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Questions tagged [motion]

Motion may refer to the motion of objects, like rotation, drop or picking up, for which **motion sensors** are used. Or it may refer to the motion of persons, for which typically **PIR motion detectors** are used.

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PIR Circuit Problem

I am using D203B model of PIR and I used the circuit that was suggested on its datasheet (first pic). I do not know what the problem is, as the output (pin the 8 and 14) of op-amp (LM324)is always on (...
Saeed's user avatar
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1 vote
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How to introduce a PIR motion sensor and/or timer into my circuit?

I created a product demo box that completes a circuit once the "push to start" button is pressed. Closing the circuit allows the customer to see my product in action while holding down a ...
Charles's user avatar
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Motion controller using brushed DC motors

I've designed a simple robot with 2 active wheels and 4 omni wheels and I'm trying to figure out the motion controls. I'm using 8300 RPM motors (https://uk.rs-online.com/web/p/dc-motors/3213192) which ...
OM222O's user avatar
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2 votes
2 answers
242 views

Is Modbus suitable for motion control positioning?

I need to issue position setpoint commands to a servo drive 50 times/sec. The drive will be responsible for closing the PID loop, etc, while the motion controller I'm developing will handle generating ...
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2 answers
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How can I sense Infrared Light properly to detect direction of Motion

I've designed the schematic below: Basically, I want to detect direction of motion at a door frame from the top to turn on or off a relay which is probably connected to lights. The phototransistors ...
CaveScientist's user avatar
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198 views

How can I limit the active working angle on a microwave motion sensor?

I have a microwave motion sensor that can be triggered in almost every angle. I want to limit its angle of view to only one side of the board but so far I had no success. What I have done: Designed ...
AKTanara's user avatar
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Is it possible to detect linear motion of a billiard cue using a crude potentiometer?

I’m working on a project that simulates the motion of a billiard cue. I’m thinking of using an Arduino Uno for communication and an MPU6050 module for detecting angular rotation. For detecting linear ...
chaosifier's user avatar
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2 answers
145 views

Very low-power ESP8266-based motion detector

I'm building a new schematic to set up an ESP8266 m-based motion detector which should only work during the night. My goals are: Use an RTC to store time and read time when ESP starts up (if not in ...
Titi's user avatar
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How to add more lights and sirens to motion detector

I have a motion detector size of a cigarette box that rings bell or simple song when activated using a small remote control. We turn it on after closing the business to go home. We've had many ...
McJoo's user avatar
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Closed Loop Stepper Motor/Driver

I have been tasked with building a motion control demo box. The controller MUST include an Omron Delta Tau Power PMAC (CK3W-AX1515P). I can be flexible with the other components (motors, drivers, etc.)...
Brains_Mentality's user avatar
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522 views

SR501 PIR Motion sensor outputs high voltage in signal pin

I have connected a SR501 is powered by 5v converted from 12v through 7805 voltage regulator. The output voltage on the signal pin is normally 5v and on high it outputs 8v. This makes my relay module ...
Ramki's user avatar
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2 answers
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Changing regular momentary switch to a motion detector in staircase timer circuit

(Reference image below) I have a classic staircase timer circuit ("TC") where any of the momentary switches will trigger the timer to power all the bulbs. Now I want to replace one of the &...
Mike's user avatar
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10 votes
6 answers
2k views

A few questions on PIRs and other motion detectors

I grew up incorrectly believing that motion detectors (as part of burglar alarm systems) were designed to detect movement, when in actual fact it is the movement of a heated (like body heat) object ...
questioner's user avatar
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615 views

Partial Differential Equations to Describe Electric Current

I am a newbie in PDE. I know that Navier-Stokes equations are used to describe the motion of viscous fluid substances, what are the equivalent partial differential equations that are used to describe ...
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2 votes
1 answer
436 views

HB100 range extension with dish antenna

I have interfaced an HB100 sensor with an ATMega microcontroller. It easily detects my hand movement upto 5-6" away only. I want to extend the range of the sensor so that it detects movement upto ...
Sidk's user avatar
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1 answer
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Better displacement finder? Lasers/Inertial Sensors

I've seen laser rpm measurement devices. But can it be used the find displacement/distance moved for object when attached to it? I know taking rpm of wheel and multiplying by circumference would give ...
user262839's user avatar
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0 answers
2k views

Triggering 12v Relay with HC-SR501 PIR sensor

I have a SRD-12VDC-SL-C relay with this configuration: https://robu.in/product/1-roadchannel-relay-module-light-coupling-12v/ And I want to trigger it with PIR Motion Sensor Detector Module HC-SR501 ...
Mohak Shukla's user avatar
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1 answer
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Advice on setting up sensor switch

