hello everyone, i have 2 of these voltage modules :
can i somehow combine them to be able to measure up to 50 volts or that wouldn't work?
or should i make a sperate voltage divider
You can make your own Voltage Divider, or put a resistor in series with the input (in series with the 30K resistor), or if you can solder surface-mount components you can change the resistor(s).
50V / (30000 + 7500) = 0,001333333 A or 1,33333 mA
7500 * 0,001333333 = 10V.
10 V damages the Arduino analog input.
See that the sensor is marked VCC < 25 V
yes i know that the maximum is 25 but what if i want to measure 50 ? should i make a new voltage divider or can i somehow utilize the 2 sensors the i have
what is the resistor value?
Use one of your dividers with a 39k resistor between it and the 50V+, give me a few minutes to make a drawing.
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Change the 30K resistor with a 67.5K.
As there is no 67.5 K resistor, you will have to use a 68 K resistor.
With 68 K, the maximum value over the 7k5 resistor will be 4.96689 V
Common comercial resistors.
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thank you so much!!!
Can you understand this drawing?
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Thank you!
That is amazing thanks alot, that would save me so much hastle and so much time!
much appreciate your help
Any time, good luck.
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