so I would like to build a system where while at a specified location or within a specified distance range there would be multiple transmitters devices that will individually transmit the same simple signal to a receiver to be recorded/ counted. This project needs to be as simple as it can possibly be, the transmitting devices would ideally be very small in size and use very little power, I don't care what kind of signal it sends as long as it's received and recorded. The receiver can be as simple as being a hard wired device with an antenna and powered by a vehicle or wirelessly receiving the information to a smartphone. I really have no preference just whichever way is the most simple. I would greatly appreciate any suggestions or tips or any input at all actually. I know absolutely nothing about technology, besides the basic understanding of the majority population... Other words I'm lost in the biggest darkest jungle, at night with no flashlight, compass or treasure map.
what distances are involved?
LoRa may be a good choice? low power, long distances, frequency depends on conntry
have a look at posts decimals-strings-and-lora
Does sound like a good application for LoRa, but more info on the environment and distances would help.
LoRa receivers are very sensitive, which means the transmitters can operate at low powers which in turn uses less battery power etc.
So the distance would be no greater then a mile and the location will be in an open flatland
LoRa sounds suitable - possibly devices with external antennas
have a look at Lora frequencies-by-country
what host microcontrollers are you considering - keep to 3.3V logic if possible
what sensors? how often sampled?
YES, you do, if something fails you need to know which device fails, so you can find it and replace it or repair it.
No surprise there.
But if you are not able or willing to describe the actual project, all the help you will get is guesses.
research modulation methods. you should know about OOK and ASK and FSK and PSK
think more about this. do you need the various senders to ID themselves? are you planning on having 3 transmitters sending "on" and not knowing which ones are transmitting?
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