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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 ArticleTemperature-based motion sensor responding to a specific temperature range
I'm looking for possible options for a very specific temperature-based sensor, which could be used not just for movement detection (like PIR) but also to detect an object of a specific temperature...
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 ArticleDeveloping an Accurate Distance Measurement System for High-Speed Equestrian...
I am currently working on an MVP hardware product for the equestrian industry. The goal is to accurately measure the distance between a horse and a jump while the horse is approaching the jump at a...
View ArticleI need a sensor setup to detect if something passes through an opening after...
I am making a compartment that holds up to 7 different vitamin pills separately. Each of the 7 slots has a small doorway that allows the pills to exit from the slots (after I click the button) and then...
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 ArticleBetter 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...
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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