Instructables: question - sensors Sun, 21 Jan 2018 13:04:49 PST BLOX v1.01 How should I do to solve the problem of GPS data not received? VankeyH I installed GPS module, MicroSD card, OLED, and Arduino Uno board. After upload the code to the board, the result just show zero value. Does it has a problem with my GPS module? How to fix this issue? Thank you in advance for your help. Your help is greatly appreciated
By: VankeyH

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Thu, 18 Jan 2018 02:23:10 PST
Detecting Very Slight Tendon Movements In Wrist Ril900 I've always had an intense fascination for lucid dreaming. Finding ways to communicate or control outside devices based off the slight body movements that are possible despite the natural paralysis during sleep is a topic of great interest to me. I have several LDs (lucid dreams) each night and thr...
By: Ril900

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Wed, 15 Nov 2017 06:22:05 PST
which stretchable conductive fabric to be used for elbow joint movements? PrincyR i am working on human posture detection using stretchable conductive fabric .i am currently using eoentyx stretchable fabric and jersey conductive fabric but it is not showing much variations so please suggest me which fabric to be used for this application. i have read papers that ppy coated fabric...
By: PrincyR

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Tue, 12 Sep 2017 21:09:26 PDT
how Accelerometer work in Electrical car to measure acceleration ? RushitK i am working on electrical car sensor system . i have many sensors in car for different purpose. one of it is accelerometer. My task is to measure the acceleration of car using accelerometer or gyroscope by Microcontroller . Please give me some brief idea about it .
By: RushitK

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Thu, 31 Aug 2017 20:22:50 PDT
PIR SENSOR NOT DETECTING THE MOTION. JUST TURNS ON LED WHEN CONNECTS TO THE POWER SUPPLY. RKS 1 SIR, I bought a simple PIR motion sensor from market. when i connect vcc (input) to the  battery the led gets on. PIR sensor don't detect. what will be possibilities for not working. PLEASE give me the solution to overcome this problem.
By: RKS 1

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Mon, 21 Aug 2017 02:18:29 PDT
Looking to build a unidirectional CAT5e data tap. JustinM272 I wanted to ensure that data being tapped on the RX ends can not be reversed and used for data TX, ensuring unidirectional transfer. I have the tap made  with Hotside Hotside (TX-RX-,TX+RX+)  Coldside Hotside(RX-RX-, RX+RX+). I would like to know what I would need to put in between the hotside and...
By: JustinM272

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Fri, 18 Aug 2017 12:36:11 PDT
How to build the EnvDAQ cards? chinmayeeraj I got the instructions to build the pH and DO sensor accessory to the EnvDAQ circuit. But how to build the EnvDAQ? Also, a supporting code would be highly appreciated. Thanks in advance for your help.
By: chinmayeeraj

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Mon, 7 Aug 2017 10:42:14 PDT
I want to make a really basic tracker and follower system,will it be possible in DIY? Below are some details. Amaey I started a YouTube channel and I obviously upload videos but unfortunately I don't have a "cameraman" available 24x7. I googled my problem and came across a few things like SoloShot etc. But these things are way too expensive in India where average monthly income is below 300US$. I thought of using...
By: Amaey

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Thu, 29 Dec 2016 22:13:58 PST
Is aluminium lose its electrical conductivity when it is oxidised ? JeoleX I have a soil moisture probe that is generally use for gardening projects. So I read some articles that tell about oxidation of this probes in a week. I wanna make soil moisture sensors that I can use it in my experiments and you know inexpensiveness is important rule of DIY :). I planned to use alu...
By: JeoleX

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Fri, 16 Dec 2016 00:01:48 PST
I have Fingerprint module from old sony laptop... Can anyone help me to get the pin breakouts ? shreyask9 This fingerprint reader module is from hannstar-j  m.b. which I extracted from a old sony laptop (I dont have SN or model no).  This module has weird type of 10 pin socket connector. Can any1 tell me the pinouts for it....? I want to connect in to my new laptop via USB or PS2. I tried to connect it ...
By: shreyask9

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Thu, 1 Dec 2016 07:50:29 PST
Do RFIDs constantly track? Spoops I'm wanting to buy some RFID tags for a project that I'm doing, and I'm wondering if passive RFID tags that are activated constantly track and  send their location to the RFID receiver.  This is absolutely critical to my project.If these don't, what can I use that does the desired function?  Thank y...
By: Spoops

