You can select the EMO-R8 module to expand the Unipi 1.1 board with another 8 relays. This module communicates via I2C, as does the relay on the Unipi 1.1 board. Documentation for this module can be found on our KnowledgeBase.
For communication, you can choose either direct control via I2C, or use our EVOK API, which allows you to control, for example, via the REST API or WebSocket.
EMO-R8 connection and EVOK configuration:
You must first set the address jumpers on the EMO-R8 and connect to Unipi 1.1 using an I2C cable. Then connect the power supplies, connect to the Unipi unit via SSH and edit the /etc/evoc.conf file. Then restart EVOK and the outputs on the EMO-R8 will be available.
In the /etc/evok.conf file, find the lines related to EMO-R8 and uncomment them (remove the semicolons at the beginning of the lines). Open file with administrator privileges (sudo).
sudo mc -e /etc/evok.conf
Then restart EVOK.
sudo systemctl restart evok.service