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→Using free RBPi GPIO pins as Extra Switches
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+You can check the schematic:+http://wiki.zynthian.org/images/4/44/Zynthian_allinone.sch.svg 8+the UI active layer’s MIDI channel will be used.+So, the only things you have to do is:+* update your zynthian+* connect some kind of switch between pin1-4 and pin5 (GND)+* from the webconf tool, configure your wiring layout accordingly to the used pins: ZYNTHIAN_WIRING_SWITCHES’: “100,103,108,111,106,107,114”+==Here are the default pin assignments:==+ pin 1 => GND+ pin 2 => WiringPi GPIO 106
− pin 3 => WiringPi GPIO 107
− pin 4 => WiringPi GPIO 114
− pin 5 => WiringPi GPIO 115
−And the current hardcoded configuration is like this:+ PANIC switch (6th zynswitch) => pin 2 (106)+ short press => All Notes Off
− bold (long) press => All Sounds Off
− Unused (6th zynswitch) => pin 3 (107)
− Unused (7th zynswitch) => pin 4 (114)
− MIDI CC64 (Sustain Pedal) (8th zynswitch) => pin 5 (115)
−Switches are normally open, closing to pin 1 (GND).+
The All-In-One circuit can be tweaked for having 4 extra switches that can be used for a sustain pedal, MIDI switches (very useful for SooperLooper!), or for sending some specific MIDI message (program change, etc.).
+==Using All-In-One module or Zynscreen display (MCP23017)==
+The All-In-One circuit (or the Zynscreen display) can easily be modified by adding up to 4 extra switches which can be used for a panic button, a sustain pedal, or other MIDI-CC switches (very useful for SooperLooper!).
The unused pins in the MCP23017 are:
The unused pins in the MCP23017 are:
−pin 27 (GPA6)
+* pin 27 (GPA6)
−pin 28 (GPA7)
+* pin 28 (GPA7)
−pin 7 (GPB6)
+* pin 7 (GPB6)
−pin 8 (GPB7)
+* pin 8 (GPB7)
−The first 2 are bound to INTA and the other 2 to INTB.
+The first 2 are bound to INTA and the other 2 to INTB
+If you have a recent version of the All-In-One circuit (or a Zynscreen display), it includes an extra row-pin connector (SW1) that allows to easily use these extra GPIO ports. If you don't, you have to solder your wires directly to the MCP23107 pins.
+This is the pin assignment for the row-pin connector (SW1):
+* pin 1 => GND
+* pin 2 => WiringPi GPIO 106
+* pin 3 => WiringPi GPIO 107
+* pin 4 => WiringPi GPIO 114
+* pin 5 => WiringPi GPIO 115
+You can check the All-In-One schematic [http://wiki.zynthian.org/images/4/44/Zynthian_allinone.sch.svg here]
+[[File:pcb_all-in-one_v2.1.jpg|700px]]
+[[File:module_all-in-one_v2.1.jpg|700px]]
+You can check the Zynscreen schematic [http://wiki.zynthian.org/images/4/40/ZynScreen_v1.3.svg here]
+[[File:Zynscreen sw1.jpg|700px]]
+So, if you have a recent version of All-In-One circuit (or a Zynscreen display), you can follow these simple steps to add your custom switches:
+* Update your zynthian
+* Solder the 5 row-pin connector to your All-In-One circuit (or Zynscreen display) (SW1)
+* Connect some kind of switch between pins 2-5 and pin 1 (GND). The switches are normally open, closing to pin 1 (GND).
+* From the webconf tool go to the hardware menu => wiring section:
+** Select MCP23017_EXTRA as wiring layout (MCP23017_ZYNSCREEN if you have the Zynscreen display). This will set your ZYNTHIAN_WIRING_SWITCHES to “100,103,108,111,106,107,114,115”
+** Configure the desired actions (advanced options). The UI active layer’s MIDI channel will be used for MIDI actions.
+You can read more about this subject here:
+* https://discourse.zynthian.org/t/extra-switches-sw1-sustain-pedal-panic-button-etc/1843
+* https://discourse.zynthian.org/t/extra-switches-now-customizable-from-webconf/2765
+===Example 1: Adding a "Panic Button" to an official v2 zynthian===
+You could add a panic button to your zynthian box. Simply make a hole, install the switch-button, and connect it to SW-1's pins 1 & 2.
+[[File:Zynthian v2 panic switch.jpeg|700px]]
+Next, configure the actions in the webconf tool as follow:
+* Type: Ui Action
+* Short push: All Note Off
+* Bold push: All Off (All Notes Off + All Sounds Off)
+* Long push: Reboot
+===Example 2: External 3 switches pedal + sustain pedal===
+Our dear friend, @wolfpaw98, has developed this amazing pedal set. He uses a MIDI connector (DIN-5) to make the 5 pins from the case accessible. The main pedal is connected to the DIN-5, and a Jack-mono connector is used to connect the sustain to the main pedal.
−[[File:Zynthian pedals 01.jpeg|700px]]
−[[File:Zynthian pedals 02.jpeg|700px]]
−[[File:Zynthian pedals 03.jpeg|700px]]
−[[File:Zynthian pedals 04.jpeg|700px]]
−You can read more about this subject here:
−* solder a 5 row-pin connector to your AllInOne circuit
+* https://discourse.zynthian.org/t/funny-pedalboxes-for-zynthian-using-extra-switches/3331
−==Zynthian without encoders using legacy 2in1 module for Extra Switches==
−You can configure a zynthian without controllers (encoders+switches) for using an ancient 2in1 module to get up to 4 extra switches that you can bind to CUIA or MIDI actions.
−This is the wiring layout configuration you have to setup in the webconf tool:
−[[File:Webconf_noencoders_2in1_extra_switches.png|700px]]
−{{NoteBox|As the 2in1 module doesn't use the MCP23008's INTA pin, switches are detected by polling, so i strongly recommend to only configure the pins you are actually using.}}
−==Using free RBPi GPIO pins as Extra Switches==
−In the same way, you can configure any free GPIO pins in the Raspberry Pi as extra switches. You only have to configure the "Switches Pins" in the webconf tool.