Victron VenusOS | Raspberry Pi | Multiple 1-Wire Temp Sensors (DS18B20) | Install & Configure

[@SuperRamcharger]

Thanks for the video! Just pulled this from the Adafruit website: "The DS18B20 "1-wire" sensors can be connected in parallel - unlike nearly any other sensor sold! All sensors should share the same pins, but you only need one 4.7K resistor for all of them. The resistor is used as a 'pullup' for the data-line, and is required to keep the data transfer stable and happy" Just thought I'd help!

[@tobisreallifeskillswithtobi]

Thanks for the info!

[@mange7724]

That little board has pull up resistor to. Thanks for great explanation. 👍

[@mickeymouse-lu2yk]

Yup - you don’t want to keep adding more in parallel else it draws too much power - so i wonder if the bread board resistor is needed with the little boards and if all sensors should converge on a single little board.

[@mickeymouse-lu2yk]

Thanks for the video - fyi the connection of each wire type on a single breadboard row per wire type (vcc,gnd, data) is a parallel connection not series as stated in the video (likely just a verbal miswording)but thanks to your great wiring video it showed me they are in parallel - which vcc and gnd always are, and its impossible to do a series connection for a single wire device. But was good to see data is also done in parallel between all the sensor’s data in your video. One word of caution: you don’t want to keep adding more resistors in parallel else it draws too much power and hurts your equipment - so I THINK the bread board resistor is NOT needed nor desired if using the little board, and if multiple sensors are desired then they all go to a SINGLE little board and then to the R Pi. Else you end up with many parallel resistors which look like a data to vcc short that neither the R-Pi nor the temp sensors can override to send out a low when serially communicating the configuration and temperature. If not using the little board then you need the resistor.

[@GlenS789]

Found this!!! two sensors on the same gpio! Wow

[@tobisreallifeskillswithtobi]

Thanks for sharing!

[@paulhowes3788]

the pi hut sell a breakout board for the gpio pins. Im gonna try build this system to monitor my fridge temperature and water heater temps in my offgrid motorhome. Thankyou so much for making these videos, ive been wanting to measure temps with our pi

[@katamaranzen]

Whov it was simple, thank you very much. I will use it for monitoring engine temperature in our catamaran.

[@AerospectiveUK]

The board is an adapter module which has the pull up resistor on board. You could buy the wire alone and add the resistor as you have done. With your setup its not needed

[@Slavomir-1977]

Super video. ***** Would it be possible to control the fan speed using PWM based on the temperature of the sensors in Venus OS? I look forward to the next videos. THX

[@tobisreallifeskillswithtobi]

Good question! I need to do some research. I worked on a different solution for fans but still based on control. what size of fan where you thinking? Cooling the equipment or indoor fan?

[@Slavomir-1977]

@@tobisreallifeskillswithtobi It would be additionally cooling MPPT and victron multiplus II based on the achieved temperature of the devices. Certainly it could be done using Arduino. But why not try it directly in Venus OS? It will be a challenge. 😉

[@shaneperkins924]

Good video, I set up with 3 sensors and works well but doesn't display all 3 in Home assistant it only shows 1 of the sensors, not sire why yet?

[@Paul_______]

I followed instruction and it worked perfectly. Only thing I'd like to try is hard wire instead of the breadboard. Can I just wire all the wires together that would be together on the breadboard and include the resistor on vcc and dat?

[@tobisreallifeskillswithtobi]

Yes that should work

[@Paul_______]

@@tobisreallifeskillswithtobi do you also have a video adding a relay to the Raspberry Pi? I'm wanting to install a 24 volt fan that comes on and off with the temperature sensor I just installed

[@Ryan-nd3zh]

Could you do a video on how to use input 1 to confirm generator status? I’m trying to do this right now and I have a knowledge gap. My ac generator also has a 12v dc charging system and my intention is to use this 12v as a signal. I’m at a loss on how to execute this. I’ve watched your videos on installing the relays and setup helper and really appreciated those videos.

[@tobisreallifeskillswithtobi]

Which generator do you have? Brand and model name?

[@ctmodalitychampion9214]

Just curious if you have knowledge of the ruuvi they are Bluetooth, so depending on the application this is a very easy solution

[@Defintothewild]

Hello, I watched a lot of your videos which helped me a lot, for the installation of the cerbo, but I have a problem that I cannot solve, my screen does not go to sleep, even with the shutdown package... i have an original raspberry screen powered by two wires on the pi 4 Thank you very much for your help

[@tobisreallifeskillswithtobi]

I assume you do have the VenusOS installation not a native cerbo GX, is that correct?

[@Defintothewild]

@@tobisreallifeskillswithtobi yes I have instal VenusOs

[@benedwards9140]

Can venus os use these temp numbers to control anything? Relays for example?

Big thanks for your video. Will try to implement your solution in my truck. My idea for one of the sensors is to be able to monitor temperature behind drawer type fridge and cooling fan it it gets too hot. Those small boards? They are just for making connection easier or are they doing something else ?

[@tobisreallifeskillswithtobi]

No, that's all I would say!

[@mickeymouse-lu2yk]

They have a cap to clean up supply and apper to have a pull up resistor to vcc for data

[@paulhowes3788]

So i intalled this with 3 sensors. I built a breakout board off the GPIO pins. All worked great for days no where the temperature should be on the device list it just reads OK? Restarts ect dont change this. The sensors are seen in the device list but no longer read the temperature. Any advice much appreciated

[@tobisreallifeskillswithtobi]

Try re-installing the package.

[@tiborchren]

I like the DIY mobile solar stations and also the full time monitoring of the solar system, but it only works in an online connection, which the mobile solar station is not always online. Would it be possible to find a way to combine these two things together in Venus OS? When the mobile solar power station was offline in use, the data would be stored in the memory of the SD card, and when it came online again at home using WiFi, the offline data would either be automatically uploaded to the system, or the system would ask that it has registered offline use and whether to upload that data from the memory from offline use to the system. In this way it would theoretically be possible to monitor mobile solar stations in both online and offline use. I wrote to two mobile solar station manufacturers and they found the idea interesting. As far as I know, only Solar Assistant can monitor fully offline or fully online, but it can't combine them together. Venus OS can do offline monitoring? Tobi, what do you think of this idea? Do you think something like this could be programmed into Venus OS? Maybe someone has already solved this in Venus OS? I don't know... I don't know of any solar monitoring system that allows full online and full offline monitoring in one system. I think it would be useful for many people.

[@tobisreallifeskillswithtobi]

I will do a test with Victron soon and see if we loose data when disconnected. Solar assist is on my list as well but I have not had the time working on it yet unfortunately.

[@anzzgar]

As far as i know the data is stored on the sd card, about 1mb for every 8 days

[@tobisreallifeskillswithtobi]

@@anzzgar Do you know where I can find this information?

[@Ryan-nd3zh]

How would you have the temp sensor trigger relay 2 ?

[@tobisreallifeskillswithtobi]

When connected you can go to Settings--> Relay --> Function (Relay 2) and set it to temperature. Then you have to configure the Temperature control rules according to your device you want to turn on/off. I hope this helps

[@Ryan-nd3zh]

@@tobisreallifeskillswithtobi thanks. Appreciate your prompt replies.

[@eadmineadmin2374]

And where is the link to this temperature sensor wires you are using?

[@tobisreallifeskillswithtobi]

Links are in the description.

[@donnanorth7324]

Please work from a script.

[@tobisreallifeskillswithtobi]

What do you mean with this?