Hi everyone,
Does any has one tried connecting 5v sensor to an esp32.I have a turbidity sensor which says it's 5v. How can I connect it to my esp32.
Use a voltage divider.
5.1K resistor and 10K resistor
Thank you
I heard some thing called logic level converter will it work.
It depends on the output of your turbidity sensor and the converter type.
If it's analog output it will not work,
Most logic converters modules are designed for interface that use open collector inputs/outputs.
There are other ways.
If you share the data sheet of your sensor maybe we can provide the Best solution.
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Good point - yes as the name implies it’s for logic (true/false - high/low) signals indeed .
Description
Operating Voltage: 5VDC.
Current: 30mA (MAX).
Operating temperature: -30 ° C to 80 ° C.
Compatible with Arduino, Raspberry Pi, AVR, PIC, etc.
Measuring Range: 0 ~ 1000 NTU.
It has 3 pins
what's the exact voltage?
4.5V is okay, that's why there's a big voltage regulator in the ESP32, to lower 5V down slightly to create 4.5V, the 5V label on your board says "5V" but the output should actually be around 4.5V.
look here:
Esp32 powering buck convertor with Schottky diode - ESP32 Forum.
What if I connected my turbidity sensor to Arduino Uno and then connect my Arduino to esp32
We need to know WHICH SENSOR you are using. not the "specs"
That doesnt tell us the nature of the output.
Sorry I couldn't get the datasheet.
Is their any other way
Is their any other way
Yes
Is the sensor output analog or digital?
Does it look like this?
Can you provide a link to that webpage please
I found it
It has an analog output so use the circuit I show in post #2
Ok thankyou
Connect the sensor OUT to the circuit IN
Connect the sensor GND to the circuit GND
Connect any ESP analog input to the circuit OUT
Connect ESP GND to the circuit GND
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Is this 3.3v can it work with esp32
SKU1074718.pdf (542.3 KB)
If you use the voltage divider I show in post #2