Hello @lessmann, the limit of how many devices can be connected to one RS485 line comes from the RS485 transceiver (the chip on the RS485 output) and on our PLCs it is 32. But be aware, that this is just a theoretical limit and the real limit depends on the current situation. Second limit of the RS485 is the speed of the communication. Since RS485 is a half-duplex type of communication (master can speak only to one slave at a time), the more devices you have the lower speed of updates you will have. If you have PLC with more RS485 ports, you can split the extensions into groups. Best regards, Martin

Hello @mike, I am currently working on a very similar project - monitoring of a groundwater level and a independently controlled water pumps. There will be a web interface with information about exact water level in cm (up to 5m) with charted historical values and when the set threshold level will be exceeded an email and SMS will be sent to a set of addresses. All of that accesible via web interface. If you are interested, please contact me on martin@modori.cz. We can continue in Czech language there. Have a nice day, Martin

Hello, I expect that by console, you mean SSH. You need to enable the SSH in order to use putty (via SSH) the raspbian way: https://www.raspberrypi.org/documentation/remote-access/ssh/ check option 3

@sennevds My notes: reading of inputs: works reasonably well right now. I did create my own implementation (based on golang) that basically just polls the states of the switches continuously and pushes out any change as an MQTT event -- processed directly by home assistant. The polling implementation works on the background and eats about 5-10% CPU (still tolerable, might still be improved), switch behavior feels instantaneous for me. writing outputs: my implementation is also able to again translate incoming MQTT events into toggle outputs. Here, you don't need to poll directly (the MQTT handler itself is able to deal with that). Alternatively, you could look into home assistant modbus, to send a modbus command directly from home assistant. My implementation completely sidesteps the whole modbus translation phase, so if you'd be using it for reading, writing would make sense as well. pushing out DALI commands: I did receive my axons S605 not that long ago, been fiddling with it, see https://forum.unipi.technology/topic/966/dali-interface-integration-in-python-dali . I have the feeling support for this product is still in its infancy, as well as the python-dali library it depends on. If I would have some more low-level documentation on it, I would very much like to take the development on this to a higher level! If you'd like more input on how to use the unipitt binaries, and you feel a bit tech-savvy yourself, I'd be happy to help you set it up. That way, I can improve the project to make it more robust a portable for other interested users.

Hi Steven, thanks for sharing us your experience with UniPi and kudos on the EVOK-MQTT bridge! We definitely want to support some ready-to-use opensource home automation SW and Home Assistant is one of the candidates (alongside the openHAB). But we have no definite plans yet... Martin

@martin-kudláček said in Another home automation project: our din rail mounted relay - and connect it to DO or RO. Awkward, but it works. In most of my projects i use external relays to extend the life of embedded hardware relays, so it's not that awkward. I use mostly relays with coil voltage 230 V AC with UniPi 1.1 but now with the shared COM port and neuron power suply, i'll go with coil voltage 24 V DC.

@tomas_hora Hi Tomas, It is already, this is the test version: Dr.OnOff Have a nice day! Boris

Hey, some one get solution for digital inputs nad one wire? Relays works nice. Im realy dont mnie how config that in script.

Hello @M-Musel, I think this is not possible. Digital inputs are connected directly to the GPIOs of RPi's processor. You might be able to control only Relays/Ai and 1Wire but the rest will not work - I am also not sure if there are any I2C devices in the Pi-Top so you would have to make sure the addresses would not colide with I2C devices on UniPi. You also cannot connect two UniPis together via the I2C

Sure there is a solution for each industrial. We hope this is a challenging work to bring the automation in this industry.

There are multiple solutions, see the list at wiki.unipi.technology Basically it depends if you want to use a free opensource solution (pidome,pimatic,…) or a completely different approach with proffesional solutions (Mervis) Both solutions are possible. But remember there are only 12digital inputs (14 if you make a custom cable). But eg with mervis you can hook multiple unipis together. Blinds are the same as lights, so yes. Depends on what AC you have, most of them has infrared remo tecontrol which should be used....

hi all, yesterday i received the order (Thank you unipi) here is a background on my project: i am trying to setup a greenhouse to automate most of it using Unipi and jeedom. (i understand that jeedom already supported by a plugin) the greenhouse will have the following hardware: 2 X 340v exhaust fans 2x 240v 2000w water pumps 1x rollup side motor (to open the side for the ventilation) 8x light bulbs (only turned on during maintenance at night) The hardware i have is: raspberry pi 2 unipi boards unipi ssr unipi 1-wire hub uni pi 0-10v addon there is other components like weather station (outside and inside), some other sensors but i will add them after the basic setup is performed. my problem is wiring not the software as i have almost no experience with relays. any help will be great please.

Hello, the DIs are max 24V DC only! Anything else will damage your UniPi. So you would need eg a external relay that will be switched by the 230V and will switch the 12/24V DC which will go to the digital input.

Hello, I have made a mistake when committing the last update. The problem was that the custom.cext file was missing… Try to download the last master branch, it should be fixed. Regards, Tomas

Hello David, you are correct. That's what I meant. Plus, as you said, you would need the 24V to go from the power supply to the relays of UniPi and to the button so you could switch the Teleruptors (which switch on the light) by the UniPi and by the button. Simple wiring diagram: 24V -> Button -> UniPi Digital Input + Teleruptor –> so the light switches every time you press the button plus UniPi knows that you switched it manually 24V -> UniPi Relay -> Teleruptors [attachment=0:1btsrd7c]20150209_120857_.jpg[/attachment:1btsrd7c] But you would have to deal with the digital input event after you turn on the relay on UniPi. Hope it helps. Best regards, Tomas