Search for sensitive in Topics


Sensitive Motor?

Im looking for a small, no bigger than half a roll of quarters, dc motor that can be programmed to spin 50ths of a turn. it needs to have some power and not be super expensive, thanks for the help.

Question by theboygenius    |  last reply


How to replace mini microphone with more sensitive mic?

Hi I am trying to replace mini microphone (is very similar to mobile phone microphone) of Audio bug with more sensitive Standard electret microphone with intention that it pickup sound from more than 1 metre distance, and in doing so I am getting too much noise in Audio bug out-put. Do I need pre-amp? Is there any better way to do it? If pre-amp then how to harmonise out put of pre-amp to the input of audio bug? Any help..... Thank you.

Topic by ksaus  


555 monostable sensitivity?

Has anyone built a 555 monostable circuit that was extremely sensitive for no apparent reason? I'm trying to use one in a rube-goldburg machine, and for some reason it's extremely sensitive to any sort of touch! The circuit sometimes comes on for no apparent reason, other times it will stay on for longer than the expected duration after the button is pushed. I'm using non-CMOS 555 on about 5 volts to run a small LED. The capacitor I used was a 0.01 uF on pin 1 to 5, and a 1 uF electrolytic on pin 1 to 6. I used a 1M resistor on pin 7 to 8.  I'm simply baffled by it. I've tried using different breadboards, different PSUs, brand new components, and correct gauge wire, but despite everything being seemingly fine, it's still shows the sensitivity. Anyone have any advice?

Question by tylervitale    |  last reply


Microphone sensitivity range?

Can a normal microphone as present in most headsets detect noise levels below and/or  above human audible frequencies. And if so  is it possible to see the audio waveform for such noises using such a mic?

Question by muhammajunaid    |  last reply


Motion Sensitive Switch

I'm trying to come up with a switch that activates when it is moved. Ultimately it would connected to a sound device and a small sample would be played every time the unit is picked up. Any suggestions on how I should go about doing this?

Topic by hectma    |  last reply


Sensitive Accelerometer Chip

I've seen some projects that use accelerometer chips with arduinos to get readings (e.g. in MATLAB). I'm looking to do this but I'm going to be measuring very low amplitude, low frequency vibrations so, I imagine, the types of acceleromters I've seen used (e.g. the MMA7341L) won't be sensitive enough. Does anyone have a suggestion for which accelerometer would be appropriate (I know that MEMS are a popular brand - there's a list here: http://www.analog.com/en/mems-sensors/mems-accelerometers/products/index.html)  Many thanks for your time! Oli

Topic by ocheadle    |  last reply


Electronic touch sensitive panels

I am somewhat new to electronics and want to make a set of touch sensitive panels that light up quickly and dim slower.I plan on puting them right next to each other so that a can drag my finger across them.I was thinking to build a circuit for each panel, That lights an led upon touch, so the parts for the circuit need to be cheaper. I also need an opaque or clear material that you can see an led light up from under and that is conductive. If you've got any ideas then please share them.

Question by Jgniklu    |  last reply


How can I make a microphone less sensitive?

I have these microphones for a project I am working on, but they are much too sensitive. Can I put some resistors with them to make them not so sensitive? I basically want them to record only what they are aimed at.

Topic by l0cke    |  last reply


Remote motion-sensitive alert light

I've searched these forums and found some similar threads but nothing specifically like what I'm trying to do. First, I am NOT very DIY savvy. I'm a computer tech and can build a PC from components, but I'm not a drilling, wiring, woodworking type. What I'm trying to make is a small remote motion-sensitive light so that when the motion sensor trips, a small under-cabinet style LED light will come on or just flash a couple of times. I want to be alerted when someone comes to the front door, even if they don't knock. USPS for instance leave packages without knocking and I may not know anything's there until I happen to go outside an hour or two later. Would rather get an immediate notice that someone is there without the expense of a CCTV setup. Any help or guidance on components would be appreciated. Battery powered is fine, and preferably something wireless if possible so I don't need to put holes in my walls. Thanks!

