Pylkasc
Posts: 1
Joined: Fri Feb 14, 2020 10:26 pm

Portable wireless temperature sensors

Fri Feb 14, 2020 10:37 pm

Hi all,
I have been googling for hours and have thoroughly confused myself about what I need. I am completely new to this and still need to buy my first pi. Any and all help would be greatly appreciated.

What I am looking for is a way to instantly read at least 2, ideally wireless temp sensors to a hand held screen. I have found this setup

http://projects.privateeyepi.com/home/h ... s-projects

The wireless sensors are exactly what I'm looking for but from what I gather is it needs an internet connection to display the readings. I would like to have just a readout on a display, as there is not wifi where I would be using this.

Thanks for the help

pfletch101
Posts: 585
Joined: Sat Feb 24, 2018 4:09 am
Location: Illinois, USA

Re: Portable wireless temperature sensors

Tue Feb 18, 2020 1:44 am

There are a lot of temperature/humidity (and other) sensors which report their readings wirelessly on the 433 MHz band. Ambient Weather makes a number of models, but there are others. The transmissions of most of the more common ones can be picked up by means of a Software Controlled radio plugged in to the Pi's USB port and decoded by rtl-433 - a well supported utility program. If what you want is a plug and play solution, Ambient makes those, too.

Lulaso574
Posts: 37
Joined: Sat Nov 16, 2019 6:51 am

Re: Portable wireless temperature sensors

Sun Feb 23, 2020 8:41 pm

pfletch101 wrote:
Tue Feb 18, 2020 1:44 am
There are a lot of temperature/humidity (and other) sensors which report their readings wirelessly on the 433 MHz band. Ambient Weather makes a number of models, but there are others. The transmissions of most of the more common ones can be picked up by means of a Software Controlled radio plugged in to the Pi's USB port and decoded by rtl-433 - a well supported utility program. If what you want is a plug and play solution, Ambient makes those, too.

Got a link to Ambient?
All I can get is ambient (the actual meaning of that word) temperature sensor.

pfletch101
Posts: 585
Joined: Sat Feb 24, 2018 4:09 am
Location: Illinois, USA

Re: Portable wireless temperature sensors

Sun Feb 23, 2020 8:52 pm

Here's an Amazon.com link to get you started: https://www.amazon.com/Ambient-Weather- ... 00HUVQI4O/

Alex Konshin
Posts: 46
Joined: Sun Jan 29, 2017 10:02 pm
Location: Boston MA, USA

Re: Portable wireless temperature sensors

Sat Mar 14, 2020 2:14 am

Look at my project. I hope it will be useful for you: https://github.com/alex-konshin/f007th-rpi
There is a thread about this project on this forum: viewtopic.php?t=173023
Basically it allows to intercept radio messages from such sensors. Then you can send it to other servers or you can read values using REST-like request.
Actually I have already implemented support for MQTT protocol by it is not released yet to public because I need more testing.

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