Hi I would like to fit a (motion sensor/IR sensor) sensor switch to a machine in my catering van. The machine is a 12v machine. I would like to start the machine using the sensor switch and would like ...
Abcd123's user avatar
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3 votes
1 answer
2k views

Motion sensor to detect birds and small animals but ignore humans

I would like to develop a motion activated sprinkler to deter birds (cranes and other smaller birds) and small animals from eating the fish in my pond. I am using the approach of controlling a ...
SamuraiJack's user avatar
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1 answer
475 views

PIR motion sensor connected to Arduino sometimes does not detect a repeatable trigger

I have connected the PIR motion sensor HC-SR501 to an Arduino Uno and its jumper settings is set to H and GND. (This is not a physical jumper, but a small link that connects both H and GND.) It ...
Shashi Kiran's user avatar
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1 answer
449 views

Motion triggered battery powered dimmable COB LED light

My view on life, in any field, is not to produce more but to consume less. Everybody told me this is a very eccentric weird mentality. Perhaps they are right. Nevertheless I have to build my project ...
Niculae George Razvan's user avatar
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1 answer
239 views

Change closing transistor to opening in a Microwave Radar Switch?

Preamble: I have little knowledge of electronics in detail, but I know how to solder, have a working brain and am fearless :) There are many low-cost Microwave Radar Switch PCBs out there (very ...
Dr. Woo's user avatar
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1 vote
1 answer
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How to enable the DMP of the MPU9250?

The datasheet mentions some Advanced Hardware Features which gets executed by the Digital Motion Processor. I'd like to use the ...
Swedgin's user avatar
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1 answer
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Can failure of an old electrolytic capacitor be precipitated by motion?

I have report of a circuit board failure. The board was 20+ years old, and included at least one electrolytic capacitor. That capacitor would then be beyond its expected useful life. The board was ...
Stephen Collings's user avatar
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1 answer
38 views

Motion Detector Time Adjustment

What it means when adjustment area is: 10±5 s-10min? I cannot find a solution from Google.
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1 answer
136 views

Sensor fusion using IMU sensor

How to do the sensor fusion using the 4 IMU sensors. Here, 4 IMU sensors are used to know the location of every point where the IMUs are placed? I need the location of the every point on a 3D graph ...
Vivek Karna's user avatar
1 vote
1 answer
2k views

What type of sensor to detect if an object passes through?

(Sorry for my bad English) Hello guys, I need your help since I have no idea about electronic stuff. I have a table soccer and want to install motion sensors in the goals, so whenever the ball ...
dmrthis's user avatar
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0 votes
1 answer
623 views

Converting Battery Operated Motion Sensor Light to AC Powered

I have converted many battery powered devices to AC adapter in the past. This time around I am using a Motion Sensor light which takes 4 C batteries and is used to light a closet. When I connect a ...
Hartman9's user avatar
0 votes
1 answer
161 views

P30N06 Mosfet Not Working Correctly

I have an N Channel Mosfets I'm trying to use as a switch for a motion sensor and an LED strip light (12V <0.8A). It seems like no matter how I hook up the mosfet it is always set to 12V or stuck ...
Hughes's user avatar
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1 vote
2 answers
4k views

Read Quadrature encoders over I2C bus

I need to add encoders to the 4 motors attached to a "remote" PCB. The remote PCB in question does not have microcontroller on it, but rather is connected to the microcontroller PCB with an I2C ...
Casey's user avatar
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1 vote
3 answers
204 views

Is there any way to obtain linear or angular distance proportional to a voltage signal?

If we have a programmable arbitrary function generator as a voltage signal source and if we are able to output any waveform like a sine or exponential decay as output voltage versus time; how can this ...
user1999's user avatar
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1 vote
1 answer
1k views

To Fail-Safe or not Fail-Safe on RS485/422 Transceiver

I'm stuck on a PCB design issue. I'm designing a new PCB (Daughter board) that will plug (via DB15-F to DB15-M) onto another PCB (existing Mother board) and the design intent is to take (from the ...
Steve's user avatar
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1 vote
1 answer
1k views

Compensate centrifugal force in accelerometer measurements

I'm working on a project that includes counting the revolutions of a cylinder connected to an engine. This engine runs at a minimum of 5 revolution per second and a maximum of 9 revolution per second. ...
minimanimo's user avatar
5 votes
1 answer
832 views

Identify this component with a weight inside a cylinder

This component was pulled from a device that was used to detect movement. When I first saw this part, I thought it was an electrolytic capacitor, but upon closer inspection, I found that if I shake ...
Jason O's user avatar
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6 votes
5 answers
6k views

Stepper Motor acceleration profiles for short runs

I've done a fair bit of reading on stepper motors and acceleration. I had to wade through a lot of different strategies with a lot of calculations, including one which called for several candles, and "...
darrob's user avatar
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2 votes
1 answer
14k views

motion sensor with high pitch noise?

