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Adding Extra I/O with the Zynaptik Module (view source)
Revision as of 22:53, 19 April 2021
, 22:53, 19 April 2021→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 currently unimplemented. The highest honour is deserved to the brave who kills this dragon ...
It's being implemented currently and it's not available on zynthian software yet.
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=== Installing Zynaptik Expander Kit ===
=== Installing Zynaptik Expander Kit ===
[[File:Zynaptik_kit_insert_header.png|300px|right]]
The core Zynthian kit is designed to allow novice to build a full device. Beware that the Zynaptik expander kit installation is more challenging, requiring some electronic construction skills including soldering and cutting. An intermediate hobbyist should be able to tackle the installation.
The core Zynthian kit is designed to allow novice to build a full device. Beware that the Zynaptik expander kit installation is more challenging, requiring some electronic construction skills including soldering and cutting. An intermediate hobbyist should be able to tackle the installation.
Insert one of the 10-pin 90 degree headers into the ADS1115 module. The pins go into the component side of the PCB extended through to the solder side. The ADS1115 is on the bent pin side of the header's plastic strip, not the straight pin side.
Insert one of the 10-pin 90 degree headers into the ADS1115 module. The pins go into the component side of the PCB extended through to the solder side. The ADS1115 is on the bent pin side of the header's plastic strip, not the straight pin side.
Insert the 40 pin header into the PCB with the short pins extending from the component side, through the PCB so that the plastic base sits on top of the component side of the PCB with its longer pins pointing up above the component side. It does not matter which way round this is inserted. Solder the short pins to the PCB.
Insert the 40 pin header into the PCB with the short pins extending from the component side, through the PCB so that the plastic base sits on top of the component side of the PCB with its longer pins pointing up above the component side. It does not matter which way round this is inserted. Solder the short pins to the PCB.
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Identify pin 1 on the ADS1115 module. This is indicated with the letter 'V' on the PCB.
Identify pin 1 on the ADS1115 module. This is indicated with the letter 'V' on the PCB.
[[File:Zynaptik_kit_child_boards.png|300px|right]]
[[File:Zynaptik_kit_child_boards.png|300px|right]]
[[File:Zynthian_webconf_wiring_zynaptik_config.png|600px|right]]
[[File:Zynthian_webconf_wiring_zynaptik_config.png|600px|right]]
First, you should choose the right configuration for your zynaptik module depending on the extra modules you have soldered on it:
First, you should choose the right configuration for your zynaptik module depending on the extra modules you have soldered on it:
After saving, you may want to configure your switches and/or analog inputs.
After saving, you may want to configure your switches and/or analog inputs.
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=== Configuring Zynaptik Customizable Switches ===
=== Configuring Zynaptik Customizable Switches ===
Simply add the switches pins to the list. Zynaptik MCP23017 pins start at 200. You don't need to add all the 16 available switches. If you only want to use 2, simply add "200,201".
[[File:Zynthian_webconf_wiring_01.png|600px|right]]
Simply add the extra desired pins to the list (Switches Pins). Zynaptik's digital pins start at 200.
You don't need to add all the 16 available switches:
* If you only want to use 2, simply add "'''200,201'''"
* If you want to use 8, add "'''200,201,202,203,204,205,206,207'''"
After saving, the extra custom switches will be available for configuration.
After saving, the extra custom switches will be available for configuration.