Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [position]

The tag has no usage guidance.

0
votes
0answers
41 views

Can you identify this type of switch? Need to replace it

This is hopefully just a simple one to fill in my inexperience. I have a busted rotary switch that I'm trying to replace and I feel like I cannot find one for the life of me, can you tell me what this ...
4
votes
3answers
145 views

Detect drones passing through hula-hops

I host some drone races at times and I make gates with hula-hops. I fit some led stripes in there and they glow nicely. We ONLY run micro drones, F36, tinny whoop and those. And mostly indoors (...
1
vote
0answers
127 views

Measure relative position between two IMUs

I'm trying to create a system where I need to measure the relative orientation of the edge of the arm with respect to its base: The apparatus will be like in the diagram above. To measure the ...
2
votes
1answer
54 views

IR emmiter and reciever layouts for custom sensor

I'm having a hard time designing a PCB for a sensor array that need to detect if there is a small reflective object (3-20 mm section) in the way. That object can slowly rotate around a shaft. I have ...
0
votes
1answer
51 views

How to move a magnet to a specific coordinate on a board

I was just reading about Claude Shannon's famous maze-solving mouse, Theseus, which used a movable magnet under the maze to draw the mouse in a given direction. I'd like to play around with this idea. ...
0
votes
0answers
46 views

Sensor that identifies the number of objects in a stack of casino chips

I am not a technical person so please bare with me and don't laugh of my technical descriptions or wording. I'm working on a new invention that requires a sensor to identify the number and position of ...
3
votes
2answers
695 views

What is the main reason for using speed feedback in a motor positioning control system?

This question is not to solve a particular problem but rather one of principle to understand the main reason a designer would want to include speed feedback in a motor controlled positioning system. ...
0
votes
1answer
79 views

Voltage regulator position

Hello if unregulated power supply (transformer, bridge and main caps) is 30 cm away from the circuit to feed, is it better to put the voltage regulator close to the circuit (long input and short ...
-1
votes
1answer
95 views

How can we achieve position accuracy with simple worm gear box. [closed]

I am also proposing to use simple 40:1 ratio worm gear box with Input servo motor. I am having a dial of 1600mm diameter on output of the gear box which will rotate only in clockwise direction at max ...
1
vote
3answers
298 views

SSD1306 I2C: Draw only changes works however on wrong position, how to set position (command)?

I create an OLED display class for the SSD1306 and how it works is pretty straight forward. The display is buffered (offscreen method) and at performing an update, it 'dumps' the buffer to the display ...
0
votes
1answer
97 views

acceleration sensor gives wrong values

I try to measure distances with the 3 axis accelerometer that is part of the lsm9ds1. therefore i measure the acceleration in x-axis and y-axis every 5ms and double integrate it over the time. I can ...
0
votes
1answer
1k views

Measuring the angle to an object using IR sensors?

I would like to be able to use IR emitter/receivers to measure the ANGLE to an object. As far as I am aware this is how the Sharp IR distance sensors work, by using triangulation to measure the angle ...
6
votes
3answers
2k views

In theory, is the position derived from accelerometer absolute?

I recently found multiple research papers that say that in theory double integral of accelerometer data gives a position of the device. Does that refer to absolute position (like the one given by a ...
0
votes
2answers
127 views

Tracking position of juggling balls

I am working on a performance art project in which I want to track the position of juggling balls as they are thrown in the air. The idea is to output a sonification of the ball's position in the air ...
1
vote
1answer
63 views

Determening the location of a ball contacting a surface

I'm a student currently working on a project. I have two objects, one of which is a plastic ball. The other is a rectangle which is being hit with said ball. My goal is to detect a position of a hit. ...
0
votes
1answer
181 views

Maintaining fixed shaft position of BLDC/PMSM

I intend to control the position and speed of a BLDC motor (still to be selected) using field oriented control (FOC) and an Encoder to determine shaft position and speed. From what I understand from ...
0
votes
1answer
135 views

Speed and position controle of a BLDC motor at the same time

I want to know if it is physically possible for a BLDC motor to be controlled in speed and position at the same time. Let me clarify : while the rotor is spinning (speed control), is it possible to ...
3
votes
5answers
2k views

Using a potentiometer to replace an absolute optical encoder

I am trying to replace a rotary absolute optical encoder (single turn). The resolution of the encoder is 13 bits (8191). The reason for the replacement is to reduce the cost. My approach is to get a ...
0
votes
1answer
92 views

Precision positioning system

I'm looking for a sensor that can track its own position in 3D with an absolute accuracy of around 0.5inch over a 50-100ft area. I think this is better than what GPS or inertial tracking can ...
3
votes
2answers
432 views

How to locate my cats in my house? [closed]

I have two cats and want to track in which of the 6 rooms of my flat (about 96 square meters) they currently are. Later I would like to trigger an alarm if they get into a "forbidden" room. The cats ...
1
vote
3answers
160 views

How accurate is a single GPS at detecting distance traveled?

I read that consumer grade GPS is accurate 5-10 meters at resolving global positioning coordinates. However, my question is how accurate is consumer grade GPS at detecting distance traveled. For ...
0
votes
1answer
624 views

Triangulation Vibration Sensor Impact Detection Position

I am working on a project to detect the position of an impact using three vibration sensors each one of them linked to a micro-controller(in my case STM32F4) . Using ADC and UART ,I can plot with a ...
1
vote
4answers
696 views

sensor to detect rope position, as it nears the end of the line retreval

I have built a winch for a 4wd, to race with. I would like suggestions on a sensor to detect rope position as it nears the end of the line retrieval. Not at the drum end, as that may vary. Something ...
0
votes
1answer
48 views

static position and orientation sensing

I have an application to sense magnetic north and position. GPS works well for position but cannot determine orientation without spinning the object 3 times. My application is stationary and I cannot ...
0
votes
2answers
72 views

Best Hardware for Accurate Point Tracking System

Here is what I am trying to accomplish: In the middle of a room, I have a mechanism with a laser diode mounted on it that can be moved in all axis by a motorized pan/tilt head type device. This ...
3
votes
1answer
2k views

Determining an aproximate position through triangulation

Disclaimer: I'm relatively new to electronics (although not to programming) so please excuse my ignorance. First of all I should state that I'm aware there are already multiple, well answered posts ...
0
votes
1answer
586 views

Does position error from accelerometer still build up quadratically when using Kalman filtering?