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Fri, 18 Nov 2016 08:54:50 PST
Type of sensor in automatic scooter's speedometer? _Boltz_ So, which Type of sensor's is in scooter's speedometer. i've got a bunch of wires i've identefied all of them, only 2 are left, which one connected to a voltameter shows no hike in voltage when scooter is moving...... so which type of sensor is that.
By: _Boltz_

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Wed, 5 Oct 2016 09:58:47 PDT
engine light how to turned it off all seniors have been changed.? edmondwhitejr I was told to change all seniors and the engine light will go off i changed them light did go off but after driving it awhile the light come back on and on and off what might be wrong or what keep the light from staying off.
By: edmondwhitejr

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Sat, 10 Sep 2016 14:23:34 PDT
IR sensor Hudson samuel Hi guys, Please help me to control my RC Car with eye IRIS movement (may be by using IR sensor). I  am waiting for your earliest  reply........... Regards,......
By: Hudson samuel

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Wed, 29 Jun 2016 09:04:04 PDT
My radio in my dodge journey isn't working. what going on?? MaryJ75 radio doesn't work in my dodge journey 2012
By: MaryJ75

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Mon, 13 Jun 2016 14:52:52 PDT
Keller Read30 and a RS485 to USB Rvntlt Hello everyone!  I have a lil' project with some pressure sensors and I'm using a RS485 to USB ( for data aqcuiring and Read30 for the sampling. The problem is, Read30 doesn't recognize the device, specifically the RS 485-USB, previously I tried w...
By: Rvntlt

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Thu, 26 May 2016 08:41:52 PDT
Need help to make a project fred.salivia I need to build a project where a proximity sensor of a person (1 - 3 ft) would cause a very small motor to press a plastic bottle once per cycle. The cycle should only be able to be activated once between 10 - 15 minutes.  The soft plastic bottle would be no more that 2 - 4 cm diameter 7 - 8 cm lon...
By: fred.salivia

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Wed, 18 May 2016 08:12:57 PDT
CRIUS GPS module not sensitive anymore. Any ideas? -max- It's been awhile since I have messed around with my quadcopter. However, the weather was really nice yesterday and I decided to go for a bit of a flight. Just about EVERYTHING on my quadcopter was messed up. To the point it was unflyable. Some reason my CRIUS GPS module simply stopped working as wel...
By: -max-

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Sun, 21 Feb 2016 10:16:54 PST
Hacking a cassette tape adapter? DrRorschach Hey everyone!  I was wondering, would it be possible to use the head in one of those cassette-to-AUX adapters as a tape reading head? Finding a new magnetic tape head is like hunting for hen's teeth, so it'd be nice if that were an option.  Many thanks!
By: DrRorschach

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Tue, 16 Feb 2016 04:32:22 PST
Hall effect sensors: how close can two magnets be without interfering? ThomasB164 Suppose I have several magnets and I want to use the same number of Hall effect sensors to read their polarity. Each sensor would be within 1-2 mm of its intended magnet. How far apart would the magnets need to be to avoid interference? I'm looking specifically at the Melexis US5881.
By: ThomasB164

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Fri, 5 Feb 2016 15:08:09 PST
Reducing the influence of low temperature objects on PIR sensors? SentryGunner ​Hello, can anybody please help me with this? I was wondering if there was some sort of filter/material that I could place in front of a pir module, that would filter out any low temperature objects and only allow high amounts of infrared radiation to pass through and trigger the sensor (body heat)....
By: SentryGunner

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Sun, 3 Jan 2016 18:39:21 PST
need outdoor motion sensor switch with by pass feature for pot lights? gg89 I'm looking for a reliable outdoor dome motion sensor switch with bypass feature for pot lights.  best if I can bypass with flipping the indoor switch and reset by power off for a while, will settle for wireless bypass by a smart phone or last resort: a wireless remote from inside. look forward to ...
By: gg89

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Sun, 1 Nov 2015 23:03:33 PST
Conversion of RS485 data to usb? Batman16 I have a keller pressure sensor PAA-33X which gives output in RS485. I also have an rs485 to usb converter( so that I can get the value directly on my computer for viewing and further processing of that data. I tried the connections but...
By: Batman16

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Fri, 30 Oct 2015 12:47:49 PDT
DIY Small Scale Radar (like Google Soli)? blorgggg Anyone know how to build my own simple small scale radar for detecting ants on trees? e.g. @googleresearch #soli I don't need super sophisticated processing or anything, but just would like a small radar system i can mount next to trees and monitor movements over an area.
By: blorgggg

