Questions tagged [tracking]

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Active Radar Homing with single antenna

From what I remember there are a few A2A and S2A missiles which have their own onboard radar system but I don't think they have multiple radar antennas for phased Array use. I'm curious how radar ...
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0 votes
1 answer
90 views

Why don't the GPS equations account for receiver clock drift?

My basic understanding of GPS is that a network of at least four synchronized satellites send messages containing their locations and transmit times (\$A_i, B_i, C_i\$ and \$t_i\$) to an ...
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-1 votes
1 answer
120 views

Measuring distance with ~300 m range and at least ~2 m accuracy as cheaply as possible [closed]

[Very new to Electrical Engineering.] So what I am trying to come up with is the following: I want to have a device (receiver) that receives signals and put it in one place, not moving. Other devices (...
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83 views

Implemention of indoor posistion using Bluetooth 5.1

I see how Bluetooth 5.1 is going to explode once released commercially. However when I watch the videos on Youtube and how these companies are tracking these BLE 5.1 devices and how accurately it is, ...
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1 vote
0 answers
52 views

Sensor to detect movement of object on a horizontal wire

I am looking on how to build a solution to track movement of an item clipped to a horizontal wire. It has been suggested I could do with with an accelerometer and Arduino. I want to detect any ...
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0 answers
82 views

What is the black two-leg sensor?

This is part of the Auto Sun Tracking Pump. It is attached to the agriculture solar system but damaged and I want to replace it. I don't know the black two-leg sensor.
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3 votes
3 answers
199 views

Best way to track light source?

I want to build a 1-D (azimuth), bidirectional optical tracker. The idea is to have two identical transceiver, mounted on DC servo-motor. The user can move the two servos on rails (reasonably fast), ...
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  • 79
0 votes
1 answer
72 views

Trace both control and power cables in a factory

I am a fresh graduate engineer and tasked with tracing power lines and control cables of equipment in a site to draw its one-line diagram from scratch. I thought of using a circuit/wire tracer device,...
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0 votes
3 answers
328 views

Ultra-narrow beam spread LASER diode

I want to build an optical position tracking system based on PSDs (Position-sensitive detectors). I searched online and found this PSD which has a sensitive area of 12 mm*12 mm. My goal is to allow a ...
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1 vote
1 answer
247 views

PSU Series and Parallel Tracking Mode, Current Limit Behavior

I'm designing a training course for use of the electronics lab equipment at the local makerspace. We have a HY3005F-3 dual-channel DC power supply, and I scanned and posted the manual here. I'm ...
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1 vote
0 answers
56 views

Choosing a stepper for antenna tracking system

I am building a prototype for an antenna tracking system. The following animation will make it slightly easier to understand what I have in mind: https://youtu.be/DZ0LRf6_Zew The two antennas are: ...
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0 votes
2 answers
158 views

PCB trace width

I am trying to design a PCB circuit in altium designer. My circuit consists of one ATmega8a, one NRF24l01 and three magnetic relays (mini relay 12V MPR-S-112-A.) I want to set the trace width to 0....
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1 vote
0 answers
422 views

3-phase BLDC motor resolver problem

I am trying to drive a 3-phase BLDC motor with FOC and have some questions about obtaining resolver offset angle. In the driver I used ABC notation for phases and FOC accepts A phase as 0 angle ...
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  • 81
0 votes
4 answers
501 views

Restrict IR sensor field of view

I'm trying to develop a device that can detect or "watch" an infrared beacon that is freely moving side-to-side anywhere within a 180° field of view (-90° to +90°, with center/forward at 0°); i.e. the ...
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  • 115
1 vote
3 answers
101 views

Which type of sensor for measuring height of horse step?

Is that possible? I'd like to track the amplitude of a horse leg/foot height for a show. The many many difficulties: constantly moving! So ultrasound way too slow the floor is irregular, made of ...
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2 votes
1 answer
454 views

Combining solar panel strings with different azimuth

When combining strings with a different azimuth in an off grid system, lets say NNE facing with North Facing and NNW facing (Southern Hemisphere), you catch the morning and evening sun better, this is ...
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0 votes
2 answers
312 views

Dual power supply with BJT. How to do tracking without opamp?

I'm making a 0-±12V 20mA supply for breadboard. Circuit simulates fine with ltspice. How to implement tracking (or tracking ratio) WITHOUT opamp? I found a schematic here https://groenholdt.net/...
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0 votes
1 answer
58 views

Looking for a very precise tx/rx circuit module to calculate distance [closed]

Thanks for helping. I'm looking for a system that will help me find exact distance between a transmitter and receiver at a frequency of milli seconds, in distance accuracy of milli meters. I want to ...
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1 vote
2 answers
907 views

What is the best way to track IR led?