I want to implement an inertial navigation system that uses a basic IMU for indoor position tracking. From all the things I've read you need to assist the IMU with something like GPS or other means of ...
1
vote
4answers
311 views

Best methods for long term position tracking?

I am in the beginning stages of development for a project where I need to continuously track the position of an object for long amounts of time. The object will not move very much, but when it does I ...
0
votes
1answer
75 views

potentiometric position sensor

I would like to wire my position sensor (Datasheet) into Arduino. I plan to connect it with Arduino 5V supply and then read analog input values. It is potentiometric sensor and has 3 wires. After ...
0
votes
1answer
2k views

outdoor ultra sound positioning system robotic lawn mower [duplicate]

I have a dream to build robotic lawn mower that uses a positioning system, so that can cut grass once and effective. Building the robotic lawn mower is not a problem, but the navigation system is, so ...
1
vote
2answers
390 views

Recording motion/movement sequence efficiently & accurately

We have a motion platform (camera - pan & tilt) that is controlled by a user using a joystick (so the demand inputs are pan & tilt velocities). The platform itself uses stepper motors, so we ...
15
votes
4answers
2k views

What are my options for detecting the position of a small moving metal object?

This is an airgun pellet trap: I fire small metal pellets at it (4.5mm = .177" in diameter) at up to 120 m/s = 390 fps. What are my options for detecting the X / Y position at which it enters the ...
0
votes
1answer
3k views

Feasability of an Arduino indoor positioning system using BLE

Our project is to guide a blind person in a known environment (here it's an exposition hall), and we need to have a precise way of figuring out where the user is. Our current solution is to use ...
1
vote
1answer
220 views

Reading a resolver sensor with a long cable

I am trying to read a resolver sensor attached to a stepper motor through a long cable (500 meters). More specifically with a resolver to digital converter. However I get an error respect to the ...
2
votes
0answers
333 views

what is an affordable indoor 3D positioning sensor setup?

I have a question regarding a problem that seems easy, but after already doing some internet searches, seems not to be that easy to solve. I have a non-moving test setup in a large room where I have ...
1
vote
1answer
62 views

can I wire a ceiling fan to a 4 DP toggle switch?

I want to re-purpose a ceiling fan motor and would like to have each of the three speeds available on their own switch (or position on a toggle). Is this possible? and if so how should I go about this?...
2
votes
3answers
604 views

Violin bow position tracking with SMD LEDs and photoresistors

Objective: Marking labels indicating the positions of the violin bow on an acoustic signal, for example, a single musical note played by a full-length bow. The following video shows the example I am ...
2
votes
2answers
662 views

How can I achieve cm accuracy for x,y,z outdoors positioning

How can I achieve cm or less accuracy for x,y,z outdoor positioning contained inside a 100 meter cube (bigger the better but this is minimum). I do not care if I need external beacons/sensors or ...
0
votes
1answer
843 views

Relative position of three sensors [closed]

I am mechanical engineer with very little knowledge of electrical engineering. I am working on a project where I need two have two sensors, one on each shoe to track the motion of the feet, and a ...
6
votes
3answers
8k views

GPS Antenna | When is an Active Antenna really Necessary?

Many vendors provide positioning modules that support active antennas as well as ones that don't. I am using 4 positioning modules out of which 3 of them support active antennas and the other , CC4000 ...
1
vote
2answers
270 views

Suggestion regarding position sensing in a motor operated shaft

I'm driving an 24V DC motor through an H-Bridge back and forth, in order to position a part of my mechanical app. The motor actuates a shaft which has the said part moving according to the shaft's ...
0
votes
2answers
2k views

Building an RSSI map for an indoor positioning system

As I study so far, Indoor positioning mechanisms are built with two approaches: Trilateration, triangulation: Directly calculate/compute position with signal fading/RSII data which mobile device ...
3
votes
1answer
430 views

Speed and Position Control for high-volt Elektro Motor with AVR

Is there anything that one can purchase to control speed and position of a high voltage electro motor? I am quite a bit of a noob at this but I could think of a circuit using photo-sensors or hal-...
2
votes
1answer
442 views

How do I use the measurements from the datasheet to create a footprint?

I'm trying to make a footprint for a MPU-6050 6-axis gyroscope and accelerometer. I've added the first 12 pins (out of 24), but now I don't know how to proceed. PCB dimensions http://oi58.tinypic....
2
votes
4answers
1k views

Position tracking system for frisbee

I'm trying to build a smart frisbee for use in Ultimate. I'd like to be able to track the position of the frisbee in a playing field with pretty good accuracy (within ~2ft). GPS is a possibility, but ...
0
votes
3answers
3k views

3D accurate position sensing of a point

I want to sense the 3D position of an object with respect to some fixed reference. The position of the point will be within a meter of the reference. The accuracy should be very high, possibly within ...
1
vote
1answer
574 views

Detecting position — Hall effect sensor?

I have an extruder that is producing a molten plastic filament that cools after a brief while (2-3 seconds). The plastic stream needs to be a consistent diameter, and one method of doing this is to ...