Load cell validity check

[tkevinbest]

🚀 Feature Request

In the load cell driver, we could add checks for broken wiring. It is very unlikely that a channel returns the full scale signal of 4095 and even less likely to maintain it. If we see this, we could print a warning to the user that suggests they check the wiring.

🔈 Motivation

Broken wires are a pain and sometimes hard to find.

Example

If we saw this repeatedly in the raw counts (or we could do this on the voltage scale), we would trigger a warning:

[2111 2054 1946 2052 4095 2032]

Note the 5th value is saturating the ADC at 4095.