Matrix orbital Scoodo eve shield User manual

Scoodo EVE Shield

Hardware Manual

Revision 1.0

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1Scoodo EVE Shield

Revision History

Revision

Date

Description

Author

1.0

January 14, 2019

Initial Release

Divino

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Scoodo EVE Shield 2

Contents

Revision History..............................................................................................................................................................................1

Contents .........................................................................................................................................................................................2

1 Introduction.................................................................................................................................................................................3

2 Scoodo EVE Shield .......................................................................................................................................................................3

2.1 Overview...........................................................................................................................................................................3

3 Scoodo EVE Shield Headers .........................................................................................................................................................4

3.1 SPI Communication and Power Header............................................................................................................................4

4 Scoodo EVE Shield Peripherals and Features...............................................................................................................................5

4.1 Keys...................................................................................................................................................................................5

4.2 Micro SD Card Slot............................................................................................................................................................5

5 Shield Pinout................................................................................................................................................................................5

5.1 Pinout ...............................................................................................................................................................................5

5.2 Power specifications.........................................................................................................................................................5

6 Board Compatibility.....................................................................................................................................................................5

7 Appendix......................................................................................................................................................................................6

7.1 Environmental ..................................................................................................................................................................6

7.2 Electrical Characteristics...................................................................................................................................................6

8 Scoodo EVE Shield Design ...........................................................................................................................................................7

8.1 Scoodo EVE Shield PCB model..........................................................................................................................................7

8.2 Scoodo EVE Shield Schematic...........................................................................................................................................8

8.3 Scoodo EVE Shield Audio Driver .......................................................................................................................................9

8.4 Scoodo EVE Shield Power circuit ....................................................................................................................................10

9 Contact ......................................................................................................................................................................................10

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3Scoodo EVE Shield

1Introduction

The Matrix Orbital Scoodo EVE Shield is designed to reduce development time by simplifying the process of

mating an EVE series display with common microcontrollers. Built to stack on top of an Arduino Uno R3 or similar,

the Matrix Orbital Scoodo EVE Shield does not disrupt the Arduino Uno’s functionality, and all unused pins remain

accessible for interfacing.

This Kit includes:

-Scoodo EVE Shield

-EVE2 FFC-20P ribbon cable

2Scoodo EVE Shield

2.1 Overview

The Scoodo EVE Shield is populated with an SD card holder, allowing image, video, and audio files to be stored for

the EVE controller to access during operation. An on board audio amplifier and speaker are provided, enabling

audio playback from the EVE. Three buttons are also provided, offering physical user controls. SPI level shifters

ensure that the 5V signals generated by the microcontroller won’t damage the 3.3V EVE.

Figure 1: Scoodo EVE Shield Block Diagram

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Scoodo EVE Shield 4

3Scoodo EVE Shield Headers

Figure 2: Scoodo EVE Shield Header Locations

Table 1: List of available Headers

Header

Standard Mate

SPI Communication and Power

FFC-20P*

*Note: The FFC-20P cable is included with the Scoodo EVE Shield.

3.1 SPI Communication and Power Header

The 20 pin FFC header on the Scoodo EVE Shield is used to interface with an SPI device, such as an EVE2 Display

Module. This FFC header will mate with any 20 pin FFC cable with a 0.5mm pitch and bottom contacts, such as the

Wurth Electronics INC 687620050002 series ribbon cable.

Figure 3:SPI Communication and Power Header

Table 2 SPI Communication and Power Header Pinout

Symbol

Type

Function

Vout

Power

Logic Voltage (3.3V)

GND

Ground

Ground Connection

SCK

Input

SPI clock input

MISO

Input/output

SPI MISO output

MOSI

Input/output

SPI MOSI input

Input

SPI slave select input

INT

Level shifted pass-through

Interrupt to host

RST

FT81x Reset pin

No connection

AUDIO

Output

Audio PWM out

IO2

Input/output

General purpose IO 0

IO3

Input/output

General purpose IO 1

GPIO2

Input/output

General purpose IO 2

GPIO3

Input/output

General purpose IO 3

GND

Ground

Ground connection

Vout

Power

Logic Voltage (3.3V)

No connection

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5Scoodo EVE Shield

4Scoodo EVE Shield Peripherals and Features

4.1 Keys

Three momentary push buttons are available on the Scoodo EVE Shield, and connect directly to the

microcontroller’s Digital Pins 5, 6 and 7.

4.2 Micro SD Card Slot

A micro SD card slot is available on the Scoodo EVE Shield, providing the option to store asset files to be accessed

later, during operation. The Scoodo EVE Shield is compatible with SD and SDHC type microSD cards.

5Shield Pinout

5.1 Pinout

Figure 4: Scoodo EVE Shield Pinout

Table 3: Scoodo EVE Shield Pin Assignment

Function

GND

PD7

Key 3

PD1

Audio PD

PB1

EVE CS

PD2

EVE Int

PB2

EVE PD

PD3

SD CS

PB3

MOSI

PD4

SD CD

PB4

MISO

PD5

Key 1

PB5

SCK

PD6

Key 2

The Scoodo EVE Shield makes use of 13 of the microcontroller’s pins. 6 pins are required to communicate with the

EVE display directly, and another 7 pins are used to interact with the additional peripherals available on the board.

5.2 Power specifications

The Scoodo EVE Shield operates off of the 7 - 12V provided by the microcontroller’s Vin pin. A 7 - 12V power

supply may need to be connected to the controller board in order for sufficient power to be supplied to the

Scoodo and to the attached EVE display. When choosing an adaptor, please ensure it uses a centre positive 2.1mm

plug and conforms to the voltage and current requirements of the controller board. A 1 amp power supply is

suggested as some EVE backlights require a significant amount of current.

6Board Compatibility

The Scoodo EVE Shield is compatible with the current EVE2 line up offered by Matrix Orbital. The Shield will also

fit any microcontroller that shares a similar form factor and pin out as the Arduino Uno. Please check your

microcontroller’s pin out to ensure compatibility with the Scoodo EVE Shield. If you have any questions, you can

Contact support..

The Scoodo EVE Shield has been tested with the following:

-Arduino Uno

-Parallax Propeller

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Scoodo EVE Shield 6

7Appendix

7.1 Environmental

Table 4:Scoodo Limiting Values

Operating Temperature

-20 to +70 °C

Storage Temperature

-30 to +80 °C

7.2 Electrical Characteristics

Table 5: Electrical Specifications

Parameter

Min

Max

Unit

Supply Voltage

SPI Pins

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7Scoodo EVE Shield

8Scoodo EVE Shield Design

8.1 Scoodo EVE Shield PCB model

Figure 5: Scoodo EVE Shield PCB

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