I want to build an interactive whiteboard which uses an infrared ped. I want to use a camera to track IR position on the projection screen. I plan to keep the camera a little further away from the ...
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0 votes
1 answer
64 views

Locating mobiles/UE by base stations in a cellular system [closed]

After understanding a bit about how actual cellular systems function, I realized that identifying the mobile/UE location is key in assigning the UE to correct base station and thus to guarantee a ...
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2 votes
1 answer
409 views

Alternative wireless technology for passive RFID tags

I am working on a project where I have 3 boxes and a RFID reader (MFRC522) attached at the bottom of each box. I keep my wallet/keys/etc. in these boxes and an LCD screen displays what is in each box ...
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0 votes
0 answers
2k views

SIM800C - CME ERROR: 15 SIM wrong & CME ERROR: 10 SIM not inserted

I am making a GSM Tracker with SIM800C module. After deploying it into vehicles.. It works fine.. but after some days, it starts responding as CME ERROR: 15 SIM wrong for command AT+CPIN? & CME ...
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0 votes
3 answers
3k views

Using a Spectrum Analyzer to measure VSWR

I need to measure the VSWR of a coaxial wire that has a length of 100 metres and a characteristic impedance of 50 ohms using a Spectrum Analyzer (I don't have a Network Analyzer). I found this website:...
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0 votes
1 answer
64 views

GPS start mode query

I am using SIM808 GPS/GSM module. I came across Cold start,Warm start and Hot start in GPS Modules while developing code for a GPRS Tracker for car. I know the difference between them.My question is ...
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0 votes
1 answer
71 views

3-axis solar tracker design

Is it possible to design a 3-axis solar tracker using three stepper motors just like dual-axis solar tracker in which we use two stepper motors one for elevation and one for azimuth?
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3 votes
1 answer
4k views

How can I build a touchpad/trackpad? [closed]

Every laptop has one - a touchpad/trackpad - for controlling the mouse. I'd like to build my own, external one. I've looked around and I cannot find a tutorial. I have come across 1 example where a ...
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0 votes
1 answer
40 views

Communication Technique used in Commercial Vehicle Tracking Systems

I am working on a vehicle tracking system that conveys the coordinates information from the vehicle to a server via GPRS communication. For this purpose I am using a GSM module with an arduino uno. As ...
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2 votes
0 answers
88 views

tracking error state space, linear control example

I am trying to understand a detail from an example, from the control textbook Slotine and Li (1991) "Applied Nonlinear Control", Prentice-Hall, Example 6.4, pag. 220. A linear system is given: $$\...
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0 votes
1 answer
342 views

Desing Problem with Single Axis Solar Tracking System

I'm second year Electrical-Electronical Engineering student (It's Electrical Engineering basically but naming issues I guess) and my knowledge about circuits is limited to capacitors, inductors, ...
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0 votes
1 answer
375 views

Object Recognition and tracking [closed]

I've been trying to make a butter passing bot, like the one from rick and morty. https://www.youtube.com/watch?v=X7HmltUWXgs I can do pretty much everything on there, but I need someone to help with ...
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7 votes
4 answers
3k views

Are I/O buffers of ICs design to have 50ohm impedance?

Is it true that 50ohm characteristic impedance is a convention followed for signal carrying PCB tracks? Also, are the IC I/O buffers also designed to have a close to 50ohm impedance to match this?
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-1 votes
2 answers
735 views

Why Altium designer autorouter making overlapped circuit track (error)?

I am using autoroute option in Altium designer (for only bottom layer), but in result I see some tracks overlapped to each other, as you can see in this photo: So I think when the Altium could not ...
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0 votes
1 answer
658 views

What kind of start is good for GPS modules used in Tracking

I came across Cold start,Warm start and Hot start in GPS Modules while developing code for a GPRS Tracker. I know the difference between them. But when I use hot start method,signal is acquired faster ...
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7 votes
1 answer
198 views

What is a Jaffe-Rechtin PLL?

Eberhardt Rechtin and Richard Jaffe (both involved in NASAs DSN) published this paper (paywalled) on PLL-design and -performance back in 1955. It is referenced quite often, so I wanted to understand ...
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  • 1,730
0 votes
3 answers
543 views

Really small tracker using wifi only?

does anyone know if it is possible to buy or build a really small tracker that uses wifi only. I'm hoping to begin a masters studying bats, possibly in China, I expect in China the areas that the ...
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0 votes
1 answer
331 views

Distance tracking underwater

For a design project at school I need a way to track a short distance underwater (swimming pool). I have looked into programming an accelerometer to measure the distance traveled, but that is not ...
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0 votes
2 answers
789 views

Choosing the right motor to control mirrors

I am developing a computer vision project which involves developing a system using mirrors for pan and tilt movement of the camera field of view. Mirrors are independent of each other regarding ...
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0 votes
1 answer
364 views

A circuit to find 3D position of an object using changes in magnetic fields [closed]

There is a project at http://www.instructables.com/id/DIY-3D-Controller/ to make a DIY 3D controller with capacitors to infer the 3D position of the object being tracked (hand) without using any ...
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0 votes
2 answers
442 views

Use of schottky diode and tracking peaks of input signal with capacitors

I am using this instructable to make a VU meter: http://www.instructables.com/id/Mini-Decibels-a-Simple-Volume-Meter-With-an-Electr/?ALLSTEPS I have two questions. What's the use of the Schottky ...
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-1 votes
1 answer
517 views

Why do some GPS devices require a GSM SIM-card?

Why do GPS products like [Image A] always require a GSM (or similar; i.e. 3G, 4G, etc.) SIM-card?; Whereas typical in-car GPS navigation devices, etc. like [Image B] don't? [Image A] [Image B]
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  • 1,009
3 votes
2 answers
617 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 ...
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  • 171
2 votes
1 answer
666 views

Op amp capacitive loading when buffering a reference

I need to drive a ratiometric current sensor ACS758xCB with a nominal supply current of 10 mA. Due to the ratiometric nature of the sensor I would prefer to supply it from the reference voltage of my ...
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  • 1,755