Questions tagged [distance]

I'm trying to make a sensor to detect that a person is within 50cm to trigger a function. But when I use the HR-SR04 sensor, it works accurately on flat surfaces (e.g. walls, books) with a margin of error around 5cm, but not on uneven surfaces (e.g.…

I am planning to make a human following robot which requires two IR proximity sensors. I already have two TCRT5000 sensor. Can I use it instead of it?

I have a toy car and I want to measure the coordinates/location of that car in my house. It need to bee high precision equipment so GPS won't work here. My precision requriments is 5+- cm and the distance is like 10-20 meters as maximum raduis. What…