Third board to connect to the expansion board - Analog Input Board

Technical Specs :

• Input Volatge : 3V3 or 5V.
• Analog inputs : 16.
• Interface with the Arduino : MCP3008 (SPI Bus).
• Lenght : 68.58 mm.
• Widht :  62.23 mm. 

 Schema

Simulation 

 

 

Prototype

Design and printing a box for the expansion board with Mega

With the diferents parts of the box we have the posibility the change one for adapt to another Arduino (Mega or Due), remove the display and encoder, remove the ethernet shield, change the system of installation (rail DIN),...

Design

Parts of design

Printed parts

 

final assembly

assembly expansion board with Arduino Mega

    Before connect the inputs/outputs boards configure :

      - SPI address of each board.

      - Operating Voltage (3,3V or 5V)

    Before connect the expansion bridge Mega configure :

      - Operating Voltage (3,3V or 5V)

 Simulation

 

 Prototype

 

How to connect the Arduino Mega/Due with the expansion board : The Expansion bridge MEGA.

The expansion bridge is an Arduino Shield that connect the Arduino MEGA or DUE with the expansion board.

 Simulation

 Technical specifications

 - Independent +5V for the expansion board.
 - Independent +3V3 for the expansion board.
 - Real time clock DS1307.
 - Connection with LCD (Nokia 5110).
 - Connection with Encoder.
 - Connection with ESP8266.
 - Level converter to adapt the voltage in case of use Arduino Due (+3V3).

  Schema

Prototype

Second board to connect to the expansion board - Output Board

  Second board to connect to the expansion board - Output Board

Technical Specs :

• Input Volatge : 3V3 or 5V.
• Relay Outputs : 6.
• Interface with the Arduino : MCP23S17 (SPI Bus).
• TTL to switch the outputs : ULN2803ADW.
• Lenght : 68.58 mm.
• Widht :  62.23 mm.

Schema

Simulation

 

Prototype

printing the box parts of expasion boards

 BCN 3D+ working

 printed parts

mounted assembly

box for the expansion board

 

Designing a box for the expansion board that can be created by a 3D printer.

The result of design is a kit of seven parts.

assembly of the expansion board with inputs cards

    Before connect the inputs boards configure :

      - SPI address of each board.

      - Operating Voltage (3,3V or 5V)

    Before connect the expansion bridge configure :

      - Operating Voltage (3,3V or 5V)

simulation

expansion board mount

The first board to connect to the expansion board - Input Board

Technical Specs :

• Input Volatge : 3V3 or 5V.
• Digital Input : 16.
• All entries remain logic high level with the 10K ohms pull-up resistor. When shorting the input terminals (protected with a diode in series) the logic level change to low.
• Interface with the Arduino : MCP23S17 (SPI Bus).
• Programable interrupts : 2.
• Lenght : 68.58 mm.
• Widht :  62.23 mm.

Schema

Simulation

Prototype

Connect Arduino UNO + expansion bridge + expansion board

( Beta version )

First prototype

How to connect the Arduino Uno with the expansion board : The Expansion bridge.

The expansion bridge is an Arduino Shield that connect the Arduino UNO with the expansion board.

 

Simulation

 Technical specifications

 - Independent +5V for the expansion board.
 - Independent +3V3 for the expansion board.
 - Real time clock DS1307.
 - Level converter to adapt the voltage in case of use Arduino Zero (+3V3).

Schema

What is expansion board for Arduino ?

expansion board for Arduino is an interface rack that you can connect four inputs/outputs boards.

Dimensions : 119.38 x 68.58 mm.

 Simulation

 
Description pins from Arduino Uno :

Schema