Hi
I'll put this in the beginner section as I am one
I need to measure a couple of voltages (1-5V) 100ft up a mast (approx. 50m cable length). There is already a temp sensor (DS18B20) up there, or will be once I've assembled it, so was looking to add two ADC channels on a 1-Wire bus back down to the ground to measure FWD and REV power. However, the only device I can find is a MAXIM DS2450 but that is discontinued although available from China and several weeks delivery.
In my searches the MAXIM DS2438 came up but it isn't very good at measuring below 1.5V. It was designed for Li batteries.
Also found a BAE0910 but at £10 each (I need min 2) puts it above the cost of an Arduino.
The Arduino would be fine but it will be sitting approx. 10cm from a 300W 1296MHz RF amp and I'm a little concerned at it being effected by the RF or, more importantly, it effecting the pre-amp next to it. It will also more wires down and probably require something like an RS485 line driver at each end. However, it does mean I can add other stuff later.
Any thoughts as route to go or any 1-Wire adc's I'm missing?
Cheers
Rob