====== Unipi 1.1 & 1.1 Lite ======
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===== Unipi 1.1 =====

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

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==== 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 [[en:hw:03-unipi11:description-of-io|can be found here]].
===== Unipi 1.1 Lite =====
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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 [[en:hw:03-unipi11:description-of-io|can be found here]].

===== Overview =====

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 [[https://www.unipi.technology/raspberry-pi-c38|separately]], or as a part of one of the practical sets available on [[https://www.unipi.technology/unipi-1-1-c7|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.
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The **I²C port** supports connection of extension modules, such as the [[https://www.unipi.technology/unipi-1-1-c7|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 [[https://www.unipi.technology/cs/senzory-c11|1-Wire hub]] is used).

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**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.
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===== Further info =====
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  * [[https://www.unipi.technology/unipi-1-1-c7|Unipi 1.1 & 1.1 Lite on Unipi e-shop]]
  * [[en:sw:01-mervis:running-on-unipi11-hidden|]]
  * [[en:sw:01-mervis:creating-new-project-on-unipi11-hidden|]]
  * [[en:files:products:03-unipi_1|Documentation for Unipi 1.1 & 1.1 Lite]]
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  * [[en:hw:03-unipi11:description-of-io|]]
  * [[en:hw:03-unipi11:download-image|]]
  * [[en:hw:03-unipi11:image|]]
  * [[en:hw:03-unipi11:portmap|]]
  * [[en:hw:03-unipi11:suitable-sd-card|]]
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