Don't know exactly where I should post this but I'm pretty sure it would be fine here . I was walking home right now late a t night and I walked by this persons house and out of no where I heard a ...
John doe's user avatar
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1 vote
1 answer
646 views

Connecting a 240 V PIR motion detector to a Raspberry Pi

I want to connect a 240 V PIR motion detector directly to my Raspberry Pi 3. Inside its plastic case I found two PCBs. One is the power supply board which has a 24 VDC relay, an S9013 NPN transistor, ...
devlime26's user avatar
0 votes
1 answer
253 views

Is mbed RTOS suitable for commercial motion control solutions

Is the mbed RTOS suitable for commercial motion control applications? Is it advisable to separate the actual motion controller from the network handler, etc (i.e. motion controller in separate MCU)? ...
M-R's user avatar
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0 votes
3 answers
2k views

How can feedforward be used with PID for motion control

In a motion control system where a motor accelerates, coasts, and decelerates (setpoint is position, not velocity!), what would be the benefit of using feedforward with PID, instead of solely PID? ...
M-R's user avatar
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-1 votes
1 answer
1k views

presence detection using Panasonic grid eye [closed]

I want to use grid eye AMG8833 for presence detection. Has anyone used gridEye for the same purpose? Or Can someone suggest algorithms to decide whether someone is present beneath the sensor or not ?...
Ashish Shukla's user avatar
0 votes
2 answers
178 views

Choosing an Encoder Resolution

What is the minimum resolution recommended for low acceleration motion control? Maximum Velocity can range between 2 rev/sec to 50 rev/sec. Acceleration could be as low as 0.01 rev/sec/sec. ...
M-R's user avatar
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-1 votes
2 answers
2k views

i want to use motion sensor module ouput to trigger a triac

i am begginer in electronics and this is my first circuit its about a small motion sensor 220v AC switch i want to make myself but i want to use Triac as a solid state relay insteade of normal relays ...
Tarek Helmy's user avatar
0 votes
1 answer
397 views

Main switch circuit with thyristor and bridge problem

Following circuit is a 220V touch switch from this website: http://8085projects.info/m668-based-touch-sensitive-step-dimmer-circuit.html I'm wondering how it works because the IC take its working ...
M.A.K's user avatar
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0 votes
1 answer
217 views

Change in current for a moving sliding bar? [closed]

From this diagram: This design is inspired by the classical rail configuration, however, now having all the current flow direction in the -y axis. There are two components, a large rigid conductor ...
Pupil's user avatar
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0 answers
229 views

Long Range Motion Detection solutions

I'm trying to find solutions for the security of an outdoor area (2km long and 1km wide). We want to detect any breach through the borders of the area, if someone sneaks in and/or someone goes out. ...
mamsoudi's user avatar
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0 votes
2 answers
297 views

High resolution rotary encoder

I'm trying to find a way to translate small angle rotation into some form of digital signal. 1 degree resolution would be excellent, but something like 5 degrees would be ok. I need something like a ...
Marcovecchio's user avatar
1 vote
2 answers
922 views

pir motion sensor sensor - working principle

I read about how PIR sensor works. It is written that it has two slots that convert IR energy to electrical voltage pulses. The working principle is to diff between the two slots and when the ...
DDonkey's user avatar
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0 votes
1 answer
522 views

ARM Cortex-R for motion control application [closed]

I need to control about 50-motors(brush DC/Stepper) with each of them having an encoder for feedback.Precise motion control is needed for each motor axis.I have been looking at ARM cortex-M4 ...
Koundinya's user avatar
66 votes
6 answers
12k views

What makes smartphones tilt-sensitive? Will they retain this ability in zero-gravity conditions?

Most smartphones are tilt-sensitive, but what device makes this possible? Additionally, how does it (and the sensors associated with it) work? Also, since the working of these sensors seem, almost ...
paracetamol's user avatar
3 votes
2 answers
5k views

PIR sensor not triggering P2N2222

I have this setup where a PIR sensor (HC-SR501) powers an LED strip with the help of a P2N2222 transistor. I then manually connected the Transistor base to the 12v rail and it has no problem ...
Kokachi's user avatar
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