Tiny voltage sensor for our FrSky Telemetry Display
This nail size circuit includes a voltage divider and suppressor for measuring 0-36 volt batteries (1S-8S LiPo).
You can plug it directly to your FrSky D8R receiver or use a servo extension cable for extending.
You should connect only battery's plus(+) wire to sensor for measuring on one battery systems. Because your ESC and Receiver uses same ground as battery and you dont need extra cabling for ground wire. This is a good choice for reducing the current drain over receiver.