Topic by deitner    |  last reply


Which would be better for storing sensitive information in an iPhone App, Core Data or SQLite?

I am making an app that involves sensitive information.  Which is more secure?

Question by drmjj55  


having some issues with a touch sensitive switch. ideas?

So a little while ago i had put together a circuit for a touch sensitive switch based off the 555. it works great, it senses when i touch it and operates an optocoupler from that. the issue is it senses when i touch anything electrically connected to it. im currently using a power brick to power it (supplying 5v and 12v, the switch is part of a lerger project) and if i touch anything thats connected to ground the switch activates. the part that confuses me is that theres no ground plug, just the two main AC wires. Somehow its sensing through one of those wires as well, and when capitance builds up elsewhere in the system the switch activates. as far as i know the only way for me to isolate the switch is to power it using batteries. is there any way to power it still using the power supply without it sensing things other than me touching it?

Question by zack247    |  last reply


Touch Sensitive Floor Mats

I have one of those Halloween floor mats that when you step on them, it triggers a sensor that has it make a screaming noise. Is there anyway to hack this? It's annoying and I want to make use out of it.

Topic by thatjawn    |  last reply


4-wire touchscreen sensitivity

Hi team I posted this on the Arduino forum, and had a search through several electronics sites; perhaps there's also someone here who can suggest something. I have successfully hooked up my touchscreen to Max via Arduino; the code is fine, the circuit is fine and the Max patch is fine. I'm just wondering if it's possible to tweak the sensitivity of the entire circuit? When touching, one must press fairly firmly, otherwise any relaxation of touch, even with continued contact, results in a rapid fall to zero. In the Max patch, I'm using [sel 0]-> outR, after all the [serial] gubbins to help smooth some jitter. But is it possible to tweak the sensitivity, perhaps by using resistor values other than 10k. Hey, maybe even connect a variable resistor to allow realtime tweaks? Hmmm. Thanks Brendan

Topic by brendanmccloskey    |  last reply


heat sensitive wall outlet

Does any one have or had plans for a wall plug outlet or an extension cord from a tool that would turn off if the temperature of the devise reached a preset degree.  i.e. your coffee machine operated normally but it caused the duplex plug to overheat and the circuit would shut down avoiding a possible fire condition. 

Topic by dano9999    |  last reply


LEDs in resistance sensitive circuit

My question is relative to getting a LED to function correctly in a resistance sensitive circuit.  Here is the situation. 1. The Battery Warning Light in an automobile I am restoring currently uses an incandescent bulb.  2. Functionally, the light is on when the ignition is turned on, but goes off when the engine starts.  3. This works fine with the incandescent bulb, but not with a LED, even if I put the same incandescent bulb in the circuit (parallel). 4.With just the LED in the circuit, it never goes off.  This is because the circuit has about .5V leakage voltage through the device (which is a Lucas 3AW Warning Light Unit) when the engine is running (and correctly, 12V when just the ignition is on). 5. With both the LED and the incandescent in the circuit, the incandescent does not come on and the LED does not go off, both with ignition on and engine running. 6. I have also put a potentiometer in the circuit with just the LED and cranked it from 1 Ohm to 100K Ohms, with no effect. 7. Of course, an easy answer is to just use the incandescent, except that the dash is wired and complete and installed, and I prefer to get the LED to work.  Any thoughts or suggestions would be very much appreciated.

Topic by DaleR18    |  last reply


LED sound sensitive Equaliser. How to do it?

I have this idea for a house project. I want to build a LED sound equaliser that would spread on an area of up to 40x80 cm. That would imply LED positioned at a distance of 4cm one of each other; 20 columns of 10 leads each.  I would then like to cover each separate coloured led with an opaque plastic square to give the panel the grid-like look that an equaliser has, panels that will illuminate with different colours due to the light coming from the LEDs underneath them. This (the finished panel) would go positioned under a the glass from a coffee table, giving it a rather nifty look when the music it`s playing (almost all the time).   I know what i want to do with the actual table, but i dont really know where to start with the LED panel (done some amateur electronics a long time ago, but i could say i`m at the low novice level).  Would that even be possible, having to connect 200 leds at the same time? Please let me know if there are any projects that could help me (regarding the circuit/ power supply/ recommended LEDs), and share with me any of your ideas that could help me reach my goal.

