Activity description
This module introduces the basic principles of body temperature measurement using analog sensors and the fundamental concepts of electronics and programming with Arduino. Participants will learn the operation of the LM35 temperature sensor, signal conditioning, and visualization of the obtained data.
The activity consists of designing and building a digital thermometer using an LM35 sensor and an Arduino board. Once the circuit is assembled, the system will be calibrated, temperature measurements will be collected and the results obtained by each group will be analyzed. This practice simulates the operation of a digital body thermometer and allows understanding how sensors transform a physical quantity into an electronic signal that can be processed and interpreted.
Duration: 90–120 minutes
Documents to download:
- Teaching guide.
- Rubric.
- Working document.
Materials and resources needed:
- Arduino boards.
- USB cables.
- Protoboard.
- Electrical resistances.
- LEDs.
- Transistors.
- DuPont jumper cables.
- LM35 temperature sensors.
- LCD screens.
- External batteries.
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