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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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 ...
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Trying to trigger relay with motion sensor camera/lights

I want to turn on several lights in my house when the motion sensor light/camera (by Eufy) mounted at the front door is triggered (not using any home automation). I've opened the motion sensor light/...
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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.)...
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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 ...
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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 &...
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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 ...
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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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163 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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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3 answers
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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 ...
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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 ...
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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. ...
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5 votes
1 answer
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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 ...
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6 votes
5 answers
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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 "...
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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 ...
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Connect 240v PIR motion detector to Raspberry Pi

I want to connect a 240V PIR motion detector directly to my Raspberry Pi 3. Inside its plastic case I found 2 PCBs. One is the power supply board which has a 24VDC relay, a S9013 NPN transistor, ...
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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)? ...
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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? ...
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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 ?...
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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. ...
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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 ...
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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 ...
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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 ...
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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. ...
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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 ...
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1 vote
2 answers
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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 ...
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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 ...
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64 votes
6 answers
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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 ...
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3 votes
2 answers
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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 ...
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4 answers
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PIR sensor led strip with N channel mosftet

I have a PIR sensor (HC-SR501) and I want it to turn an led strip(12V 0.8A) on when the sensor detects motion and off when there's no motion. I checked a previous thread which is similar in that ...
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how to program BMI160 inertial measuremen unit to latch detection flags

How should BMI160 registers be set to enable detection flags to be set in INT_STATUS? For example, how to get TAP_STATUS byte-0 bit-5 s_tap_int to set if XDK110 is tapped? I don't need actual ...
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Fast, long linear motion (about 60 cm/ 23 inches) [closed]

I'm currently researching a way to build a punch imitation (for boxing training) and for this i need a simple, fast (if it can be configurable great) and long linear motion which can handle a ...
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1 vote
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PIR motion detector or Emitter receiver pair or? [duplicate]

I have a simple 3 ft by 3 ft goal. I want to electronically detect when a ball passes into the goal but not when it goes wide. I had initially thought i could use a simple PIR motion detector ...
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2 votes
4 answers
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How to count the number of people in a room with a specific sensor? [closed]

I want to count the number of people in a small room. According to my research, there are person-counters in the web but I want to use the number of people data for coding hence I must transfer the ...
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Accelerometer - Offset correction

I'm using the MMA8453Q for motion detection. The accelerometer is mounted such a way that when it is stationary, X & Y axes are at 0g & Z-axis is at 1g. My usecase is: A tilt across any axes ...
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Accelerometer - Tilt Detection

I'm using the MMA8453Q for tilt detection of 45 degree in any axis. I'm a newbie to embedded devices. I have a few questions. 1) Should I be using Transient detection or Motion detection for my use ...
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