Unipi 1.1 & 1.1 Lite

Unipi 1.1 is an extension board for Raspberry Pi. The board etends the Raspberry Pi by innputs and outputs to interac with other devices to function as a programmable logic controller (PLC) in a variety of automation applications.

Features

  • 8x Finder 36.11.9.005.4011 changeover relays
  • 12x galvanically isolated digital inputs
  • 2x 0-10 V⎓ analog inputs
  • 1x 0-10 V⎓ analog output
  • 1 × 1-Wire port for connection to 1-Wire thermometers and other sensors
  • 1 × I²C port for expansion
  • 1 × UART port for external serial communications
  • socket for RTC (real-time clock) battery

Detailed parameters of inputs and outputs can be found here.

Unipi 1.1 Lite is a smaller and simpler variant of the Unipi 1.1, designed for smallest automation projects. When compared to the Unipi 1.1, it features fewer I/O's but is more compact and cheaper.

Features

  • 6x Omron G5Q-14-EU changeover relays
  • 6x galvanically isolated digital inputs
  • 1 × 1-Wire port for connection to 1-Wire thermometers and other sensors
  • short circuit LED indication

Detailed parameters of inputs and outputs can be found here.

Unipi 1.1 use Raspberry Pi computer as their computing module. Unipi 1.1 and Unipi 1.1 Lite board are compatible with the following Raspberry Pi models:

  • Raspberry Pi 2 Model B
  • Raspberry Pi 3 Model B
  • Raspberry Pi 3 Model B+
  • Raspberry Pi 4 Model B (all RAM variants)

Raspberry Pi can be purchased either separately, or as a part of one of the practical sets available on our e-shop.

The Raspberry Pi is connected via its GPIO through a ribbon cable, processes all data from I/O modules and is sending responses. All individual I/Os and communication interfaces are connected to the Raspberry Pi's CPU either directly via GPIO or indirectly via I²C. Raspberry Pi also provides network connectivity and USB ports.

The I²C port supports connection of extension modules, such as the EMO-R8 relay extension.

The 1-Wire bus is used for passive reading of data from corresponding 1-Wire sensors (humidity sensors, temperature sensors etc.). One bus can receive data from up to 15 sensors with a maximum total length of the bus up to 200 meters (provided a suitable 1-Wire hub is used).

Note: Unipi 1.1 and 1.1 Lite require an external 5 V⎓ / 2.4 A power source with 2.1mm DC jack.

For Raspberry Pi 4 it is advisable to increase the (no-load) voltage of the power supply to 5.3 - 5.4 V⎓ and the total USB output is limited to 400 mA. However, after disconnecting jumper JP1, it is possible to connect a separate power supply for Unipi 1.1 (not Lite) and for Raspberry Pi 4 to achieve full performance.