Hi Gabriel,

You can find most of the information in the articles on inputs and outputs in the products section on our KnowledgeBase.

Below you will find the answers to your questions:

What are the use cases of these relays? Is it dangerous to use these common relays with outputs having different power supplies?

• It depends on the specific circuit connection, but in most cases such a connection is undesirable.

Finally, is it recommended for safety reason to use a different power source between the unipi power supply and the dry contact equipment (in input) ?

• Yes

Hello everybody,

we have good news!
All packages from the Unipi repository already have their version for Bullseye (Debian 11).

Unfortunately it took a little longer as it was not as easy as it first seemed, but now our packages can be used on all Unipi controllers with Debian 11.

We are now working on Bullseye OS images that we will release in the coming months. OS images will not be released immediately because we are working on a new unified approach to information about the controller and its peripherals.

For Unipi Neuron and Unipi 1.1 it is now possible to use the RaspberryPi OS image.

Best regards,
Antonin

Hello PEPITO82,

The RPi CM4 is currently not an officially supported platform. However, according to my information, should be mostly compatible with "standard" RPi.

One option may be to use the RaspberryPi OS image and install the necessary components: EVOK, Node-RED.

If you also want so-called Unipi nodes for communication with inputs and outputs, which are available in our Node-RED OS image, just add a suitable module from the palette to Node-RED.

Best regards,
Antonin

Dobrý den @ondbyr2561 ,

příklad naleznete na snímku níže:

Přeji hezký den,
Antonín z Unipi

Hi everyone,

In these cases, this guide can help: https://kb.unipi.technology/en:sw:01-mervis:automatic-restart-of-1-wire-hidden

Unfortunately, if you have improperly processed cabling, or if you have a large number of sensors connected to this bus, you cannot achieve the desired stability, because the 1-Wire bus is very sensitive to interference.

In this case, I recommend checking the wiring to make sure you have all unused wires and the cable shield connected to the ground terminal. Next, check the length of the bus and the number of sensors on the bus.

An alternative to this connection is also the connection of sensors via Extension xG18, which has 8 separate 1W channels, each reserved for one sensor. Perhaps the only disadvantage of this module is that it is possible to connect only sensors DS18b20 and supporting parasitic power.

Finally, I also recommend reading this article about 1-Wire: https://kb.unipi.technology/en:automation:02-glossary:1wire-hidden

Best regards,
Antonin, Unipi

Hi everyone,

Currently this is possible by flashing Mervis OS and then installing Node-RED following the standard installation instructions: https://nodered.org/docs/getting-started/raspberrypi

However, this solution is not tested and we cannot guarantee that the Mervis RT will behave correctly if other such demanding SW is running on the controller.

Best regards,
Antonin, Unipi

Hi @Vesa-Kauppinen,

try apt update && apt upgrade again.
We made some adjustments due to the new Unipi Iris HW, but this should work fine now.

Best regards,
Antonin, Unipi

Hi @lukec,

You can try the current Node-RED image, which is available at this link: https://kb.unipi.technology/en:hw:007-patron:download-image:02-nodered

Best regards,
Antonin, Unipi

Hi @Brzezinol,

you can try using nginx + LetsEncrypt for this.

Best regards,
Antonin, Unipi

Hi @JakubSzlaur

The documentation is really old, but this command looks functional. As recently as last year, someone used it for an update (link to the Node-RED forum), but I didn't test it.

We will also soon release a new Node-RED OS with the current Node-RED v3. Which is also a certain possibility to update.

Best regards,
Antonin, Unipi

Hi @ArnieX,

Thank you for your post.
This is a typical error when setting up communication with INEPRO/KLEFR electricity meters, and it is really necessary to be careful when setting up other devices (modbus tables).

Best regards,
Antonin, Unipi

Hi @knebb,

Thanks for this post, it's very helpful.

Best regards,
Antonin, Unipi