The tag has no wiki summary.

learn more… | top users | synonyms

0
votes
0answers
16 views

make hc-sr04 receive from another one

I have 3 ultrasonic Sensor (HC-SR04), i want to use one of them as transmitter, and the other as receiver, i want to let the first one send ultra Sonic waves and the other receive these waves from the ...
0
votes
0answers
29 views

How to connect ultrasonic distance sensor

I can't find any schematic example how to connect sensor which is used in cars as parking sensor to measure distance. (where is only one transducer sensor used as RX and TX) Can someone give me some ...
13
votes
4answers
645 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 ...
-1
votes
2answers
55 views

Non-line-of-sight distance approximation between trasmitter and receiver

I have one stationary object in a 2d plane (no z-axis). Let's say this stationary sphere is in the middle of a rectangular plane. I have another object in the same rectangular plane that is in motion ...
0
votes
0answers
22 views

Does higher clock speed equate to higher resolution of distance measurement using RF?

I am trying to create a simple measurement system using RF but have found only devices that have fairly large windows of accuracy (+/- 1ft is the best one I've found yet). If I want to measure the ...
5
votes
3answers
153 views

How do utilities calculate transmission lines impedance?

I'm an electrical engineering student getting into Transmission Circuit Analysis, and a question came out to me: How do utilities measure their transmission lines impedance? Do they use special ...
3
votes
0answers
93 views

Under water distance measurement

For a laboratory / field test, I'm looking for an easy solution to measure the soil surface elevation. The test runs a flow on a bed. When the erosion takes place the sediment concentration goes high ...
0
votes
2answers
60 views

Short distance detecting device

I'm looking for a sensor that would activate at a certain distance from the magnet or whatever would be signaling the location. The distance would range from 2-30cm and there would be obstacles ...
3
votes
2answers
268 views

Accelerometer double integration error

I wanted to use an accelerometer or IMU to measure speed and displacement over a period of about 1 minute or 400m. From this answer I found at stackoverflow, the error propagates at a rate of \$t^2\$ ...
0
votes
0answers
41 views

How to calculate distance between two objects(robots)?

If I have two soccer robots, and want each robot knows the distance between itself and it's teammate, how can I do that? (without external supervisor camera)
0
votes
2answers
36 views

Design options for tracking relative orientation of two elements

Background: I need a system of two discrete elements where one of the elements can continually track the distance and direction to the other, and their respective orientations. The specific ...
1
vote
1answer
75 views

How far can I wire a Sensor or an electrical component that it would work?

I had this doubt in my mind. I wanted to know the range till which a sensor could be attached so that it works. Suppose I have a setup, in which my main circuit is in a room and I have a PIR sensor or ...
0
votes
1answer
55 views

What type of equipment can I use to detect object 3d distance?

I would use a kinect but that's too cumbersome. I want to ditch the camera and the microphones leaving me with the "3d sensor" but what is this mystery sensor even made of? I would use some sort of ...
0
votes
1answer
51 views

how to safely increase the distance between ws2811 chips

I'm designing a pick to light system based on ws2811 chips + leds and an mcu like arduino uno or mega. The average distance between the independent light modules will be about 2m which is in the 10m ...
0
votes
1answer
91 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
85 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
42 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
90 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
88 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
48 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
64 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
52 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
61 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
34 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
88 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
117 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
480 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
108 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
133 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
6answers
632 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
378 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
1k 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
235 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
462 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
130 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
531 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
3k 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
96 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
726 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
234 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
293 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
180 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
454 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
135 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
136 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
416 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
338 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
516 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
125 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 ...