Hi, This is what I have so far. However, feel free to suggest ideas that will ma

Question

Hi, This is what I have so far. However, feel free to suggest ideas that will make the circuit simple and or more reliable. The system will generate an alarm when a baby has been left unattended in the car. There will be pressure sensors on both, the driver's seat, and the baby's car seat. As soon as the driver is no longer making contact with the sensors two things will happen. First, a warning alarm will activate while, a counter will start counting. Once the counter reaches 60 secs (approximately) the warning alarm will turn itself off, and the main alarm will sound off. Now, the remote part. Once the driver is no longer making contact with the pressure sensors a link will be established between the two transceivers. One stationary say, car seat, and the other, a remote unit (key fob). Once the parent or guardian goes beyond a set range (approx. 10-15 feet?) the key fob will beep, along with the main alarm. The only way to reset the system is to remove the baby from the car seat, which will "kill" the link, or to seat back in the driver's seat. I can't think of any more details that you could possibly need, but if you do, send me a message and I'll answer within 5-10 minutes. For this, I will use two Arduino UNO with ATMEGA328P-PU, each with its own transceiver "NRF24L01"

Explanation / Answer

Your Idea is Very Good!

But please check my review on Arduino UNO with ATMEGA328P-PU,

After purchasing many components from Virtuabotix, I recently had the opportunity to know this company a little better.

I purchased a couple of these ATMEGA328-PU and I was in the process of building my first Bareduino328 Plus, but the voltage regulators that I had purchased somewhere else were faulty (they overheated when connected to a 9v battery and produced virtually no output, almost zero volts). I sent an email to Virtuabotix to inquire about the best match for the voltage regulator that they used in their demos, and within minutes Joseph Dattilo (CEO of Virtuabotix) replied with a much better answer than I was expecting: he confirmed that the model I indicated should work, but also mentioned that he could make it available on their site just to help me with my project. Within minutes, they had the perfect voltage regulator available, and for an excellent price too.

It is not very common to receive courteous and effective assistance these days, but it is even less common to experience this kind of niceness and competency at once in a single person and company. To me, it is almost more important than the product itself.

BTW: To date, I have purchase the following products from Virtuabotix, and they all receive 5 stars from me. Their products are very cheap, but of excellent quality too!

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