Measure over 3.3 v

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Gadget999

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I will need a voltage divider to reduce the voltage of an input signal ie 12v

Is there a chip / breakout board suited to this task

Is there an easy way to allow the resistor to be adjusted for different voltages ?
 
Ohm’s law (8th grade stuff) allows you to calculate whatever voltage divider.

Little reminder: Vout = Vin * R1 / (R1 + R2), so to bring 12V down to 3.3V, select R1 to 3.3k and calculate R2 to 8.7k.
 
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