MitchElectronics
Temp Sense
£3.99
20 items in stock
The Temp Sense is a temperature sensor kit that provides both a digital and analogue output for connecting to other circuits. This kit is excellent for makers needing to add a light-sensing module to their design, and ideal for beginners looking to get some soldering practice.
- Product Code
- TEMP-SENSE
- Manufacturer
- MitchElectronics
- Manufacturer Part Number
- TEMP-SENSE
- Category
- Sensor Kits
- Country of Origin
- United Kingdom
RoHS: YesREACH: YesCE: YesUKCA: Yes
Overview
Product Description
The Temp Sense electronic kit uses a thermistor in a potential divider configuration to produce a variable voltage that depends on the temperature of the thermistor. The thermistor is an NTC variant, meaning that its resistance decreases as it increases in temperature, and the Temp Sense has two outputs; one digital and one analogue.
The digital output of the Temp Sense is connected to the output of a comparator which compares the thermistor voltage to a potentiometer output. Thus, the potentiometer determines what temperature results in a logical one or zero. The analogue output of the Temp Sense is connected to an amplifier that is set with a gain of one, but a second resistor (soldered into R2), can increase this gain.
The digital output of the Temp Sense is connected to the output of a comparator which compares the thermistor voltage to a potentiometer output. Thus, the potentiometer determines what temperature results in a logical one or zero. The analogue output of the Temp Sense is connected to an amplifier that is set with a gain of one, but a second resistor (soldered into R2), can increase this gain.
Resources
Instructions & Documentation
Technical
Product Specifications
- Assembly
- Kit form
- Prebuilt
No
- PCB Dimensions
- 40mm x 20mm
- Mounting Holes
Yes
- Component Count
- 8
- Battery Included
No
- Operating Voltage
- 3V to 12V
- Operating Frequency
- N/A
- Output Voltage Digital
- VCC – 1.7V
In the box
Included With This Product
| Name | Quantity | Reference |
|---|---|---|
| LM358 | 1 | U1 |
| 8 DIP Socket | 1 | U1 |
| 1KΩ NTC Thermistor | 1 | TH1 |
| 1KΩ Resistor | 1 | R1, R2 (R2 Optional) |
| 10KΩ Resistor | 1 | R3 |
| 100nF Capacitor | 1 | C1 |
| 10KΩ Potentiometer | 1 | RV1 |
| 4-Way Socket | 1 | J1 |
| Temp Sense PCB | 1 | — |
More information
Applications
- The Temp Sense is excellent for projects that need to react to changes in temperature, and the onboard potentiometer allows for tuning the trigger point. For example, the digital output of the Temp Sense can be used to control cooling fans and other environmental controls. The analogue output of the Temp Sense can be directly read by ADCs on microcontrollers for approximating the actual temperature, but note that NTCs require calibration due to their wide tolerances.
- Education and training – Useful for teaching NTC thermistors, potential dividers and temperature sensing, while providing practical experience with through-hole soldering, component identification and PCB assembly.
- Project integration – Suitable for projects such as Environmental Monitor, Active Cooling, Reaction Monitor, and other designs where the following function is useful: NTC-thermistor temperature sensor with analogue and adjustable thresholded digital outputs
More information
Notes
- Electrical specifications are nominal and may vary with component tolerances, supply voltage, load and operating conditions.
- The product is supplied in kit form and requires soldering and assembly before use.
- Check component values and observe the polarity or orientation of ICs, diodes, LEDs, transistors and electrolytic capacitors before applying power.
- Sensor thresholds and analogue readings can vary between components and environments; calibrate the module for the intended application.