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0
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1answer
43 views

What's the best method of measuring displacement and speed without resorting to GPS?

Is it possible to determine the displacement, speed and acceleration of someone while running, by using methods like dead reckoning, sensor fusion or other, and sensors like accelerometers, ...
0
votes
1answer
73 views

Can ultrasound be used to determine distance without line of sight?

Is it possible to determine the distance between 2 devices (using phase shift, time of flight or any other method) without line of sight? In the affirmative case what's the precision and accuracy for ...
0
votes
1answer
34 views

Precise Tracking of Coordinates across small 2d plane Wirelessly [duplicate]

First off, I'd like to say my background is definitely more in the realm of software than hardware so I might be a bit of a beginner about certain things.. That being said, I have this idea that ...
2
votes
2answers
79 views

Measuring the distance between two points electrically

I am trying to build a real time location system(RTLS). I have a arena of 10 x 10 meters in dimension. And would like to track the position of the object moving in the arena with a precision of within ...
0
votes
2answers
72 views

Is there a sensor capable of measuring distance?

I'm looking for a simple way to measure the distance between 2 devices, basically 1 device will be placed in each leg and one of them will measure the leg stride, at any moment, by calculating the ...
0
votes
1answer
42 views

Measuring Stride distance wirelessly

I'm trying to fit two sensors in a shoe each (such that each shoe has one sensor). their purpose being to calculate the stride length of a person, as a person takes a stride, the distance between two ...
1
vote
1answer
51 views

Could a barcode scanner be used to get surface depth information?

(if tl;dr, go to the part where it says "actual question") this is probably a very obscure question, but: I'm working on a rather complex art installation with computer-generated sculptures, and I'm ...
1
vote
1answer
40 views

Is there any repeater with power amplifier?

I installed sensor module connected with controller. Those are connected with 6-wire cable, and it consists of 2-wire power(5V & GND), 4-wire signals(0~5V analog). First time, I thought distance ...
1
vote
1answer
54 views

How can I implement a proportional error control scheme with op amps?

So I have an IR distance sensor that I would like to use to keep two wheels (with DC motors) travelling parallel to the wall beside them. I have these proportional error control formulae to keep the ...
0
votes
0answers
32 views

How does the impedance of the source effect the positive sequence impedance measurements of distance relays?

How does the impedance of the source effect the positive sequence measurements of distance relays in relation to power system protection? I wrote that increasing the source impedance decreases the ...
0
votes
4answers
81 views

Local positioning system

Let me start by stating that I am a student with very little experience so I am starting at square one, so please bear with me. Requirements I am looking to create a local positioning system between ...
4
votes
1answer
80 views

How can I determine a maximum run length for CANbus?

I'm using CANbus to communicate between two circuit boards. 120 ohm termination resistors on either end. Transceivers are MCP2561 and ISO1050. Bit rate is in the hundreds of kilobits/second. Medium is ...
1
vote
4answers
266 views

How do I determine the distance from a magnet using Magnetometer?

I have a triple-axis magnetometer and a magnet, and I am trying to calculate the relative position of the magnet from the magnetometer. The magnetometer outputs the strength of any fields detected in ...
0
votes
1answer
76 views

Distance confusion about Shuncom SZ05-ADV ZigBee module

I ordered this module looking at the datasheet that it has a range of 2000m LOS distance. But now when I test it, I can receive signal from a maximum of 50m distance! It sends 2.4GHz signals. As far I ...
2
votes
2answers
121 views

Sensoring gokart pedals?

I want to make a ATMega-based module to record several parameters of a go-kart while driving - pedals position, speed of the wheels and g-forces. I have a problem with choosing how to measure gas and ...
5
votes
3answers
487 views

Miniature wireless distance sensor

I am novice in electronics, so please bear with me. I am searching for a small distance sensor (as small as possible) that I can use to measure a distance between 0 and 30 cm precisely (precision ...
0
votes
1answer
305 views

How can the signal strength of an RF signal be measured?

