Recent content by rushi121

Will that device give false alarm if it is in the car?

Can I create a pocket step counter / pedometer just with accelerometer? If yes, can you explain how can I do that? The device should detect step irrespective of direction of device.

---------------------------- For timed protocol I will turn on and off pinging based on a switch. It won't be on most of the time. But I was thinking about how BLE Beacons work and they continuously ping and battery last from 6 months to 2 years. Can't we do something similar or are they...

I am a product developer but not an electronics engineer. I am doing a cost analysis of a product idea for my company. The product will need something like this... There will be two small portable devices (A and B) 1 meter apart (not in line of sight since A can be in pocket). Product A will...

I want a device that can either stick on dashboard or like a key fob in driver pocket that will help to detect whether person is in car or not. Requirements: - Device must have a detector and siren. When detector detects that person is not in car should buzz siren. - Can be a device in car or...

Can it also detect when is it closed?

@sophiecentaur How can accelerometers detect window state?

Can we use passive infrared proximity sensor ( https://www.adafruit.com/products/466 ) that is used in mobile phones as window sensors? The device (that has sensor) is placed on window glass and when that device detects a window frame it will trigger alarm. Will it work even if bright sunlight...

Which sensor does it use to detect air pressure?

I found this device on amazon. Any idea how it works? https://www.amazon.com/dp/B00CEKMQB0/?tag=pfamazon01-20

Thanks. Do you know any existing sensors/solution in market using any of the above methods (except switches) for detection? Also, my solution should have a small form factor and it should give accurate results. Will all above suggestions do the same? What type of engineer(s) I should look for?

Thanks. I guess both these requires to be attached to each window/door. Is there any way we can detect without attaching anything to window/door. Something like motion sensor to figure out window is in motion, measuring pressure of room etc.

How can we detect whether a home window or door is opened or closed using sensors. I know it can be done using proximity sensors and window sensors. I want to know all possible ways/sensors to detect it. I am no way related to physics so please try to answer considering that :) Thanks in advance.