Pet Car Alarm System for TI-84 Plus CE (OS 5.3 and above)

Pets suffer when left unattended in a car on a sunny day. Understand the science behind the greenhouse effect. Use math, computer programming and engineering to design a pet-smart alarm system.

Author: Texas Instruments Inc.

Topic:  Biology  Computer Science  STEM


Save a Pet

Design a car alarm system that protects pets from overheating.

Students create a system to measure temperature and the presence of a magnetic field to trigger an alarm.

 Greenhouse Effect

Homeostasis of mammals

Temperature scale conversion

Multiple inputs / outputs

Feedback and Control system

Coding concepts:


  Conditional Statements



Demonstration video  link


Project Resources

Download Teacher Document PDF link  Word Doc  link

Download Student Document PDF link  Word Doc  link


Download Zipped file of TI-84 Plus CE .8XP program files for all project challenges link

Download TI-84 Plus CE .8XP program file for the final challenge link



Display Image of sun rays striking automobile link

Display Table of internal auto temperatures vs. time link

Display Image of example Pet Car Alarm Project  link

Display Image of TI-Innovator Hub set-up diagram for Pet Car Alarm Project link


Learn to do the project yourself

Download Learn to do the project PDF link


Setting up

Update your TI-84 Plus CE, TI SmartView CE emulator software and TI-Innovator sketch link

Download a tutorial on using the TI Connect CE software for program editing and transferring files to and from your calculator  PDF link  

Download a step-by-step guide to updating your TI-Innovator Hub  PDF link  

TI-Innovator White LED PDF link


Own project equipment

Here is information for budget requests and grant proposals.

Download a PDF listing the equipment needs for each TI-Innovator Hub Project  link

See a list of TI Instructional Product Dealers and request a quote  link


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Publisher specific license