Hi all
I need to measure the distance of a fluid level and i was planned to use sr-04 ultrasonic sensor.
The problem is that i want to know how accurate the sensor reads.
which is the least measure i can get in sr-04? and if there exist another sensor which will give accurate reading, please also suggest.
sravansunilt:
which is the least measure i can get in sr-04? and if there exist another sensor which will give accurate reading, please also suggest.
Depends on what model of SR-04 module your using but the Sparkfun one says about 2cm to 400cm.
To suggest another type of sensor would require you to tell us what distance range your expecting to measure and what medium your trying to measure. E.G. An ultrasonic device can measure water level but an IR sensor may have difficulty because it will shine through the water.
Riva:
Depends on what model of SR-04 module your using but the Sparkfun one says about 2cm to 400cm.
To suggest another type of sensor would require you to tell us what distance range your expecting to measure and what medium your trying to measure. E.G. An ultrasonic device can measure water level but an IR sensor may have difficulty because it will shine through the water.
I would like to measure the fluid level in a fuel tank. So the maximum i need to measure will be in between 2cm-50cm. Is there any other way i can hook this up?
sravansunilt:
I would like to measure the fluid level in a fuel tank. So the maximum i need to measure will be in between 2cm-50cm. Is there any other way i can hook this up?
The SR-04 will cover the range you need but as your measuring fuel then I don't know how vapours might effect the sensor or what other problems you might run into if the sensor is not intrinsically safe to use in a fuel tank.
Riva:
The SR-04 will cover the range you need but as your measuring fuel then I don't know how vapours might effect the sensor or what other problems you might run into if the sensor is not intrinsically safe to use in a fuel tank.
I'm working on the insulation. Anyway, can u also prefer me any reference on creating an android app which will do the following.
1.Control an led
2.show the value of the sensor read using sr-04
I'm planning to use bluetooth module, but no where i could find an easy way or a source of an app that could communicate to the arduino. (Sorry, i never worked in android sdk, so im purely a newbie to android)