Comment by madaxe_again
1 month ago
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.
> 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.
Whatever values you stick in there are about as accurate as the scale is, so.
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.
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.