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Engagement
Author: kk99
Date Created: 2 Jan 2017 6:59 PM
Views: 572
Likes: 13
Comments: 6
  • infrared
  • attiny 2313
  • arduino_projects
  • leddisplaych
  • thermometer
  • attiny
  • pyrometer
  • arduino
Related
Recommended

Infrared thermometer

kk99
kk99
2 Jan 2017

I would like to show you a infrared thermometer with MLX90614 sensor, seven segment display HP QDSP-6040 and ATtiny2313 MCU. Sensor allow to measure temperature in following ranges:

1) -40 - 125 °C - in case of measurement of sensor temperature,

2) -70 - 380 °C - in case of measurement of object temperature.

In project is implemented only measurement of object in Celsius degrees.

 

ATtiny2313 MCU communicates with sensor by SMBus. Measured value of temperature is shown on display. Current per single segment of display is configured to 4.67 mA, so display can be easily driven directly from MCU. In first solution as power supply was used ML2020 battery, but it was replaced with 200 mAh battery with TP4056 charger module. Housing was made from epoxy resin.

 

Schematic:

Images of first version:

 

Images of second version:

 

Video:

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Source code in attachment.

Attachments:
pyrometer.zip
Anonymous

Top Comments

  • kk99
    kk99 over 5 years ago in reply to DAB +2

    Thanks.
    I didn't calibrate the sensor. I only compared readings to measurements from the thermocouple included to fluke DMM. I have following sensor model: MLX90614ESF-BCC and according to manufacturer…

  • koudelad
    koudelad over 4 years ago +1

    The HP QDSP-6040 display is really beautiful. Is there any chance to buy somewhere a similar one (small, easy to read, DIP layout)?

  • genebren
    genebren over 4 years ago +1

    Cool project! Nicely built.  Have fun taking temperature reading.

  • kk99
    kk99 over 4 years ago in reply to koudelad

    You should look for QDSP or HDSP series of displays e.g. on ebay. Here are examples:
    https://www.ebay.com/itm/QDSP-6549-6549-9810-E-LED-Display-4-Digit-Alphanumeric-Display/380990421227?hash=item58b4cc78eb…

    https://www.ebay.com/itm/LED-DISPLAY-ALPHANUMERIC-HDSP-2112-1175588/351609645408?epid=650744624&hash=item51dd916960:g:zI…
    https://www.ebay.com/itm/5-x-TIL306-RED-TI-7-SEGMENT-NUMERIC-LED-DISPLAY-GOLD-PINS-WITH-SOCKETS-GOLD/253259002312?hash=i…

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  • genebren
    genebren over 4 years ago

    Cool project! Nicely built.  Have fun taking temperature reading.

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  • koudelad
    koudelad over 4 years ago

    The HP QDSP-6040 display is really beautiful. Is there any chance to buy somewhere a similar one (small, easy to read, DIP layout)?

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  • driewe
    driewe over 5 years ago

    The sleek design is very eye catching!

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  • kk99
    kk99 over 5 years ago in reply to DAB

    Thanks.
    I didn't calibrate the sensor. I only compared readings to measurements from the thermocouple included to fluke DMM. I have following sensor model: MLX90614ESF-BCC and according to manufacturer documentation it has factory calibration and high accuracy of 0.5 °C in range 0...+50°C.

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