Can I electronically trigger a PIR motion sensor?
I would like to trigger a PIR sensor using an infrared LED. Is that possible? My goal is to simulate motion in front of the PIR, when there otherwise is none. I tried using a handheld remote control,...
View ArticleSense human behind plastic?
We need to get some kind of a simple sensor, that can sense someone is standing close to a product . But, it has to be behind plastic, and not seen at all .We only need to detect someone 1 meter away...
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Changing regular momentary switch to a motion detector in staircase timer...
(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 "T" switches...
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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 to...
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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 solenoid...
View ArticleClosed 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.)...
View ArticleA 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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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 to...
View ArticleUnderstanding use of accelerometers to measure angular (rotational?)...
Imagine this: A rod is attached at one end to a rotating shaft. So, as the shaft rotates from 0 to 90 degrees back-and-forth (in the xy plane), so does the rod. My goal is to measure the instantaneous...
View ArticleHow 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 window...
View ArticleSensor options to detect ball
I am working on what I hope is a simple project as I am dabbling in this field. I am trying to create a target (in the shape of a box) roughly 1m by 0.5 meters into which soccer balls will be shot...
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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 time...
View ArticleIs it possible to detect linear motion of a billiard cue using a crude...
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...
View Articlemotion 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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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 my...
View ArticleHigh 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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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 will...
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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 at...
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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,...
View ArticleIs 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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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...
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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 button. I want...
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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...
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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 at...
View ArticleBipolar stepper motor - can't decide whether its defective or not
I am trying to control a two phase bipolar stepper motor using a TMCM-3212 module. The parameters of the stepper motors are 0.96 A rated current and 2.66 V.When I first ran the Python script of the...
View ArticleSensor 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...
View ArticleWhat type of transmitter to use for a magic wand? [closed]
I'd like to mount a transmitter on a Harry Potter style wand. Then place a sensor in front of it (range 3-4m (couch to TV range)) to detect simple movements like upwards, downwards sideways.What's the...
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Find IC used in Microwave motion sensor (701E)
I am working on a project that involves 5.25Ghz microwave motion sensor, to properly get the results i need to integrate the microwave sensor with arduino.I found a device having the same specs but...
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Connecting PIR Motion Detector with RF Transmitter
I'm working on a project to create a wireless motion detector using a PIR sensor and an RF transmitter. Both circuits function well independently, but when I connect them, I encounter issues....
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What type of potentiometer has no shaft but can be secured with a nut and...
[![enter code here][1]][1]Location where potentiometer needs to be attached:Plate where potentiometer is attached:I am looking for a potentiometer that has no shaft that can be screwed with a a nut and...
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