Using RF Transmitter/Receiver to power LEDs from a Sensor?

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Discussion Overview

The discussion revolves around the use of RF transmitter and receiver modules to wirelessly transmit a signal from a pressure sensor to control an LED. Participants explore the feasibility of using alternatives to microcontrollers for signal conversion and clarify the intended functionality of the system.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant inquires whether a microcontroller is necessary for converting the 4V signal from the pressure sensor to be transmitted.
  • Another participant suggests using a UART for the transmission process.
  • A clarification is sought regarding whether the goal is to send a signal to turn on LEDs or to transmit power to light them, emphasizing the importance of this distinction.
  • The original poster confirms the intention to transmit a signal that activates the LED when the sensor is triggered, rather than transmitting power.
  • One participant expresses confidence that the RF modules can work for simple signaling and notes that the transmitter uses Amplitude Shift Keying, which can be managed with 0 or 5V signals.
  • It is suggested that a microcontroller may not be necessary for a simple on/off control setup using the digital output of the transmitter.

Areas of Agreement / Disagreement

Participants generally agree on the feasibility of using the RF modules for the intended signaling purpose, but there is no consensus on the necessity of a microcontroller or alternative methods for signal conversion.

Contextual Notes

Some assumptions about the voltage levels and the specific requirements for the transmitter and receiver are not fully explored, and the discussion does not resolve the potential need for additional components or configurations.

SeanLynch91
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I have a pressure sensor that gives off 4 volts when actuated and I would like to transmit it a distance to an LED light. So I found these RF Link Transmitter/Receiver at 434MHz:

https://www.sparkfun.com/products/10534
https://www.sparkfun.com/products/10532

The data sheets and instructions I’ve read all suggest a microcontroller. What I’m asking is this:
For the transmitter side of my project (sensor that gives off 4V), could I use something other than a microcontroller to convert the 4V to send through the transmitter?

I do have an Arduino Yun that I could use for the receiver side, but let's say I didn’t have an Arduino, what would I be able to use to convert the data from the receiver?

I don’t have much experience with wireless transmission and any help is greatly appreciated.

Thank you for your attention!
 
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Can we get this straight? Are you wanting to send a signal to a receiver that will turn on the LEDs or are you wanting to transmit the Power across a gap to provide the power to light them? It makes a vast difference and you use the word 'Power' in the title so we need to be sure what you want to do.
 
Sorry about the confusion. Here's the plan: I want to be able to light an LED when an object is on the sensor. The sensor gives off 4 volts when it is triggered then I would feed that into the transmitter, transmit that signal to the receiver so whenever that sensor is actuated an LED will light up. So I'm trying to send a signal to the receiver that will turn on an LED.
 
For simple signalling, those devices should work, at a basic level. I managed to look at the transmitter data sheet but the site was busy or down and I couldn't see the receiver spec.
As far as I can see, the transmitter is Amplitude Shift Keyed (i.e. On/Off signalling) which you can do with 0 or 5V from your sensor. Likewise for the receiver should give 0 or 5V, depending on the received signal level. At the price, they would be worth just buying and trying. I don't think the processor is a necessary for just a simple one channel on/off control. (Using the 'digital' output).
 

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