Questions tagged [sensors]
A sensor (also called detector) is a converter that measures a physical quantity and converts it into a signal which can be read by an observer or by an (today mostly electronic) instrument.
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Visible light sensors for line follower
I'm making a second version of my line follower robot and I'm thinking what are the line sensors going to look like.
In the previous version I've successfully used IR LEDs and IR phototransistors, ...
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Why won't my PID line follower work?
I'm trying to implement a PID based line follower. The robot has 2 line sensors with ranges from 0-200, with 0 being black and 200 being white. I'm trying to follow a black line.
I'm struggling to ...
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Depth sensing for a pick-and-place robot
I am supposed to design a pick-and-place robot. I have a prismatic joint to go down to a particular depth to pick an object which is located in 2D using computer vision. What is the recommended way to ...
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Scan an Auditorium, Count People, and Display Open Seats [closed]
I'm looking for any recommended approaches to be able to digitally process a room full people, like an auditorium or a movie theater and output the following information:
How many people are in the ...
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Simple sensor to detect motion of inanimate objects
This is for a high school project that I'm doing. The sensor should be able to detect the movement of a moving inanimate object and convert into electrical energy, and be fairly cheap to buy.
I have ...
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How to use registration inputs on a Kinetix servo?
I am working with a Kinetix 5500 servo drive with a rotational actuator to locate a keyway on a shaft. The shaft will rotate, and a laser sensor will detect the height difference when the keyway ...
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Is there a portable and accurate sensor to measure the position of the hand relative to the body?
My team has been working on a wearable glove to capture data about hand movements, and use it as a human-computer interface for a variety of applications. One of the major applications is the ...
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IR distance sensor
I am trying to make a IR distance sensor. I have seen this online. My goal however is to see the distance between a IR transmitter and my IR sensor. In the example above he uses the IR led's ambient ...
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Ways to estimate the drift rate of the gyrometer
I found not so much literature to the topic, this is why I ask here.
Does someone know some ways to estimate the drift rate of the gyrometer.
I was thinking about basically two approaches.
One would ...
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Measuring angular displacement using the TI-SensorTag
I've looked around but can't find the answer, to what I hope is a simple question. I'm working with a TI-SensorTag, and I want to be able measure the rotation around the unit's Z-axis. Basically I ...
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ROVER 5 with 2 encoders help
am 2 weeks old to arduino projects..i had been using timing all this while to control my rover...now, i wanted to shift to using encoders..am facing quite some problems..am using arduino uno and a two ...
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Shallow underwater wireless sensor network [closed]
I need to make shallow (max 2m) underwater wireless sensor network. Data payload is about 10kB/s. I know that VLF band (~3-30kHz)could be the best solutions for that, but cause of time-to-market I ...
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Glasses with eye sensors
Someone could tell me if there are wearable devices such as glasses, with sensors that can detect eye movement?
In particular, I would need a device like google glass, having a sensor or a camera ...
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Sensor that will produce a sinusoid phase locked to a high RPM Shaft
Is there a sensor that will produce a sinusoidal signal phase locked to a high RPM (7000 RPM) shaft? I am attempting to build a coaxial helicopter based on the architecture described in this paper ...
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Where do roboticists look for used sensors/hardware? [closed]
I recently built a self-driving vehicle-type robot for a competition, and am looking to sell sensors (GPS, INS, etc.) used in order to have money for the next project. Is ebay where people tend to go ...
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How are color sensors used for line following?
I have to build a line following robot that will be able to detect a selected colored line on the floor and start following it.
How do color sensors do this after detecting the specific colored line?
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problem with simulated sensor in Matlab?
I'm simulating a sensor in 3D. The sensor should determine ($p, \theta, \phi$) from the origin where $\theta$ is the rotation about z-axis and $\phi$ is the rotation about x-axis. The sensor is given ...
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How to choose WiFi signal strength detecting sensors
We want to create robot that will localize itself by the signals of wifi routers.
Which sensors should we buy to detect strength of 3 WiFi signal?
Which of following is necessary for us?
http://www....
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Implement a new custom sensor in gazebo ignition
I'm trying to implement a new custom sensor in gazebo ignition, more specifically I want to implement a light sensor that will simply output a light value based on the distance between the sensor and ...
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How to simulate a radar(mmWave) sensor in gazebo?
I am trying to simulate mmWave radar sensor in ignition gazebo fortress. I am looking for a plugin for radar sensor. Can anyone guide me further?
I am working on a ros2 Humble on Ubuntu 22.04 and ...
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How to detect transparent objects (glass, plastic, etc.) with LiDAR (or what sensors can)?
I am wanting to create a robot that can pick up trash. I am planning on taking a picture of the trash, using an ai i've trained to detect the trash, using opencv to find the contour of the trash, and ...
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Connecting MTi-G-710 sensor to PC using RS422 to USB adapter
I tried to connect an MTi-G-710 sensor to PC using this RS422 to USB adapter. I connected the wires from the sensor directly to the terminal block, using this wire color guide.
When I connected it to ...
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Using an optical mouse sensor for odometry?
I'm trying to use a mouse sensor for odometry on my robot. Most datasheets I have found use SPI or SDIO interfaces for communicating but my microcontroller would require an I2C interface. Would it be ...
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Gazebo Garden plugin and nested models?
I have a problem that I'm not able to solve with Gazebo Garden.
I wrote a System plugin that handles a stereo camera, I need a plugin to interface the simulator with our SDK.
Differently from Gazebo ...
