TrH Meter Kit

(2 Reviews)

DIY temperature and humidity meter for indoor use.

Designed by Embedded Lab in United States of America

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DIY temperature and humidity meter for indoor use.

Note: Dec 12, 2014 The new lots of TrH Meter kits will have Red LED displays instead of Yellow. The PCB color could be Green or Red, and one or more components might come preassembled. TrH Meter a DI…

Note: Dec 12, 2014

The new lots of TrH Meter kits will have Red LED displays instead of Yellow. The PCB color could be Green or Red, and one or more components might come preassembled.

TrH Meter a DIY microcontroller-based indoor thermometer plus hygrometer that displays temperature (°F/°C) and relative humidity on 4 seven segment LED displays which adjust their brightness level according to the surrounding illumination. The displays are 1 inch big, emits bright yellow color, and are readable from more than 50 ft away. It consists of a closed loop system that continuously assesses ambient light condition using an inexpensive light-dependent resistor (LDR) and uses that information to adjust the brightness of the display. The DHT11 sensor is used to measure temperature and relative humidity. The microcontroller used in this project is PIC16F688, and it runs at 4 MHz internal clock. A separate display driver chip (MAX7219) is used to control and refresh the display data on the seven segment LEDs. A 3-position slide switch controls power ON/OFF and Fahrenheit (°F) or Celsius (°C) scale select for temperature display. You will receive a preprogrammed PIC16F688 microcontroller in the kit.

Find more details at http://embedded-lab.com/blog/?p=6582

You will receive a complete kit with a preprogrammed PIC16F688 microcontroller. Here's the list of components that you will receive in the kit.

Click here for assembling instructions.

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Review Breakdown

Average Ratings

Product: (4.00)

Documentation: (2.00)

Shipping: (3.00)

Communication: (5.00)

Leo | Dec. 2, 2015

Excellent product and support

The unit does not come with any instruction but can be found on their web site. Had a problem from my own doing, returned unit and was fixed fast and free. Don't see that service any more... Will definitely buy from again. Thank you for the support.

Emile | May 3, 2013

Great project

Easy to build, and had easy instructions. No problems for me!

Now I just need a solar panel to attach to the back, and stick it on a window to get rid of the battery... Review Image