RPisPLC Hardware setup

Hardware setup

You must connect at least one portexpander module (with a pca9555) on the Raspberry Pi board!

How to connect the hardware to the Raspberry Pi B+ board.

Picture Hardware Connections

Raspberry Pi Connection

Raspberry Pi B + used sockets.

Picture raspberry Pi Connections used

  1. Ethernet port
  2. SD card slot
  3. Micro usb power supply
  4. Ribbon cable adapter to GNUBLIN Module-Bridge

Ribbon cable adapter to GNUBLIN Module-Bridge

The Raspberry Pi is a 3.3V device
The GPIO pins on the Raspberry Pi are unprotected. So miswiring or an overcharge could damage your RPi!

Picture Ribbon Cable

Or use the GNUBLIN Module-GnuPi
The adapter board is connected directly to the RaspberryPi. On the board there are 5 more connection options for modules. Modules are simply connected via a ribbon cable.


GNUBLIN Module-Bridge

The GNUBLIN modules-bridge enables the GNUBLIN to connect several modules simultaneously.

Picture Gnublin Bridge



GNUBLIN module-ADC provides 8 analog inputs (8-bit resolution). The GNUBLIN modules ADC is used to measure voltages. The modules can be easily connected via the Gnublin connector.

Picture gnublin ADC

1 Ribbon cable connect from GNUBLIN Module-ADC to GNUBLIN Module-Bridge.
3 Using the ADC to read a potentiometer (50K Ohm). The ADC converts an analog voltage into a digital format. The wiper is connected to analog input 1.


Digital 24Volt interface

The I/O interface consists of 8 digital 24V outputs with LED status indicators.

Picture Digital IO 24V 



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