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2
votes
2answers
66 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
61 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
27 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
47 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
32 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
17 views

Keeping two wheeled wall following robot straight [migrated]

I have a two-wheeled (two DC motors) robot that needs to follow the wall beside the robot. The issue is that the DC motors spin at different rates (because they are not identical, of course), so the ...
0
votes
0answers
31 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
76 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
76 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 ...
0
votes
4answers
190 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
62 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
115 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
2answers
412 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
283 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
824 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: ...
-1
votes
1answer
215 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
323 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
123 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
366 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
88 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
677 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
208 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
265 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
169 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
370 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
123 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
114 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
279 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
308 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
353 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
119 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
1k 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
799 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
397 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
643 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
106 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
851 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
700 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 ...
1
vote
3answers
677 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 ...
5
votes
5answers
9k views

Options for short range distance determination between two objects

I have a project idea in mind, but it involves calculating the distance between two people. I've looked into Bluetooth, RFID, and NFC (unsure about this one), but none appear to offer the accuracy I ...
0
votes
2answers
2k views

Distance between 2 arduino's using rf links

I currently have a setup where I send a char using a Tx of 434MHz and an Uno to a Mega with a Rx. The Mega counts how many times it receives the char and then if it falls below a certain number it ...