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====== EV-GEAR-EINK1Z User Guide ======
====Introduction====
EV-GEAR-EINK1Z is a “Gear” (expansion add-on board) for MCU Cogs (EV-COG-AD3029LZ & EV-COG-AD4050LZ). The Gear is used to enable interfacing with EINK Electronic Paper Display (EPD). This gear can be used for quick prototyping and deployment of COG+EPD solutions.

The EV-GEAR-EINK1Z supports these displays
  * EL029TR1 (2.9`` ePaper Display) \\
  * ED057TC6 (5.65`` ePaper display) \\

====Features==== 
  * 24 pin connector for connecting EPD
  * LED to indicate when EPD is powered on
  * emperature and Humidity Sensor SHT31 is present
  * 2.5V LDO powers the EPD interface
  * Provision to power the system through CR2450 coin cell

====Hardware Details====
===Primary side===
{{:resources:eval:user-guides:ev-gear-eink1ztop.jpg?700|}}
===Secondary side===
{{:resources:eval:user-guides:eink_gear_bottom.png?700|}}
===Block Diagram===
{{:resources:eval:user-guides:epd_block_diagram_2.png?700|}}
====Connecting to MCU Cog====
===Connecting EPD to EV-GEAR-EINK1Z===
Step. 1: Unlock the EPD connector \\
{{:resources:eval:user-guides:epd_unlock.jpg?400|}} \\
Step. 2: Insert the display into to EPD connector \\
{{:resources:eval:user-guides:epd_conn_display.jpg?400|}} \\
Step. 3: Lock the EPD connector \\
{{:resources:eval:user-guides:epd_lock.jpg?400|}} \\

===Connecting EV-GEAR-EINK to MCU-COG===
The EV-GEAR-EINK1Z can be powered only if connected to a MCU-COG. Connect the gear to the MCU-Cog as shown in the picture

COG Connectors C1 and C2 are used to interface EV-GEAR-EINK1Z with MCU COG. C1 and C2 connectors carry all the pins necessary to interface EPD with MCU COG. The pinout details of C1 and C2 can be found in [[resources:eval:user-guides:eval-cog-ad3029lz:cog_hw_userguide|EV-COG-AD3029LZ MCU Cog]]

{{:resources:eval:user-guides:eink_gear_1.jpg?600|}}

Place the COG on the EINK-Gear such that COG connectors (C1 and C2) on COG and EINK-Gear connect to each other.

{{:resources:eval:user-guides:eink_cog_4.png?600|}}

\\
====Power options====
There are 3 options to power the COG+EPD setup. The option can be selected using the power-switch on MCU-Cog.
<Image>

{{:resources:eval:user-guides:power_table_1.png?600|}}

\\
====Test points====
For quick debugging, following test points are provided.
  * TP1 : SPI0_MOSI
  * TP2 : SPI0_CLK
  * TP3 : SPI0_MOSI
  * TP4 : SPI0_CS0
  * TP5 : SYS_WAKE3
  * TP6 : GPIO41

\\


===== EV-GEAR-EINK1Z Design and Integration Files =====

<WRAP center round download 60%>
{{:resources:eval:user-guides:ev-gear-eink1z_schematics.pdf |EV-GEAR-EINK Schematics}}\\

{{:resources:eval:user-guides:ev-gear-eink1z_-_fab.zip|EV-GEAR-EINK1Z Layout and BOM}}\\

{{:resources:eval:user-guides:ev-gear-eink1z_-_assembly_files.zip|EV-GEAR-EINK1Z assembly}}
</WRAP>


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