On: I Connected My Withings Body+ to Home Assistant with an ESP32

[madaxe_again]

You can build your own scale with an ESP32 for like $25 in parts - Hx711, load cells, ESP32, and a handful of trivial components. I threw together one that sits under my gas bottle, so I know when it’s running low. Adding impedance would be a pretty trivial step.

[baby_souffle → madaxe_again]

> Adding impedance would be a pretty trivial step.

But not the calibration that maps a raw ADC sample to "24.5% body fat, 21 Kg bone ..." etc.

[alex_sf → baby_souffle]

Whatever values you stick in there are about as accurate as the scale is, so.

[madaxe_again → baby_souffle]

Sure, you’ve gotta have some known good values to compare to, but those aren’t hard to come by. Pretty sure you can get a decent idea of BF with callipers or somesuch.

[baby_souffle → madaxe_again]

Body fat would be possibly the only metric that a withings scale gives you that you can get a somewhat accurate number from without needing a dexa scan.