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Tue, 8 Sep 2015 17:46:48 PDT
I want to interface my pressure sensor which uses RS485 communication protocol to send data to arduino. What can I do? Batman16 I am using a keller pressure sensor( which works on RS485 communication protocol to send the data. I used the following kellerbus code : with my arduino but, am not able to interface it. I am thinking of p...
By: Batman16

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Tue, 1 Sep 2015 03:20:47 PDT
How can you program chip to detect motion using infrared or thermal? EpicNickP I'm making a Smart Pistol MK5 from the videogame Titanfall and I was thinking if I could use camera from gun to special glasses that could detect motion that uses infrared and/or thermal. My problem is how to code a chip to detect motion.
By: EpicNickP

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Thu, 2 Jul 2015 18:42:39 PDT
Arduino Thermal Camera? DELETED_MakerNinja Are there any cheapish arduino compatible thermal cameras on the market?
By: DELETED_MakerNinja

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Sat, 27 Jun 2015 17:49:02 PDT
How can I build an electricity monitoring and control system? jamestyas The service will be to install energy monitoring equipment in a premises which records kW hours electricity usage and also voltage fluctuations. This data will be collected every few seconds, but summarized every few minutes. The recorded data will be transmitted to local data hubs and then over the...
By: jamestyas

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Sun, 10 May 2015 01:36:18 PDT
What sensor should be used, or what can i make to precisely align a vehicle up to a ramp? colie1904 Sorry i couldnt decide how to word my question but here is my situation and i would be gratefull for any input because i am not sure what would be the best or easiest way to go about it.  My car is lowered and therefore i can not park in my driveway without having a ramp(plank of wood) infront of ea...
By: colie1904

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Sat, 11 Apr 2015 03:13:28 PDT
foodsaver robert.creazzo I have a food saver model " 3485 it keeps saying my tray is full  it wont do nothing
By: robert.creazzo

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Thu, 9 Apr 2015 10:32:51 PDT
Sub-mm precision ultrasonic or inductive distance sensor for use with Raspberry Pi? lasercycle Hi there, I am trying to keep my hardware/ coding skills alive and spruce up my bicycle wheel truing stand. I need to figure out the required hardware + software for the following: I want to build a non-contact distance measurement sensor system and get the output "into" my computer for display in...
By: lasercycle

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Mon, 9 Mar 2015 18:41:58 PDT
seeking arduino developer for a small LED / Motion sensor based art project - Los angeles. daksh.sahni.9 Hello  I am a los angeles based artist who is looking for a part time developer who can help design and develop a small circuit which shall include led lights / motion sensors for a small art project.  I do have a small budget for this.  Please contact me at I am looking for ...
By: daksh.sahni.9

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Wed, 4 Mar 2015 19:03:11 PST
Component identification Jaxon0077 A while back a bought a bag from a thrift shop that had all sorts of components in it. I figured for 50 cents it wouldn't be so bad especially because it had a bread board in it. I can figure out what everything is but this....I thought it was a photoresistor so i tried putting it in a circuit like ...
By: Jaxon0077

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Sat, 24 Jan 2015 13:30:41 PST
The different between this two thermistor and where to find their datasheet? tplim Hi Instructables members', Can anyone tell me the different between this two thermistor and it application circuit: 1 - Thermistor_50s (see attached picture) 2 - Ptc_thermistor_500-800r_hmz13-05m650rn (see attached picture) Thank you in advance
By: tplim

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Fri, 28 Nov 2014 17:06:52 PST
I am looking for a sensor that activates after the clicking noise of an automobile turn signal CurtisJ2 Hello Forum, I am looking for a sensor that activates after the clicking noise of an automobile turn signal solenoid stops. Similar to the "clap on clap off" device, but activates only after I choose to stop clapping.  Or like a heart monitoring circuit that activates an alarm when a heartbeat st...
By: CurtisJ2

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Tue, 11 Nov 2014 16:47:50 PST
Using a PIR to turn on a sound module lonesoulsurfer Hi All, I have used PIR sensors before but i usually hack one from a cupboard light you can buy.  What I want to do is use a really small (and cheap) board like the trinket (adafruit) and hook it up to the PIR in order to turn on a sound module.   Does anyone know what board would be best to do thi...
By: lonesoulsurfer

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Wed, 2 Apr 2014 18:00:05 PDT
How to increase the light sensitivity of a DARK SENSOR CIRCUIT? Arijit Chatterjee I recently managed to replicate a dark sensor circuit using a LDR, a 220K & 330 ohms resistor, a BC547 transistor and a LED. But the problem is that it is very little sensitive to light. During daytime there is no problem but at night, under the CFL light it doesn't sense the light and turns on. To ...
By: Arijit Chatterjee

