TEMPERATURE SENSOR BRICK (Itead IM120710010)

With switch to shift between analog and digital output. Able to read the specific temperature information (analog) or the over-high or over-low temperature information according to the threshold (digital). The adjustable potentiometer is used to set the temperature threshold. With hysteresis comparator circuit for more stable digital output voltage.

 

4. Detecting direction can be rotated for better adaption.

Specifications

PCB Size	36.0mm X 24.0mm X 1.6mm
Working voltage	3.3 or 5V DC
Operating voltage	3.3 or 5V DC
Compatible interfaces	2.54 3-pin interface and 4-pin Grove interface(1)

Note 1：  D for digital output port, A for analog output port, S for analog/digital output port ( defined according to the switch), V and G for voltage at the common collector and ground respectively

Note 2： When setting as analog output, output range is 0-3.3V or 0-5V according to the working voltage (V,G); when setting as digital output, output is 0/3.3V or 0/5V according to the working voltage (V,G).

Electrical characteristics

Parameter	Min.	Typical	Max.	Unit
Working voltage	2.1	5	5.5	VDC
Analog output voltage（VCC=5V）	0	Vout	5	V
Digital output voltage（VCC=5V）	0	-	5	V
Working current（VCC=5V）	-	5	-	mA
Temperature sensitive resistor（temperature is 25℃）	-	10	-	kohm
Threshold hysteresis ΔUth	-	VCC*0.09	-	V

 

Temperature Vs. Thermistor resistance

Hardware

Top view

 Switch and indicator

1. Regulating of threshold voltage:

The threshold voltage is a voltage for comparison. When the temperature value read by the sensor is above the threshold value, a low level (0V) will be digitally output; when the temperature value read by the sensor is below the threshold value, a high level (3.3V or 5V) will be digitally output. In this way, the digital pin can be used directly to read the current temperature in the environment to see if it is above the threshold or not. The threshold voltage can be regulated by simply twisting the potentiometer which is shown in the following diagram, and it increases by rotating to left side and decreases by rotating to right side.

 

2. Switch to shift between analog and digital output

For S pin in 2.54mm 3-pin interface and 4-pin Grove interface, it outputs analog signals when switch is pushed to A terminal and digital signals when pushed to D terminal. When there is analog signal output, it can read the specific temperature value; when there is digital signal output, it can only indicate whether the temperature is above threshold value or not.

SCH_IM120710010.pdf

DS_IM120710010.pdf

DEMO_IM120710010.zip