One day I was thinking about the stories I’ve heard about babies and small children dying from being left alone in a hot car and how easy it would be to help prevent this from happening. I wanted to make something that anyone could make from household materials with minimal effort and no soldering.
This entire project costs less than $10 and can even be free if you already have a greeting card with audio.
All you need is an audio greeting card (with or without recording option), string, tape, and a small piece of paper.
As a college student, I don't have access to a car at the moment, so I decided to test the project on my door and possibly scare my roommate a bit in the process.
Disclaimer: This project makes no guarantees about successfully reminding parents about children left in their car. The device gives an audio reminder which may be ignored or the device may not have been set-up to begin with. This device is only meant to be an additional reminder.
Step 1: Record a Message
Follow the instructions on the card to record your message. Leave a note in you own voice or make a special comment.
My recording welcomed people to my room, asked why they were doing, and eventually asked them to leave.