Via arduino Uno code to control fan speed dependant upon temperature Used in campervan where fridge is in an enclosed cavity which is ventilated with 2 * 12v fans Routine adjusts fan speed dependant upon cavity temperasture by pwm on npn transistor controlling power to fans Displays temperature and a bar graph of fan speed in % on a 2.2" TFT LCD display via software SPI To dim display at night a light sensor is monitored and via pwm reduces tft display as lux levels fall.
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mike5WA/FridgeFan_3
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Via arduino control fan speed dependant upon temperature
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