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Adding Extra I/O with the Zynaptik Module (view source)
Revision as of 10:26, 26 October 2021
, 10:26, 26 October 2021→Eight digital input switches selecting Program Change events
=== Introduction ===
=== Introduction ===
The Zynaptik module includes extra circuitry that is not soldered. You can solder on it 3 extra submodules and a 40 pin header for interfacing them:
The zynaptik module provides:
* 3 standard MIDI ports (IN, OUT, THRU)
* 16 x digital Input/Output
* 4 x Analog Input
* 4 x Analog Ouput
'''New modules''' (from 2021-04-01) include everything soldered on. Ready to work:
[[File:Zynaptik2_top.jpg|900px]]
In the other hand, '''older modules''' (before 2021-04-01) only have MIDI circuitry soldered on. You must solder some parts for enjoying all the functionality. You can [https://shop.zynthian.org/shop/product/zynaptik-expander-kit-379 buy the Zynaptik Expander Kit] or order the parts by yourself.
[[File:Zynaptik_top.jpg|900px]]
[[File:Zynaptik_top.jpg|900px]]
[[File:Zynaptik_40pin_header.png|300px|right]]
[[File:Zynaptik_40pin_header.png|300px|right]]
These are the ICs used by the Zynaptik:
'''+ Secondary MCP23017 (Digital I/O):''' It uses I2C address 0x21 and the 2 interrupt lines are connected to the RBPi GPIO. INTA to GPIO27 (pin 36) and INTB to GPIO25 (pin 37). The digital I/O are labelled as GPAx & GPBx on the Zynaptik's header schematic.
'''+ Secondary MCP23017 (Digital I/O):''' It uses I2C address 0x21 and the 2 interrupt lines are connected to the RBPi GPIO. INTA to GPIO27 (pin 36) and INTB to GPIO25 (pin 37). The digital I/O are labelled as GPAx & GPBx on the Zynaptik's header schematic.
'''+ MCP4728 (MOD-2 Analog Output):''' It uses I2C address 0x60 by default. The 4 analog output pins are labelled as DAx on the Zynaptik's header schematic.
'''+ MCP4728 (MOD-2 Analog Output):''' It uses I2C address 0x60 by default. The 4 analog output pins are labelled as DAx on the Zynaptik's header schematic.
It's being implemented currently and it's not available on zynthian software yet.
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=== Configuring Zynaptik for Testing 21/08/2021 ===
With the testing branch selected.
Add the 201 to 20... lines as described in the above.
This will generate the variables for these pins which will be picked up by the zynthian and will be configurable in the webconf interface.
[[File:Successful testing zynaptik in.png|600px|right]]
Notice:
No zynaptik component selected in the Wiring Option.
No Switches pins above 200 defined.
Interrupts default (27/25).
Zynaptik Config:
[[File:Zynaptic config wyleu-pedal.png|600px|right]]
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This is for a machine with AtoD input module (ADS1115) but no output module (MCP4728).
It is used to
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===Connect up to 4 Control pedals===
The zynaptik Analogue inputs can be used to generate MIDI CC control from a Standard Control Pedal.
[[File:IMG 20210825 165908.jpg|600px|right]]
[[File:Zynaptik control deal input settings.png|600px|right]]
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===Eight digital input switches selecting Program Change events===
Eight Momentary switches can be connected to the Zynaptik Digital INput pins and allocated to generate Programme Change Events.
[[ File:Wyleu pedalboard program change switches.jpg|600px|right]]
[[File:Zynaptik config analog in.png| 600px| right]]