Turtleblocks sensor calibrations for V193

[tonyforster]

XO-4 B1 (preproduction) SKU292

self.voltage_gain = 0.0004073
self.voltage_bias = 1.6289

Range 0.17V to 3.08V

resistance, both inputs connected:

elif self.hw in [ XO4]:

if avg_buf < 6629:

self._resistance[channel] = \

1.0 * ((50000000 / (6629 - avg_buf)) - 3175)

range 0 to inf ohms

XO-1.75 (production) SKU203
self.hw reports as XO-1 so the model detecting logic is not working (sug0.94 OS883)

self.voltage_gain = 0.000101
self.voltage_bias = 1.371

Range 0.01V to 3.01V