HI, its simple project, and i bet this unit already in any online shops. But i want to try build it on my own, before i just buy it (since its already sold out in my online shop :o )
I prefer use bluetooth.
I was planning to make an anti lost item, which is basically an unit you put in your bags or keychains and it alerts you when u away from the bag or keychain (lets say 7-10m).
So basicly they will ping each other as transmitter and receiver, and when system no longer receives any ping (disconnect), so the alarm (buzzer) will actived
Is there anyone here who has worked on something similar or own a device similar to these? Because i wanna learn how to make it (i wish i could learn from arduino code). Or i will buy it with same requirement
If the units already in online shop, its okay just sharing in here so i could think about it..