forked from M-Labs/thermostat
README: Correct expected TEC polarity
Adhere to the general convention of TECs cooling down with positive voltages.
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@ -184,7 +184,7 @@ postfilter rate can be tuned with the `postfilter` command.
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- Connect TEC module device 1 to TEC1- and TEC1+.
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- The GND pin is for shielding not for sinking TEC module currents.
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When using a TEC module with the Thermostat, the Thermostat expects the thermal load (where the thermistor is located) to heat up with a positive software current set point, and cool down with a negative current set point.
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When using a TEC module with the Thermostat, the Thermostat expects the thermal load (where the thermistor is located) to cool down with a positive software current set point, and heat up with a negative current set point.
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Testing heat flow direction with a low set current is recommended before installation of the TEC module.
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