I have been working with a generic, inexpensive water flow sensor that utilizes a hall effect sensor. Sensor works fine, but it is drawing too much current. I need to prototype a battery operated version, so I am looking to replace the sensor with a more energy efficient chip. But, I have very limited knowledge on the Hall Sensors.
MCU is Arduino Micro
Any recommendations on specific part numbers to look at as a replacement.
If we don't know what you are using, now, how can we recommend another sensor? Are you looking for an analog sensor or a digital sensor? How do you have this one wired. And finally how much current is too much current?
The sensor is imbedded in the sensor so I don't know unless I destroy the housing. I have another broken sensor that has a W130 chip/sensor. I am guessing all these cheap flow sensors have the same or similar part.
With the sensor, SD breakout board from Adafruit, and Arduino Micro, I get about 5 days of data before my 16000mAh battery pack dies. Since I can't turn off the sensor I need something that is much ore efficient so I can get more like 1 month of data.
I have included photos of the sensor and board for reference.
Thanks for the link... funny enough I had just stumbled on that link. Also found a some options from Melexis.
Couple of questions... I have almost no experience in component terminology and datasheets.
What am I looking for on the data sheets to tell me what the current draw will be (Supply Current?)
Will an "Omni-polar" component work if the original was "Bi-Polar"?
What considerations do I need to be aware of with respect to output/signal voltage? Is there a threshold the Atmega chips need to be able to register?