi
                                # End Emulationstation if condition of running binary is true (v1.56)
                                
                                sudo poweroff
                                fi
                                done
                                

                                If anyone has ideas on how to improve this. Im all ears.

                                meleuM caver01C 2 Replies Last reply Reply Quote 0
                                • meleuM
                                  meleu @lostless
                                  last edited by

                                  @lostless said in Yet annother Retroflag NESPi case with Mausberry, Softshutdown, DUO-LED, Momentary switches:

                                  If anyone has ideas on how to improve this.

                                  yes. Use a proper indentation! ;-)

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                                  • lostlessL
                                    lostless
                                    last edited by

                                    @meleu oh forgive for my archaic organizational skill. Be kind Iโ€™m new to this. At least I got this far. Lol ๐Ÿ˜‚

                                    meleuM 1 Reply Last reply Reply Quote 0
                                    • caver01C
                                      caver01 @lostless
                                      last edited by caver01

                                      @lostless said in Yet annother Retroflag NESPi case with Mausberry, Softshutdown, DUO-LED, Momentary switches:

                                      If anyone has ideas on how to improve this. Im all ears.

                                      I highly recommend shifting this more complicated script over to a simplified python script (which uses efficient GPIO edge detection instead of a BASH sleep/wait loop) in conjunction with @meleu's shutdown service (with updated kill process code as needed).

                                      This solution @meleu's service idea takes everything that has been learned about killing emus and closing ES to save metadata and makes it into a generic script that runs no matter what is doing the shutdown. In other words, it is no longer tied to a "mausberry" script. Anything can call a shutdown and the service will trigger the proper kill commands. Then, with the complex stuff out of the way, your mausberry script can either revert to the original BASH script, or can be switched to python for more efficiency/less burden on the CPU. Performance gains are probably minimal.

                                      This has a certain elegance, as it is switch-agnostic.

                                      My 4-player cocktail style cabinet built as a custom "roadcase"

                                      1 Reply Last reply Reply Quote 1
                                      • meleuM
                                        meleu @lostless
                                        last edited by

                                        @lostless said in Yet annother Retroflag NESPi case with Mausberry, Softshutdown, DUO-LED, Momentary switches:

                                        @meleu oh forgive for my archaic organizational skill. Be kind Iโ€™m new to this. At least I got this far. Lol ๐Ÿ˜‚

                                        Hey bro, no need to apologize. I'm glad if I can inspire people to code. That was just an idea for improvement, as you requested. ;-)

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                                        • lostlessL
                                          lostless @meleu
                                          last edited by lostless

                                          @meleu I was hoping the sarcasm came though. I guess with English as your second language, it gets lost in translation. Iโ€™m not apologizing and I very much appreciate you and your desire to teach peoel. You have probably taught me more than any one else here. So keep it up.

                                          meleuM 1 Reply Last reply Reply Quote 1
                                          • meleuM
                                            meleu @lostless
                                            last edited by

                                            @lostless
                                            By the way, that emulator kill script is still not as strong as I want to make it to be. If more changes come to how runcommand invoke the emulators the script can fail to kill the emu... I'll try to make it stronger and then post the solution on that thread @caver01 linked.

                                            Cheers!

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