uv-5r-interface serial data
wire to computer inputs audio speaker mic
Baofeng uv5r
there's no way to make this radio display its battery voltage. (Actually, some software versions on this radio might have this feature, but mine does not. I'm told that holding down the "0" key displays the battery voltage.) However, just like the UV-3R, it has a fairly well behaved battery status icon with 0–3 bars. You can set the power-on display to read whatever you like, for example your call sign