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Tips for designing an optical eight channel read head for a DIY rotary encoder
I'm thinking of using the gray code optical encoder disc design described at TeX Stack Exchange to sense the base rotation of a robot arm. Being able to vary the disc to suit the physical aspects of ...
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Attaching an optical rotary encoder to a bicycle wheel
I am currently working on a Sixth-Form experimental physics project, the end goal of which is to build a simplified Malkus Waterwheel, and to see whether chaotic synchronization can be achieved ...
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Data gathering and selling [closed]
a friend of mine is building various Robots with different structures, sensors, limbs executing different tasks. He gathers data from all sensors etc regarding technical and scientific range of ...
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How to set "fast mode" in low cost DRO
I have this cheap DRO from Amazon/China
https://www.amazon.com/gp/product/B00E7XFF5Q/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1
I'm able to read the values out of it using a small FPGA.
The ...
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Barometer altitude calculation
I want to calculate altitude using a barometer which is mounted in the proximity of a number of components which get quite hot and raise the localised temperature. The barometric pressure equation is ...
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Is This A Colour Sensor?
Hi Iam new to robotics and stack exchange and Iam 13 years old,this is a IR sensor, can you tell me that is this thing have a colour sensor on it?
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Tracking object in realtime using depth image stream from a RGBD camera
I have an Intel RealSense camera which can stream RGB and depth image. Using those information I want to track an object moving on a table top. More specifically, I want to know position $(x,y)$ and ...
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Detecting and counting the number of junctions
So I am making a robot which is to follow a line. The field has both +(junctions) as well(by the intersection of two lights). I am yet to figure out what exactly is the best way to track the number of ...
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Calculation of accuracy during dead reckoning based for sensor selection [duplicate]
I am working on a problem in robot tracking, where our main position sensor will be unavailable for up to a second due to its low frequency.
That's why we would need to track its 2D-movements (x&y-...
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Pressure Sensors for Robot Bumper
I'm building an omni-directional robot base and want to add some kind of low-level obstacle detection. The complete robot will have LIDAR and camera for navigation but I'd like to add something at the ...
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Measuring torque of Vex gear shaft - highest accuracy for lowest price [closed]
I am seeking to collect data for my IB Physics IA (internal assessment). My question seeks to establish the relationship between speed and torque by adjusting gear ratios. (I am aware that gear ratios ...
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What is the difference between "Sharp Distance Sensors" and "Diffuse Type Sensors" and others?
Searching online I have stumbled across following type of sensors that claim to measure distance. I don't quite understand the difference between them and their pros and cons. Would appreciate if ...
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Kalman filter localisation equations
I am doing mobile robot localisation as a project. Now I stuck in obtaining the equations of EKF localisation. My robot moves straight for 10 seconds parallel to x-axis and robot equipped with 2 ...
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How can there be a difference in quaternion values of two points taken from sensors where the orientation is exactly same?
I have two situations-
A) One, the body with sensor embedded in it kept at rest.
B) Second, the body is at rest for 10 secs, then undergoes some movement randomly and comes back to the exact ...
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Robot end effector sensor query [closed]
I am currently in the process of implementing a Fanuc robotic arm at our company and have just received the pneumatic gripper end effector to go on the end of the arm (which we won't have for about a ...
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How to precisely land a copter in a defined place? [closed]
Say, I have a flat square landing place for a copter, made of e.g. aluminium or plastic, with marks on it making a square, looking like this from the top:
...
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How can I make a quadcopter avoid obstacles using infrared?
I have a quadcopter built, and I need to be able to make it to autonomously follow a route and avoid obstacles where possible.
My general plan is to have an array of sensors on a pre-defined "front". ...
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Is it possible for a robot to navigate through predefined coordinates?
I am a total newbie in robotics so please bare with me.
I have a school project where my team has to design a robot that is capable of picking up 3 golf balls in different sizes at predefined ...
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Detect human in proximity? [closed]
I'm looking for ways to detect human presense behind walls in close proximity (around 10 feet) in whatever way possible! Problem is I can't code! (I hope it's ok I'm posting here.)
I know there are ...
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what is the easiest method to plot a temperature in my pc? [closed]
After a lot of learning, I'm launching a reballing business and I feel the need to have a realtime plot of the temperatures involved (ideally 3 or 4) and I have an arduino uno and a few K type ...
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control a robot with pymorse on MORSE simulator question
I am new to Morse and robotics.
This code control the robot by giving the linear and angular velocity.
This is the scene description
...
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Can active sensor data be fed into an Autodesk Inventor Simulation?
I'd like to drive the position of various components within a virtual assembly based on sensor data being collected in real time from an external device. Does Inventor support such a setup?
The goal ...
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computer aided RC airplane combat
http://www.youtube.com/watch?v=4Vh_R1NlmX0 is from 2011 SWARM and shows RC aircraft or combat wings trying to hit each other in the air.
Scoring a hit is pretty rare, and I'd like to increase a ...
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1 cm accuracy radio rangefinder?
I need to track a point in space. The point is less than 2 m away, it has to be passive, no batteries, and no charging.
I don't always have a line of sight. I need to pinpoint it to about a ...
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Laser / photosensor pair or similar [closed]
I'm looking for a laser / photosensor pair (or product of similar function) for detecting when a beam is interrupted (no more than 3ft apart, probably more like 1ft).
I'd like these to run off of 5V, ...
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How to make a motion sensor circuit, that can communicate with my LAN? [closed]
I'm a newbie to Electronics/ Robotics, but I love to do it as a hobby.
So I want to build a circuit (a really small in size would be much better) with a motion sensor that can communicate data (...
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