Nov. 2012 Article "Build the Chirper" -- Great idea!!!
Interested in the article because it is a great idea. Why did not I think of it? I just wonder why it is not standard in cars now, especially with all the aging baby boomers. I like the way the circuit draws power from the flasher only when it is flashing -- it stirs in the correct polarity no matter how the input signals are connected. Really neat how the circuit works. Neat how it was put together only using discrete components.
I bought the pcb off ebay, stuffed the board, bench tested it using a function generator. It works great. Now I just need to find the corresponding wire going to my tail signal lights. I pretty sure I can handle it, however, finding the corresponding wire will be the toughest part of this project. It also why I see this could never be a popular after market product for a car.
This Chirper idea needs to be designed into the car from the get go. With the newer cars most every thing is controlled via computer, and it only needs a small software change to implement this task. This is a feature that has no manufacturer's cost. The feature could alone swing the buyer from selecting one car over the other.
Again -- Great Idea!
If you've built a project from the magazine, or have something fun and interesting to share, show it off here!
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