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If everything were ideal, then your thinking is correct. In practice, though, there are many accumulated errors both in the sensors and in the real vs modelled Jacobian. So if what you care about most is force applied at the end-effector then it is much more accurate to have a sensor located at the end effector. Unfortunately that would also add weight, and ...


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This ruler has a resolution of 1 inch: It has a resolution of 1 inch because the only readings on the ruler are 0, 1, 2, or 3 inches. It can't measure anything smaller than an inch; it only measures inches. The ruler below has a resolution of a half-inch (0.5 inches). This ruler now has the capacity to measure 0, 0.5, 1.0, 1.5, ..., 3.5 inches. For ...


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As you're probably aware, the sensor solution you're looking for is pretty much a research subject in itself. There have been experiments using infrared time-of-flight cameras in murky water, and there are a few devices commercially available, but they're most certainly expensive and will require some engineering work to be adapted for a robotics application....


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1) Before I go into filter design itself, I want to know do I just use the raw data from sensor ' as it is ' and feed it into filter system ? Or Do i need to some sort of preprocessing on data for filter to use ? Both happens. In my applications(Visual-Inertial SLAM) we tend to just use the raw measurements. Note that the fusion algorithm(Kalman filters or ...


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Depending on the resolution you need, you could use a few multi-channel ADC chips. The TLC1543IN is a through-hole (would work in a breadboard) 10-bit 11-input ADC that communicates over SPI. Connect however many you need to the same SPI bus, and then wire each chip's CS (chip select) pin to a GPIO on the Xavier. Whenever a chip's CS line is held high (at ...


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You can use two infrared sensors one at the outside and one inside of the room. You can detect by using algorithm such as sensor outside= A sensor inside=B If AB then +1 person if BA then -1 person Use a counter program to determine people in room.


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I would somewhat disagree with the statement of lack of heterogenous systems. It is pretty common to always combine a camera sensor with an IMU. LIDAR + Camera has also been a pretty popular idea over the last few years. In regards to lack of more exotic sensors e.g Thermal, RADAR I would say it is due to the fact that the main purpose of SLAM is to build ...


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This isn't something that can just be answered. There are numerous ways to do this. Low Tech: You can go low tech with IR emitters and retroflective tape (or retroflectors) with IR sensors. High Tech: A more high-tech solution would be to utilize ultra-wide band transceivers. With UWB you can pinpoint your rovers in 3 dimensional space around each other. ...


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Have you thought about a linear encoder system (wiki)? I am not sure whether it is cheaper though.


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According to the SICK 300 driver in ROS, your endpoint data will be a sensor_msgs/LaserScan ROS message, which you could reach to its values such as ranges[] and intensities[] by the specified topic.


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The Danish line follower robot competition "DTU RoboCup" recommends using visible light sensors in their competition, since IR sensors have a hard time distinguishing the floor from the line. I've participated in this comepetition, and seen quite some IR-using robots getting confused and wandering off. My experience is that using visible light has one major ...


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The surface itself won't help you, so the question is if you have a border of objects next to the surface that your laser can see. You also don't have to fix your sensor to the robot. You can also mount a laserscanner on the glas surface (e.g. with some suction cups), locate the robot and then send it its position. (Same idea as a ground radar at an ...


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