what is the maximum number of xbee's to conect?
is it posible to have an xbee as a receptor and N-number of xbee's as senders,
overall project i want to have a cargo bay with a receiver and many trucks with their own xbee carrying just information about the trucks and that when the truck is near the cargo bay the arduino as receptor take knowledge about this,
thx 
what is the maximum number of xbee's to conect?
To connect to what? What kind of XBees? Where are they located, relative to each other? How much data do you send between them? How often?
is it posible to have an xbee as a receptor and N-number of xbee's as senders,
Yes. Depending on the type of XBee, N might have to be 1. Is that OK?
overall project i want to have a cargo bay with a receiver and many trucks with their own xbee carrying just information about the trucks and that when the truck is near the cargo bay the arduino as receptor take knowledge about this,
How many trucks? How many in range at one time? How much data? Is there bi-directional communication required?
PaulS:
what is the maximum number of xbee's to conect?
To connect to what? What kind of XBees? Where are they located, relative to each other? How much data do you send between them? How often?
I dont need to send too much data, its just so the cargo bay recognizes which truck is on bay and which one isn't, so just a serial number given to the truck.
is it posible to have an xbee as a receptor and N-number of xbee's as senders,
Yes. Depending on the type of XBee, N might have to be 1. Is that OK?
N being more than 100? and if it is possible, which Xbee should i use?
overall project i want to have a cargo bay with a receiver and many trucks with their own xbee carrying just information about the trucks and that when the truck is near the cargo bay the arduino as receptor take knowledge about this,
How many trucks? How many in range at one time? How much data? Is there bi-directional communication required?
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I'd want to know the max number of trucks that could be connected, and it wouldn't be bi-directional, at least i don't think i need it to be, either one could be possible? uni-directional or bi-directional.
I dont need to send too much data, its just so the cargo bay recognizes which truck is on bay and which one isn't, so just a serial number given to the truck.
The real question is how many are communicating at the same time. If only one truck is in range at a time, you have a very low data flow rate.
If 10 or 12 are, then you have a higher flow rate.
N being more than 100? and if it is possible, which Xbee should i use?
If you use Series 2, then you can form a network, and an XBee can send data to another via other XBees in the network. If all the XBee is sending is a string representing a serial number, and it isn't sending it too often, 100 XBees will be fine.
I can't help but thinking an RFID reader that the driver drives by, and scans his card, might be a better idea.
Or the very cheap nrf24l01, which would probably work with over 100 trucks so long as two don't come in at the very same time, and also you may need a few reciever depending how far apart the doors are
Yea, ive told my boss the same thing but he insists on it being totally automatic, no human interaction, and placing the id's in the trucks wasn't the solution becuase a reader with a meter distance is pretty expensive, but i get the point, i need to make him notice that
pato_llaguno:
Yea, ive told my boss the same thing but he insists on it being totally automatic, no human interaction, and placing the id's in the trucks wasn't the solution becuase a reader with a meter distance is pretty expensive, but i get the point, i need to make him notice that
Would i need an antenna with it?
Im not sure if i understand what this is
The nrf24l01 you can get for like 3$ on ebay ea(without antenna), and easilly have range of atleast 50ft , more if you got one with an antenna and amplifier, so one in each truck and divide the amount of bays by 50ft to know how many recievers you need, then just network them together to a pc or central arduino with rs485
tho only expensive part is you need a controller with every nrf24l01 although a barebones arduino will cost u 5$ so not bad, it may even work with an attiny which would be incredibly cheaper