Temp Sensors

[CrootUK]

Anyone able to recommend a decent/cheap temp sensor that can alert using SNMP / Email?

 

Been recommend Jacarta already and have looked at the Meraki sensors too.

[DrCheese]

Unifi do sensors, although does rely on you having their WiFi points within Bluetooth range

[howartp]

and have looked at the Meraki sensors too.

 

Meraki sensors are (ball park) £100 for the unit, £100 for the probe and £100 for the plug, none of which come with the unit.

 

I bought two units last month then discovered there's nothing in the box and I need to fork out another £400 to make them do anything.

[mikeprice]

Probably no what is wanted - but there is a Temper usb device costing only about £10

 

 

there is some stuff on github to get data from it - so could easily be modified to communicate with anything if someone wants to mess about in Python

 

 

I did used to have one many years ago when I came back from having no voice (not even going to try to spell lary..........) and needed to check my teaching room temperature (about that of a sauna) to prove to Occy Health that it was causing the problem!

 

It does need a USB extension cable to avoid picking up excess temperature from the machine it is plugged into

 

 

works on a Pi as well if you have one lying around

[jmak]

Came across this last week - I haven't tried it yet

 

https://hackaday.com/2023/11/29/converting-bluetooth-sensors-to-zigbee/

[gszech]

We are using Unifi Sensors. They cost £50 but you need UniFi APs that support Bluetooth 5.0, BLE

https://eu.store.ui.com/eu/en/products/up-sense

 

• Motion sensor (5 m/16 ft max. range)
  
• Magnetic entry sensor for door or window open/close
  
• Accelerometer for garage door open/close
  
• Temperature sensor
  
• Humidity sensor
  
• Ambient light sensor
  
• Alarm sound sensor
  
• Water sensor for detecting leaks and floods (requires water sensor adapter accessory, only available in 3-pack at general release)
  

Edited December 12, 2023 by gszech

[3s-gtech]

https://www.serverroomenvironments.co.uk/server-room-monitoring/room-alert-3e-monitors

[dhicks]

works on a Pi as well if you have one lying around

 

A Raspberry Pi with power supply and case plus a Temper USB temperature sensor will cost around £100 for the hardware, which isn't actually bad compared with other solutions. If anyone wants a hand setting up something to run on the Pi to read temperature and / or take action if it hits a certain level then I'm available - I've already set a couple of similar devices up. The Temper sensor works on Windows or Mac devices, too, so you could actually have a monitoring script running directly on your Windows servers, if you prefer.

[mikeprice]

A Raspberry Pi with power supply and case plus a Temper USB temperature sensor will cost around £100 for the hardware, which isn't actually bad compared with other solutions. If anyone wants a hand setting up something to run on the Pi to read temperature and / or take action if it hits a certain level then I'm available - I've already set a couple of similar devices up. The Temper sensor works on Windows or Mac devices, too, so you could actually have a monitoring script running directly on your Windows servers, if you prefer.

 

You could probably use any old computer you have lying around

you know - the "spare laptops" the teachers KNOW you have available

 

 

 

although if it is on Windows 10 then support and security update might be a problem

 

I was actually thinking about my old school - they had several Pis lying around with no apparent use for them - as did a museum I did some work for

I did write a simple UDP comms thingy for them as well - it would be simple to lob a few lines from it into the github source - probably

[dmj]

A raspberry pi would be overkill for this application IMO, something like an ESP32 would be far better suited - and far cheaper. You should be able to get the whole project wrapped up for £30. It would be a good project to get some kids onto.

 

https://randomnerdtutorials.com/esp32-email-alert-temperature-threshold/#:~:text=The%20ESP32%20also%20hosts%20a,be%20programmed%20using%20Arduino%20IDE.

[mikeprice]

A raspberry pi would be overkill for this application IMO, something like an ESP32 would be far better suited - and far cheaper. You should be able to get the whole project wrapped up for £30. It would be a good project to get some kids onto.

 

https://randomnerdtutorials.com/esp32-email-alert-temperature-threshold/#:~:text=The%20ESP32%20also%20hosts%20a,be%20programmed%20using%20Arduino%20IDE.

 

agreed - anything that can run python would do

I was just thinking that the cheapest computer is one that you already have and have no other use for

[stevewill6]

https://www.comms-express.com/products/geist-watchdog-15-p-un-environment-monitor-c-w-temp-humid-dew-point-sensors-poe/

 

I have one of these in the server room.

 

About the cheapest off the shelf product i could find at the time.

[Aprice]

If it's for a Server room, your UPS might have a connector for a temperature probe. All the APC units I've worked with that had the network cards fitted have had the option.

[howartp]

We've just ordered two of https://www.filesthrutheair.com/shop/Wireless-Sensors-c121294593

 

Will see how they go after christmas.