case 06 NTC
9. case 06 NTC#
The temperature sensor is a sensor that can sense the temperature and convert the temperature to output signal. The temperature sensor is core of temperature measurement instrument.
9.3. Hardware Connect#
Connect circuit as above picture and put 2 AAA batteries into batteries pack.
9.4. Principles of Circuits#
The GND of slot on micro:bit is into innards of batteries’ GND to generate current loop.
9.5. Introduction of Components#
The NTC is an analog temperature sensor where the output voltage and temperature form a liner relationship. The higher the temperature, the larger the output voltage. The experiment box included a NTC.
Note: Please note the positive and the negative when you are connecting.
Click on “New Project” and set a new Project.
The reading is an analog value of the IO port, we need a formula as above to convert the values into Celsius.
Set “Temperature” as a variable to store the Celsius. As above formula, convert the values of P0 into Celsius.
Show the temperature value and pauce a second.
You also could directly download program by visiting website as below:
Show the current temperature on the micro:bit allay.