Other Peripherals

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  UniPi 1.1 Lite and 1-wire bus connection?
  unipi 1-wire connector lite rj45 • • viestivelho  

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  Hello @viestivelho, 1Wire has only one data pin from its design, and that is pin 7 on the master = the UniPi. Besides that we use another wire, pin 6, to serialize the bus as much as possible to maximize the reliability. That pin is wired only in the temperature sensors and HUBs which we provide.
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  zigbee integration
  • arolli  

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  @arolli One of our customers already did that but I cannot find it...
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  Humidity Sensors and UniPi 8 Port Hub
  • nigel.skates  

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  @nigel-skates since all are 1wire senosrs, then yes :) any of these sensors work except you have to make your own cable with the RJ45 connector in order to be used in the hub https://www.unipi.technology/digital-1-wire-c3
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  1-Wire UTP cable color mapping
  • arolli  

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  Hi Martin, in my 1wire bus I've 3 HUB and several sensons. Everything is working fine. Only problem appear when on the last port on my last hub I connected a rj45 splitter ( https://www.unipi.technology/1wire-hub-2-port-p50 ). After a while I connect the thermometer to this hub it disconnect. (it appears red in mervis) All RJ45 port are cabled whit pinout TIA-568B and thermometer are cabled as follow: +VCC: blu + blu/white GND: brown + green/white 1W : green + brown/white. Do I need to use the same schema of connection on the thermometer atteched to 2 port splitter? let me know if you have suggestion how to troubleshoot the problem. Thanks Antonio
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  HDO signal (remote controll for lower electricity rate)
  • Meethos  

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  Dear @meethos, all you need is an external relay with 230V capable coil - the HDO (DSM in English according to the wiki) is a 230V AC signal. The relay will then switch +24V DC from your power supply which will go to a DI of Neuron. An alternative way is to use a smart energy meter like this one: https://www.unipi.technology/smart-energy-meter-pro380-modbus-p40?categoryId=16 right behind the main switch and also connect the HDO signal to it. Then you will read all the information which the energymeter provides (like the current voltages, frequencies and total power on all three phases including the HDO status)
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  Prepaeing Sedtronic sensor to use
  • sidoor  

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  Hello @Martin-Kudláček, Thanks for quick answer!
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  Humidity sensor for unipi that can work with evok or owfs ?
  • BlackSoll  

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  @blacksoll Those products are only temperature sensors. If you are looking for humidity sensor, take a look at our offer of the Sedtronic products: https://www.unipi.technology/sedtronic-1-wire-sensor-p67?categoryId=3 Martin
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  Z-wave module
  • wszadkow  

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  @abornand Hi ! I use aeotec z-stick with unipi and pimatic. The pimatic plugin works with neuron too. No problems so far. I control around 11 devices. Althought pimatic is at beta stage, works now for my home automation over a year.
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  Connect a screen to Unipi Axon
  • Jonathan Prieto Abasolo  

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  Hi Jonathan, do you have some touch screen from previous installation, or do you plan to purchase a new one? Generally speaking, the touch screens in industrial automation are equipped with PC (Pro-face for example) running custom HMI software, which communicates with PLC e.g. via Modbus. In this case, you can use Axon with no problem.
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  Bulid Your Own Leakage Detector?
  • knebb  

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  @tomas_hora It really depends on the actual application. I needed to measure 50mm difference in water level in tight space (approx. 30mm x 30mm). So for me, mechanical solution was a no-go, since there are no such small sensors. But for @knebb's purpose, some set of float switches (at the bottom, 1/4, 1/2, 3/4 and at the top) could be easy and affordable solution. I would connect them to a resistor ladder and 10V power supply thus converting the 5 states into evenly spreaded 0-10V which can be directly measured by UniPi's AI input. This could be better than occupying 5 DI inputs, if the number of DI's is also an issue.
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  Which DATA LINE? Using Six 1wire temp sensor with unipi hub and Raspberry Pi (GPIO 4)
  • Ditistie  

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  Hi Evert! We only provide official support for using the 1Wire Hub with standard-compliant 1Wire masters. While it may be possible to turn the RPi into one, our Neurons use a dedicated 1Wire master PCB, which in particular is powered via a discrete 24V-in/2-3.3-5-12-24 out PSU. In principle what you are asking to do may be possible, but unfortunately we cannot provide any guarantees or instructions. Perhaps some of our other users here on the forum might be able to help.
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  Opentherm - modbus gateway
  • FerryvanY  

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  Little update: We had still some work to do on our heatingplant, we had some flow issues to fix to let the boiler do a good job. After we did this, we noticed that the boiler keeps burning on low flame. Even if the setpoint was high, the boiler stays at low flame. We found out that we need to write a value at this register as well: 14 maximum relative modulation level setting By default all values are 0, even this one. When you give customers some advice about controlling their boiler with unipi, you should tell them this: ;) When a boiler needs to be controlled at setpoint: write modulating supply setpoint at register 1 write fixed setpoint of maximum load of the boiler on register 14 (100%) When a boiler needs to be controlled at cappacity: write fixed supply setpoint at register 1 (90°) Write modulating value of requested load setpoint on register 14
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  USV für Unipi
  • devien  

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  Mervis & Stepper motor
  • Havor  

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  @Havor I do not have any experience with Stepper motors connected via Modbus so I cannot tell... But implementing any TCP or RS485 Modbus device is pretty straight forward in Mervis. You just need to map the registers you wish to read from/write to the Modbus device...
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  Opentherm Gateway
  • Pieter Blommaert  

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  Hello @Pieter-Blommaert see my replies below: what is the best way to detect that the boiler and the thermostat are online you could use the statistical registers, eg. 2004 and 2006 (or 2104, 2106) does it make sense to switch the gateway between monitor and active mode (e.g. in normal condition, i rely on the thermostat, but in case the regular scedule needs to be overruled, i switch to active mode (with the thermostat still connected) of course, it is only about the coil configuration of the coil whether the gateway is repeating the communication to the boiler from thermostat or no... Experience in steering opentherm boilers, do's and dont's... cannot tell much here, but definitely all pros! :) Neuron/Neuron software has a higher level interface where i could integrate simply and just set measured and expected temperatures? (Can always consider to switch to Neuron, after all including heating control is a rather advanced actually all you need is to set the boiler on or off and set the expected setpoint. The logic of those has to be done in your application. In Mervis there are function block like equithermal curve and time scheduler to help you write your own "thermostat"
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  Connect DHT22 to UniPi
  • naibaF  

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  Hi Thomas, We have now january, is there support for Evok and the 1-Wire sensors? Thanks and best regards Fabian
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  Bigger relais board
  • Havor  

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  @Havor Is 56 relays + 4DO enough? https://www.unipi.technology/products/unipi-neuron-l403-40?categoryId=2&categorySlug=unipi-neuron
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  RS485 relay module
  • SorakCz  

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  Hello, well there are many on the market (e.g. from Domat or Amit on the Czech market) and we are finalizing production of our own RS485(Modbus) for Neuron which will be available by the end of this year.
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  Air
  • Havor  

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  If you find a air pressure sensors with 0-10V output enough precise for your needs than yes, but I cannot recommend you any
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  Flow meter
  • egyedmobila.hu  

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  How did you get this flow meter to work with unipi