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Wed, 26 Mar 2014 07:43:26 PDT
How does one make a reverse photocell? EEWolverine How can you use a photocell to make a circuit whose resistance is proportional to incident light? I'm looking for an open circuit in the dark and a short circuit in lighted conditions.
By: EEWolverine

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Tue, 7 Jan 2014 22:50:46 PST
pinout help for my salvaged ir sensor/photo diode from mouse.? Atul009 i have salvaged ir emitter sensor pair from an old optical mouse. ir led glows fine on testing with mutimeter but the sensor part has 3 legs and i have always worked with 2 leged photodiodes . what is this specifically called? how can i know its pinout by testing with multimeter?
By: Atul009

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Tue, 24 Dec 2013 11:12:33 PST
I need help in Proteus program !! CSE251 Hi everyone .. I'm made  "Automatic Plant Watering " circuit in Proteus, but I can't find the probes, so can I place it with switch !! another thing is where I should connect the water pump? thank you ..
By: CSE251

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Fri, 6 Dec 2013 05:49:10 PST
how to use quad photodiode from a dvd burner as normal photodiode? Atul009
By: Atul009

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Sun, 27 Oct 2013 22:20:17 PDT
how xbee serial work? adiga123 hello i read ultrasonic sensor serial connected to arduino but when i connect xbee between sensor and arduino and i configur my and dl matching and same id what i need to config else i work on 3,3v what i need to do to make it same as i read direct from sonar . this is my code reading from sonar an...
By: adiga123

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Sat, 21 Sep 2013 06:45:41 PDT
How to attach a flat weight sensor to a voice recorder? What kind of sensor to use and where to buy items? mrobyn22 I'm making a prototype the size of a door mat that when stepped on plays a voice recording. What kind of sensor would I use and how could I make it activate a voice recording (it needs to be flat)? Where might I buy the needed items? The sensor would need to be activated after 1lb of pressure was ap...
By: mrobyn22

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Wed, 5 Jun 2013 09:35:52 PDT
Suggestions for a sensitive, hall effect sensor to be used with an arduino? konjurer I'd like to find the an inexpensive, highly sensitive hall effect sensor.  One that could possible sense a strong magnet from several inches away or within someone's hand if they were holding a strong magnet in their closed fist. I am looking for a non-latching sensor that would trigger when a magn...
By: konjurer

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Fri, 26 Apr 2013 14:51:36 PDT
How to set the gas sensor so its already have a value in ppm which read by microcontroller? ftreska How to set the gas sensor so its already have a value in ppm which read by microcontroller? so i dont need to convert the Vrl output from gas sensor into  value of gas in ppm on microcontroller.
By: ftreska

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Wed, 3 Apr 2013 23:17:48 PDT
Is it possible if i connect a gas sensor MQ-136 to microcontroller directly? ftreska i want to detect sulfur dioxide (SO2) uses sensor MQ-136. Is it possible if i connect the sensor to microcontroller directly? or i need to add a circuit between it? if yes, what kind of circuit ? And anyone knows what is output of gas sensor MQ-136? whether it is analog or not yet? Thanks folks!
By: ftreska

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Wed, 3 Apr 2013 06:04:31 PDT
hi..u know how to improve go-cart using motion sensor? palabuto im electronic student and i need to finish my project about to improve go-cart using electronic system so i want to built a car that can detect out current place in race by display it using 7 segment..its using motion sensor to detect other car that tress passing us..can anyone help me?
By: palabuto

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Tue, 5 Mar 2013 04:45:36 PST
Help me create a motion sensing AC outlet trigger? fabes253 Hello, I would love to create some kind of motion sensing device that I could plug into a wall socket and then plug a AC 120V device into it that would be activated by the motion sensor being tripped. The goal is to build something simpler and more cost effective than the infamous Blender Defender...
By: fabes253

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Thu, 21 Feb 2013 15:02:13 PST
how do you get pass school blocks without proxyies? 381530 my school has a proxy bolck on all major media social network and i am trying to get pass it so that i can acess facebook, twitter, my space ect and i can't because we can't download things exspecially proxies or we will get supended
By: 381530

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Sun, 3 Feb 2013 12:27:53 PST
How can I make a motion activated motor that can pull a cable and pull up a 4lb object ? nagualar How can I make a motion activated motor that can pull a cable and pull up a 4lb object  ?  I am wanting to make a toy for my cat. I want the sensor to keep the object up for extended time. Who can help me.
By: nagualar

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Fri, 21 Dec 2012 18:57:26 PST