Transmit 4 channel temps via RF

Discussion in 'The Projects Forum' started by Scotto, Sep 6, 2009.

  1. Scotto

    Thread Starter New Member

    Sep 6, 2009
    Hi all,

    1st post to your forum.:)

    What I have now:

    I have a project that I need help on. I built a 4-channel over-temp alarm circuit(not my design) which monitors 4 packaged thermistors. If / when the the over-temp condition is reached, the high is noticed by a TWS 434 encoder and sent to a RWS 434 decoder which will, in turn, light an led to notify me of the alarm. Attached is the circuit. I have taken out the buzzer and used that high for the encoder and ultimately the transmitter.

    By the way, these are monitoring temps at diff. water depths off my dock, as well as, air temps. The distance from the house to the dock is about 60 linear feet.

    Schematic is attached.

    What I want:

    I want to be able to read the actual temp. from each channel in my house.

    Can I use some or all of this circuit? Is there something out there that I that I can buy that would make this simple without killing my wallet?

    Not sure where to go from here.