Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week
This module is really easy to use, it is well made and the board is tiny enough to use it in a lot of applications. Range voltage of 3 to 6v allows this module to be connected in a wide range of projects. It has an enable input that can be controlled by a uC in order to reduce power consumption when it is not being used. The led indicating a detection is really usefull when testing.
The range is really poor, no more than 20 cm, even replacing the original adjusting potentiometers by others. The cost can be lower.
If you not need more than 20cm detection range, this is a good sensor to have to play with it.
If you have some electronic knowledge maybe you can built your own version with an increased detection range for less money. But if you don't need a higher detection distance and you just want something that works..this is a good choice
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