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Want to build LCD readout of temp sensor

Willy Bob
Prodigy 20 points

Pardon the total noob question, but I am looking to build an LCD readout for a single temperature sensor. I already have the sensor, it is a Bitspower 2-pin device that measures water temperature for a computer water cooling setup. If I plug the two pins into a fan controller with digital temp sensors, it works just fine, but I have a different controller now without temp readout. So, it is my understanding that I could plug the sensor wires into some kind of analog-to-digital converter, which could then send the converted temperature to a modest 3.5 or 4.5 character LCD display.

I've some experience soldering, but this would be the first circuit that I'd actually build, so any suggestions or pointers or corrections to the idea above would be very helpful.

Thank you!

 

  • 0
    TI__Mastermind 43835 points

    The link you provided doesn't tell what type of sensor is inside the probe. It could be any of several types of thermocouple, thermistor or diode. We sell diode based temperature sensors, but would also support a volume customer using our analog products to measure the other types.

    Temperature sensing aside, your plan is missing a critical piece. A microcontroller, like TI's MSP430, would typically be used to fetch and convert the temperature data before displaying it on the LCD. Your design will need to tie all these pieces together, and the microcontroller must be programmed afterwards.

  • 0 in reply to Ren Schackmann
    Prodigy 20 points

    Ren said:

    The link you provided doesn't tell what type of sensor is inside the probe. It could be any of several types of thermocouple, thermistor or diode. We sell diode based temperature sensors, but would also support a volume customer using our analog products to measure the other types.

    Temperature sensing aside, your plan is missing a critical piece. A microcontroller, like TI's MSP430, would typically be used to fetch and convert the temperature data before displaying it on the LCD. Your design will need to tie all these pieces together, and the microcontroller must be programmed afterwards.

    Sorry about that. The probe is a thermistor. So I'm looking for a design for a simple LCD display to show "29.7" for example, which I imagine requires the A2D converter, a microcontroller, and various resistors, capacitors, registers, etc.  Ambitious as it might be, I think it sounds like a good first project for me to undertake, at least, that's what I say now. :-)

    Thanks,