3.3 Volt comparability of analogue sensors
Vlad 2016-02-16 01:23:12 3787 Views7 Replies I have hooked up the Analog EC sensor to a 3.3 v micro controller, and it seems to be working. Your website says that it's a 5V item. Am I using it outside of spec?
What about other water sensors, so Analog pH Meter Pro, Analog ORP, etc? How do I know which ones are 3.3 V compatible?
What about other water sensors, so Analog pH Meter Pro, Analog ORP, etc? How do I know which ones are 3.3 V compatible?
2018-01-22 16:29:56 Do you mean the value you got are wrong? where do you put the sensor and what are the outputs? robert.chen
robert.chen 2018-01-22 10:40:54 Hi, can you elaborate more on why values would be wrong? Is there any way we could workaround this problem?
- Thanks edgarlz123
- Thanks
edgarlz123 
2016-02-17 21:31:55 Thanks!
I know it says 5V, but I didn't know if it's a recommendation or a requirement. Vlad
I know it says 5V, but I didn't know if it's a recommendation or a requirement.
Vlad 2016-02-17 10:29:43 No, the data are all messed up. May I know what do you see the operation voltage is 3V? As declared in the specification that it's 5V.
Leff
Leff 2016-02-17 04:51:09
Do you mean the readings will be incorrect at all, or do I just need to calibrate the probe?
From what I see, all parts of the circuit can operate at 3 V Vlad
Leff wrote:Hi Vlad,
Welcome!
Although 3.3V would get it working, but the readings are not correct actually, as you could read on the wiki that Please use an external stable power supply(such as 7.5V DC),and the voltage of MCU system as close as possible to the +5.00V. More accurate the voltage, more higher the accuracy!
Other water sensors are also 5V compatible instead of 3.3V.
Do you mean the readings will be incorrect at all, or do I just need to calibrate the probe?
From what I see, all parts of the circuit can operate at 3 V
Vlad 2016-02-16 10:24:12 Hi Vlad,
Welcome!
Although 3.3V would get it working, but the readings are not correct actually, as you could read on the wiki that Please use an external stable power supply(such as 7.5V DC),and the voltage of MCU system as close as possible to the +5.00V. More accurate the voltage, more higher the accuracy!
Other water sensors are also 5V compatible instead of 3.3V. Leff
Welcome!
Although 3.3V would get it working, but the readings are not correct actually, as you could read on the wiki that Please use an external stable power supply(such as 7.5V DC),and the voltage of MCU system as close as possible to the +5.00V. More accurate the voltage, more higher the accuracy!
Other water sensors are also 5V compatible instead of 3.3V.
Leff 