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InaMORAta: Difference between revisions
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==Temps== | ==Temps== | ||
We want the water temperature, and ideally also our own temperature on the microcontroller. | We want the water temperature, and ideally also our own temperature on the microcontroller. The Uno's ATmega328P processor has an onboard temperature sensor: | ||
The Uno's ATmega328P processor has an onboard temperature sensor: | |||
<pre> | <pre> | ||
int readTemp(void){ | int readTemp(void){ | ||
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} | } | ||
</pre> | </pre> | ||
Unlike the Uno, it appears that the MEGA has no way to get its own temperature, lame. | |||
===External (thermistor)=== | |||
We're using an [https://www.alphacool.com/shop/monitoring-controlling/temperature-sensor/21456/alphacool-eiszapfen-temperature-sensor-plug-g1/4-chrome Alphacool Eiszapfen 17365] plug sensor. Its datasheet can be found [https://www.alphacool.com/download/kOhm_Sensor_Table_Alphacool.pdf here]. This is a 10kΩ thermistor (resistance varies with temperature) with a β of 3435K and a nominal temperature of 25℃. To effect a better read, we'll use the 3.3V as our reference. This requires hooking 3.3V up to AREF and calling <tt>analogReference(EXTERNAL);</tt>. We pair it with a reference 10KΩ resistor, and hook it up to 3.3V, ground, and analog input pin A0. | |||
==Wiring== | ==Wiring== | ||
