So how many bytes can the AVR chip cope with?
So how many bytes can the AVR chip cope with?I should do some research as its a really important thing to know....
Maybe instead of using a resistor I could just use a piece of wire to create the resistance through the length lol...?
I think I can calculate the resistance per mtr of wire that I'm using so it shouldn't be too difficult to work out but if the cost of the wire exceeds the cost to install an RF module then I will have to do that.
Yup, just common up the GND, Vdd and output pins from all the devices, provide a 4k7 resistor from output line to Vdd and sufficient decoupling (one 100nF per device if they are separated by cable runs). The OneWire protocol is very clever and does all the magic.