craigcurtin
Senior Member
Guys,
I have a CAT5 cable run of about 70 metres (stupidly only pulled one when we did it and now no more access)
I currently have 2 x DS18B20's running fine from a 40x1.
I want to exapnd this to 3
My thought was to use two of the lines (or even two pairs) for +ve and GND and use the other lines for data lines to the DS18B20's
The +ve and GND could be broken out at a central point at the end of the run and then a standard 3 wire run to each DS18B20
Is this feasible to do - or am i missing something ?
If i was to do it this way would i put the 4K7 resistors at the far end of the wire (near the sensors) - or back at 40X1 ?
Craig
I have a CAT5 cable run of about 70 metres (stupidly only pulled one when we did it and now no more access)
I currently have 2 x DS18B20's running fine from a 40x1.
I want to exapnd this to 3
My thought was to use two of the lines (or even two pairs) for +ve and GND and use the other lines for data lines to the DS18B20's
The +ve and GND could be broken out at a central point at the end of the run and then a standard 3 wire run to each DS18B20
Is this feasible to do - or am i missing something ?
If i was to do it this way would i put the 4K7 resistors at the far end of the wire (near the sensors) - or back at 40X1 ?
Craig