Question by AlexandruF6    |  last reply


Light Sensitive Chicken Coop Door

Hi, I recently started keeping my own chickens and have really enjoyed the whole experience. The chickens were all really friendly and provided hours of amusement. Until a few weeks ago I had 4 of our feather friends in a nice Coop. That was fine until one night, for the first time ever, we forgot to close the door to the coop. Unfortunatley the fantastic Mr Fox must have been casing the joint for some time and siezed his opportunity. Three of the chickens were nowhere to be seen, the fourth lay dead under our rhubarb. So why am I telling you all this sad tale? well, I have stumbled accross a solution to this ever happening again. On Ebay I can purchase a 'VSB Automatic door opener', but it'll cost about £100. This is also not ideal as by current door for the coop opens horizontally not vertically, which would mean replacing the door. I'm also concerned that the light unit will be underneath a roof with this design, so it may close prematurely, leaving the chickens trapped in the yard. I'd like to have a go at making my own automatic closer for the coop, possibly solar powered (with a rechargeable battery) that could be mounted to the side of the coop. I don't mind adapting the door to make a vertical opener, if that makes the project easier. The specs for the bought units are: Compact geared motor with steel gears ensuring extremely long life. Battery life now 3 to 4 years with an HS sliding gate or 2 years with a 1.5-kg sliding gate featuring a 50-cm lift. Dorkeeper operates considerably more quietly now. Thanks to 40-kg breaking strength, the rope can hardly break any more. Electronic shutdown of motor within one second when the sliding gate is blocked.Once the blockage is removed, the sliding gate will be opened within three minutes. The strain on the batteries is virtually negligible. Tensile force: 200 g to to 3 kg, with idler UR on the sliding gate (pulley) 6 kg. Does anyone have an ideas how to make something suitable/similar? I have included photo's of the coop showin the current method for closing (Metal foding arm)

Topic by Nemesis201077    |  last reply


I need help hacking a solar light to use as light switch.

I recently bought some hanging multicolored led lights (they look like UFOs). They use 3 "C" style batteries as their power source. What I would like to do is make them light sensitive. Basically letting them turn themselves on when it gets dark. If anyone has any ideas on how to do this, your help would be greatly appreciated. I'll try and post some pics of them later today.

Topic by taz313    |  last reply


Is it possible to use Piezoelectric sensors to measure weight, like a hypersensitive set of scales?

If Piezo is not appropriate in this case, which would be the best technology / method of weighing to use? I want to create a a hypersensitive set of scales which read up to 1 kg of total weight. But I want to create it as flat and flexible as possible. The footprint would be roughly 115 x 55 mm and be used to measure the weights of small foods for the prupose dieting, can anyone help me?

Question by oscarpf    |  last reply


Touch Sensitive counter project question

Hi everyone, Great to be part of this community. I am trying to make a touch sensitive counter, the sensor has to be as flat as possible, something like a thick cardboard, or I can put a flat sensor in between two sheets. It needs to handle about 10-20lbs of weight. It will go under fabric like carpet, so it cannot be super sensitive, clickable is fine. It will be connected to a very simple 1 or 2 digit counter. Any suggestions? PS: Eventually I'd like to upgrade this with a system that can instruct something else, for example 5 counters, display etc. Or be able to use bluetooth or wifi or arduino, and be able to count back. For example input 10 and it will count 1/10, 2/10, 3/10, etc..

