blueroomelectronics
Well-Known Member
When using a 38KHz IR detector, what type on input pin is your favourite (least software overhead)?
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Mike said:That's got to be one of the most exotic uses for PWM I've come across (grin). I've used a resistor in series with a relay to accomplish something similar. When you first key the relay it sees the full voltage and as the current ramps up there's a small voltage drop built up across the resistor. Of course this wastes power on the resistor while your scheme is conserving energy quite nicely.