Transmit/Receive analog signals

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Discussion Overview

The discussion revolves around the transmission and reception of analog signals, specifically focusing on sending the voltage drop across a resistance thermometer wirelessly to another circuit. Participants explore components and methods suitable for a beginner-level project with a transmission distance of approximately 5 meters.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant seeks recommendations for components to build a wireless signal transmission system for a resistance thermometer.
  • Another participant suggests searching for commercially available wireless voltage meters as a potentially easier and cheaper alternative to building a system from scratch.
  • Some participants emphasize the importance of finding both a transmitter and a receiver for the project.
  • A suggestion is made to consider using an infrared (IR) transmitter/receiver pair if a clear line-of-sight can be ensured, noting that IR may be more reliable than RF under certain conditions.
  • Participants express varying levels of confidence in their ability to assemble the necessary components, with some indicating they could manage the project.

Areas of Agreement / Disagreement

Participants generally agree that there are commercially available solutions that could simplify the project. However, there is no consensus on the best approach, as some advocate for building a system from scratch while others recommend adapting existing products.

Contextual Notes

Participants mention the need for a clear line-of-sight for IR transmission and the potential for RF interference, but do not resolve the implications of these factors on the project's feasibility.

Who May Find This Useful

Individuals interested in electronics, particularly beginners looking to explore wireless signal transmission and reception, may find this discussion useful.

nlis12
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I'm completely new to transmitting/receiving signals, but I wanted to get a scope of what kind of components are out there that I could use to build this system.

I wanted to read the voltage drop across a resistance thermometer (Vt) and send this signal wirelessly to another circuit, where I could then read Vt on the receiving end. The distance between the transmitter/receiver would be ~5meters, so not too far.

Can someone recommend some components that may be easy to use for this purpose?
Is this project simple or do you think its something a beginner wouldn't be able to achieve?

Any input is much appreciated!

Thank You.
 
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A search, https://www.google.com/search?source=hp&q=wireless+thermometer turns up many results of commercially available ones. If you can adapt one of those, it would be much cheaper (and easier) than building it from scratch.

To expand the search to wider temperatures, partially type in the search term and look at the suggested search options.

I take it that this is your real question.
nlis12 said:
Is this project simple or do you think its something a beginner wouldn't be able to achieve?
If you can do electronic assembly (know which end of a solder iron to pick up :wink:), you could build one, of course you would have to find an appropriate design or design it yourself.
 
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Tom.G said:
A search, https://www.google.com/search?source=hp&q=wireless+thermometer turns up many results of commercially available ones. If you can adapt one of those, it would be much cheaper (and easier) than building it from scratch.

To expand the search to wider temperatures, partially type in the search term and look at the suggested search options.

I take it that this is your real question.

If you can do electronic assembly (know which end of a solder iron to pick up :wink:), you could build one, of course you would have to find an appropriate design or design it yourself.

This is perfect, I had no idea these things existed!
I'll look into some receivers!
Thanks!
 
BTW, if you can be sure of a clear line-of-sight, you might consider using an IR Tx/Rx pair. You will still need to search for available modules, but IR can be more reliable that RF, depending on what sources of RF interference (or competition in the case of WiFi) there are.
 
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nlis12 said:
I'll look into some receivers!
Many/most of the consumer ones include both the transmitter and receiver with a visible digital display. If you need an electrical output, it might, or might not, be easiest to decode the drive to the digital display.
 

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