I am a graduating ECE student and we are currently making our project study. Our group would like to make a proximity indicator. Initially, we planned to use Radio Frequency for this. The idea was to ...
5
votes
2answers
894 views

How the time is converted into distance by multiplying it with 17,000

The general formula for Distance to Time conversion or vice versa is, Velocity = Distance / Time I have been implementing HCSR04 Distance Sensor, Datasheet: ...
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votes
1answer
222 views

Trying to figure out the distance my computer is from my Bluetooth peripheral via RSSI. Is it possible?

I'm having a great deal of trouble figuring it out. I know it's far from exact, but I would like to have a reasonable estimate in meters. Right now my device is reporting back to my the RSSI value ...
2
votes
1answer
361 views

How to collimate ultrasonc beam from proximity sensor HC-SR04 in measurng distances of 3 meters?

I am currently doing a project for bicycle overtaking safety in which an approaching vehicle or cycle from behind is found through ultrasonic sensor and indication is given to the rider. I had a ...
5
votes
1answer
126 views

Powering a modem over extreme distance (~2k feet)

We live in a rural area and have about a 2000 foot run from the end of our driveway to our house. The cable company wanted quite a bit of money to run internet to our house, but there's a drop at the ...
2
votes
2answers
418 views

Arduino Uno and Sonar Sensor - how long can the wire be before performance suffers?

I am setting up an Arduino Uno with a sonar sensor from Maxbotix (http://www.maxbotix.com/Ultrasonic_Sensors/MB7360.htm). The sensor will be powered directly from the Arduino (5V). The sensor needs ...
12
votes
3answers
2k views

Can an optical mouse be used to measure distance down to 1-10μm?

I am working on a home-built CNC machine that uses stepper motors and MXL timing belt for the machine movement. Because I'm using steppers, there is no feedback to the controller about the actual ...
0
votes
0answers
90 views

Measuring distance of two objects in short range

Is there a solution for measuring distances of two object in short range? Max 1 meter of distance needed. Accuracy is not an issue e.g. accuracy of 1-2cm would be good enough. Solution should of ...
9
votes
4answers
696 views

Why wavelength is not measured with a unit of time?

While learning Fourier transforms, I have this little doubt about wavelength. Why is that wavelength for a sine wave, or any other wave, is measured with a unit of distance? If it travels w.r.t. ...
7
votes
2answers
214 views

real time short distance range finder and visual output

I'm badly visually impared in one eye and find judging distances while walking downhill hard. My goal is to create a real time range finder than can display the distance of the next step(s) while at ...
0
votes
1answer
273 views

How to measure distance/position accurately?

I am wondering if there is a way to measure distance between two movable points (e.g., the first point is on the hand and the second point is on the back of the human body). I was looking at ...
6
votes
3answers
171 views

How can I electronically measure tilt/compression of a pliers or alligator-clip?

I would like to electronically measure the width (really the compression/extension) to which an object's constituent blades have been stretched. Or alternatively, I could measure some other parameter ...
0
votes
1answer
392 views

Problem with Arduino and 2 Sharp IR sensors

I have 1 Arduino and 2 IR Sharp GP2Y0A02YK0F proximity sensors, I connected 1 sensor, with mounted capacitors between GND and VCC (100nf, 10000nf) Everything is fine, I have good values, but when I ...
1
vote
2answers
128 views

Recommended Sensor? Distance - High Heat & Dusty

I'm after a sensor and I'm wondering what would be the best type for the following. Requirements - Accurately measure in the 5-10mm distance range, +/- 1mm. Sense small undulations in a surface ...
0
votes
1answer
120 views

Looking for a miniature low-power range detector for a robot

Sorry if I am not following guidelines. I am a noob trying to build a Robot for learning purposes - I want to play with navigation algorithms using particular measurements - distance to the obstacle ...
2
votes
3answers
319 views

Wireless communications for distance estimation (RFID perhaps?)

