Changes

'''+ 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 honor is deserved to the brave who kill this dragon ...

It's currently unimplemented. The highest honour is deserved to the brave who kill this dragon ...

[https://shop.zynthian.org/shop/product/zynaptik-expander-kit-379 Buy Zynaptik Expander Kit]

[https://shop.zynthian.org/shop/product/zynaptik-expander-kit-379 Buy Zynaptik Expander Kit]

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=== Installing Zynaptik Expander Kit ===

=== Installing Zynaptik Expander Kit ===

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.

[[File:Zynaptik_kit_insert_header.png]]

[[File:Zynaptik_kit_insert_header.png|300px|right]]

Ensure the header is pushed against the ADS1115 module then solder the 10 pins. It may be easiest to locate the module tightly against the header by soldering one pin first then reflowing the solder (reapply the iron) and relocating the module into position then soldering the remaining pins. Be careful to avoid prolonged (approx. 2s) heat applied to each pin.

Ensure the header is pushed against the ADS1115 module then solder the 10 pins. It may be easiest to locate the module tightly against the header by soldering one pin first then reflowing the solder (reapply the iron) and relocating the module into position then soldering the remaining pins. Be careful to avoid prolonged (approx. 2s) heat applied to each pin.

Use a small side cutter to cut each of the 10 pins flush with the top of the solder joint. Make the pins as short as you can without reducing mechanical integrity, approx. 2mm.

Use a small side cutter to cut each of the 10 pins flush with the top of the solder joint. Make the pins as short as you can without reducing mechanical integrity, approx. 2mm.

[[File:Zynaptik_kit_cut_pins.png]]

[[File:Zynaptik_kit_cut_pins.png|300px|right]]

Repeat for the MCP4728 module. You should now have two modules with 90 degree header pins on their edge.

Repeat for the MCP4728 module. You should now have two modules with 90 degree header pins on their edge.

If your Zynaptik board is installed in your Zynthian, remove all the cables from the Zynaptik board then remove the board from the case by removing the four fixing screws.

If your Zynaptik board is installed in your Zynthian, remove all the cables from the Zynaptik board then remove the board from the case by removing the four fixing screws.

It is advised to use a 28-pin IC socket (not supplied) to mount the MCP23017 chip. This will reduce the risk of damage to the chip. Be aware that 28 pin sockets are available in different sizes. The dual-in-line narrow socket is required. You may solder the IC directly to the PCB if preferred. Insert the IC socket or the MCP23017 into the Zynaptik board. The socket should have a notch or indicator at one end. The MCP23017 has a dot near pin 1. This should be oriented towards the edge of the PCB. There is an outline of the IC drawn on the PCB with a notch in one end. This should align with the notch of the socket and the dot of the MCP23017. The component should sit on the same side of the Zynaptik board as the other components like the header pins. [[File:Zynaptik_kit_MCP23017_pin1.png]]

It is advised to use a 28-pin IC socket (not supplied) to mount the MCP23017 chip. This will reduce the risk of damage to the chip. Be aware that 28 pin sockets are available in different sizes. The dual-in-line narrow socket is required. You may solder the IC directly to the PCB if preferred. Insert the IC socket or the MCP23017 into the Zynaptik board. The socket should have a notch or indicator at one end. The MCP23017 has a dot near pin 1. This should be oriented towards the edge of the PCB. There is an outline of the IC drawn on the PCB with a notch in one end. This should align with the notch of the socket and the dot of the MCP23017. The component should sit on the same side of the Zynaptik board as the other components like the header pins.

 

[[File:Zynaptik_kit_MCP23017_pin1.png|300px|right]]

 

Solder the socket or MCP23017 in place. Use the previous tip of soldering one pin first then reflowing to ensure the component is fitted snug against the board. WARNING: If soldering the MCP23017 directly to the PCB be careful to apply heat for a very short period (approx. 2s) to each pin. Integrated circuits are fragile and can be damaged by heat. Tip: The MCP23017 is supplied inserted in a piece of foam. Use this to support the IC socket or MCP23017 whilst soldering.

Solder the socket or MCP23017 in place. Use the previous tip of soldering one pin first then reflowing to ensure the component is fitted snug against the board. WARNING: If soldering the MCP23017 directly to the PCB be careful to apply heat for a very short period (approx. 2s) to each pin. Integrated circuits are fragile and can be damaged by heat. Tip: The MCP23017 is supplied inserted in a piece of foam. Use this to support the IC socket or MCP23017 whilst soldering.

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:MCP4728_pin1.png]].

[[File:MCP4728_pin1.png|300px|right]]

Insert the ADS1115 module into the Zynaptik board from the component side with its pin 1 ('V') inserted into the hole with the square line around it, nearest the label, "MOD-1". Insert the MCP4728 module into the Zynaptik board from the component side with its pin 1 ('V') inserted into the hole with the square line around it, nearest the label,  "MOD-2".

Insert the ADS1115 module into the Zynaptik board from the component side with its pin 1 ('V') inserted into the hole with the square line around it, nearest the label, "MOD-1". Insert the MCP4728 module into the Zynaptik board from the component side with its pin 1 ('V') inserted into the hole with the square line around it, nearest the label,  "MOD-2".

[[File:Zynaptik_kit_child_boards.png]]

[[File:Zynaptik_kit_child_boards.png|300px|right]]

Support the modules with your fingers whilst turning the board over then solder the 10 pins of each board. Be careful to avoid prolonged (approx. 2s) heat applied to each pin.

Support the modules with your fingers whilst turning the board over then solder the 10 pins of each board. Be careful to avoid prolonged (approx. 2s) heat applied to each pin.