I'm trying to make a scoring system type of machine.
A simple way to think about it is you have 3 boxes (2 children and 1 parent).
The children boxes have a button. When the button is pressed I gather some data (no more than 32 bytes) from on board sensors and send it over to the parent box.
The parent box decides on a winner between the two child boxes. If the first child box presses the button then the second child box has X milli seconds to press the botton (something like 50ms).
The boxes are in a relatively near each other, no more than 10meters (32feet).
All the boxes will be running on batteries.
This isn't actually the project, but a simplification of it here since it would take too long to explain the entire project.
I'm trying to figure out what type of wireless communication method I should use. I have actually tried using the nRF24L01 chips... but they are way to unreliable as I literally have a pile of dead chips (They sometimes just die after the Arduino resets).
I am looking for something - low on power consumption, - can operate in a noisy environment (i.e. many of these boxes running all at once in different channels/addresses), - preferably can transmit and receive. - and is reliable (i.e. not the nRF24L01). I really don't care about range (since this will be operating in close range).
What are some good wireless communication modules/methods that would be best for this application? I saw the RFM69 433MHz chip, any thoughts?
EDIT (27 Nov 2017): Here is some info that helps explain it a bit.
The actual machine is for Fencing and the buttons are actually physical buttons on each sword. The data is capacitance data collected based on the voltage drop (or rise in the case of foil) to determine if the hit was a target hit or an off target hit (metal or not metal and how big of a metal in the case of foil). Then the parent box will light up telling the referee who scored valid touches. So both can get valid touches then the ref decides what to do (but the ref deciding is beyond this machine haha).
So the speed of transmission is very important. Should I use a single transceiver for both transmitting and receiving, or should I use individual transmitter and receiver chips?
For power consumption I can work around a larger power draw if that means faster communication.Although, ideally I would like not to need a large battery pack.