What I want to do it is measure the distance between two points/ devices which are constantly moving apart or together. The value for distance isn't really required I'd just be looking to have an ...
2
votes
4answers
2k views

Measuring Signal Strength with a RF Circuit

Note: I'm primarly a 4th year Computer Science student, but I have also interest in electronics but I have very limited knowlege. Is it possible to measure the signal quality or level of a RF ...
0
votes
1answer
316 views

Monitoring distance between two moving objects

For a new product, I'd like some help in understanding what technology would be best for creating a wireless connection between two moving devices and having them constantly monitor the distance ...
0
votes
2answers
404 views

SR04 As only Transmitter and Receiver

I have taken up a "follow me" robot as my course project ,i am taking the following approach: Use one SR04 ultrasonic transducer only as transmitter which will be with me. Another SR04 module only ...
1
vote
1answer
120 views

Tracking Flight of a Bee or a Wasp

I am planning to build a system that can track and present for me a path for the route a Bee or a Wasp has flown. What I am looking for is the tiny device can be placed on the back of an insect. Does ...
7
votes
1answer
2k views

Best Approach for Long-Distance Sensors

The Project So I have a project idea. (groan) I want to monitor multiple motion and/or ultrasonic sensors to build a simple proximity alert. I want to "deploy" sensors at key points along the ...
7
votes
3answers
825 views

What is the most accurate and cheap way to figure out the distance between two points electronically?

For a project, I have an idea that involves getting a position for a person throughout a house. I am trying to figure out someway of triangulating the person's position, by having a bunch of little ...
2
votes
4answers
428 views

Tracking pen within whiteboard surface

(Question in response to the comments.) I have a fixed flat white rectangular whiteboard of dimensions 1 meter by 0.5 meter and pen. I want to track the position of the tip of the pen within the ...
6
votes
2answers
696 views

Proximity sensor for height from snow covered ground

I will preface this by saying that I am a hobbyist not an engineer, which is probably why I even have to ask this question. Like the title says I want to know what type of sensor I can use to get the ...
2
votes
1answer
107 views

Measuring distance at angle

I have a question, I want to measure a distance from an object of unknown shape and material, and I want to measure it under different angles, I want to measure a distance to just one specific point ...
9
votes
4answers
888 views

Methods to accurately move an object across a 2-D plane

This is the opposite/complement of my previous question, which concerned measuring the precise position of an object as it is moved/drawn by someone over a short duration. Assuming I use one of ...
12
votes
7answers
3k views

Ideas to measure 2D position of an object constrained to X-Y plane

I am working on a project, and an aspect has come up where I would like to measure (track continuously) the X and Y position of an object across a 2D plane. The object is moved by a person, with the ...
4
votes
2answers
1k views

How do I properly use Sharp GP2Y0A21YK0F sensor?

I've recently obtained Sharp GP2Y0A21YK0F IR distance sensor and I'm not sure how to make a proper circuit for output measurement, since I'm getting lots of noise. The only thing datasheet mentions is ...
4
votes
3answers
713 views

Detecting the placement of my finger on an invisible grid

Yes, a similar question was asked before, but mine is different. Let me explain what I am thinking of. Suppose I have an invisible 3 x 3 grid on my desk, is there any way I can detect which square I ...
2
votes
2answers
132 views

Distance measurement to liquid plastic

What's the best way to find out how much plastic I got in a container? Characteristics: It's slimey It's liquid It's sticky Its electrical resistance is very very high It's very warm(250 degrees ...
0
votes
1answer
109 views

Arduino and Display in different rooms, possible?

I only wondering which four pins I have to connect for the LCD4884 from SainSmart, because I want to have Arduino and the LCD in different rooms. Is it possible?
3
votes
4answers
1k views

How to mesure distance between two objects?

I have some idea about make something and make some small production. Idea is to have something that measure distance between two objects. First one called A size doesn't matter, can be connected to ...
6
votes
2answers
2k views

I2C extender or repeater?

I am developing a dolly-pan-tilt system, where an Arduino is connected via I2C to three independent rotary encoders for positioning. Having read a few posts on this site and elsewhere, I am aware that ...
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3answers
703 views

Using Mic from 10 feet away for voice recognition

I'm trying to use a mic from 10 feet away. Background: for my senior project I would like to talk to a computer to run scripts, but I want to talk to the mic throughout the house. So I need to be ...