Topic by tees_deney    |  last reply


FSR - Conductive foam readings

Hello! I am making a prototype of a force sensitive resistor, and i am using, to old 97%kobber coins, metal sheet and a tiny piece of conductive foam that i got from a tv-repair shop. The setup is not very good, but its a start, and i am planning the next move for better results... Now... I want some decent understanding of how the readings work, and why I get these results.. First test, are written with black, and and as you can see it, has the same amount of space between 0-1kg and 1-2kg, but 2-3 and 3-4 changes to a very small space? Why is that? Second question is, that i have used the x10, to read larger forces. 0-2,5kg and 2,5-5kg has same amount of space. Will the space decrease too, when getting further up the scale too?  - I know the conductive foam has its limits too, but just to be clear of my readings. Thanks in advance! I hope you can see the readings on the picture..!

Topic by L33boy    |  last reply


What transistor should I use for a touch-sensitive switch?

I would like to run a 5v green laser diode off 4v (because it is easy to blow at 5v) using a touch-sensitive switch. I hope to use the switch with a thin layer of plastic in front but if the current from a human cannot pass through to activate the switch then I'll leave that feature. Anyway, I would like to know what Darlington transistor or regular transistors (to make a Darlington pair) to use that will operate the laser diode momentarily and safely. Thanks, Jim The link to the laser diode: http://www.dealextreme.com/details.dx/sku.10094

Question by pyro-jim    |  last reply


ESD sensitivity of a VFD/LCD module? Answered

I have seen images of people experimenting with these modules but in the datasheets it says that they are sensitive to electrostatic discharge, is there a way of protecting them without cases (to use them for experimenting with micro controllers)  would zener diodes on the inputs and power supply make them less sensitive, or is it a overstressed problem to cover the manufacturer?

Question by 12V    |  last reply


Is there a clear, heat sensitive spray glue?

Working on a project that I would like to fuse by heating it.  I want a clear spray.  I have found something called spraynbond which is for fabrics but I am not sure if it is clear or what it is made of (to make sure it won't damage something).  Any suggestions?

Question by JosephH13    |  last reply


Motion sensitive, people tracking light

So I stumbled across a really neat lighting project on yanko design and I'd love to make one so I'm trying a two pronged approach: I'm emailing it's developers to ask nicely what they've done to do it, and conferring on this idea with the community here as I'd love to work on it to make more effective/ directive lighting. No need to light my whole reading room if I can make it smart. Here's a link to the project to see what I'm yammering on about: http://www.yankodesign.com/2011/05/30/cup%E2%80%99o-lights/

Topic by incase    |  last reply


Motion sensitive, LED flicker circuit?

Hey clever people! I am working on a project with a friend which is basically a backlit sign, it will be lit with a 4-5 meter LED strip which runs on 12v. But will be mains powered. (just the LEDs are 12v) I am looking to achieve an effect whereby the sign has a passer by and is disrupted, flickers (randomly) for just a few seconds but then returns to a solid light when there is no or less movement/change in light.  I am open to all kinds of suggestions and have some flexibility within the project to allow for extra components. At the moment I do not have any components, I may however have access to a raspberry pi or something similar! I hope someone can help! If successful I will be sure to incooperate this and the help in to my very own instructable for the initial project. Thanks in advance! Alex

Question by astrixx    |  last reply


Need help to make my shirt vibrate!!!

I have a dream of having a shirt that vibrates when i hug people, i think it will be like a nice surprise when it happens. I have looked around and no body makes anything like this, none i can get at least. i have seen on here how to make little vibrating motors and thread pressure sensors but i have no clue how i would go about combining it all into a shirt. Really need someone to help me make this reality so if you think you can or know someone who can please contact me!

Topic by jaraiza8    |  last reply


Can i make a touch sensitive button? Answered

Im working on a project that needs a non-tactile button switch. mainly because i am rebuilding the shell and the original button design wont work anymore. there isnt enough space for a tactile switch so i need somthing that can see when i am touching the surface, but it needs to be a rather simple circuit since i dont have a very good access to ICs. if it helps any, the button has a metallic paint that is conductive, and there is a part beside it with the same paint. is there any kind of circuit i can build that allows me to make use of that metallic paint and use it like its a tact switch? any help is appreciated, i do have a 555, a couple L/R audio op amps and a NAND gate. thanks.

Question by zack247    |  last reply


Tactiontape - Touch Sensitive Tape for Rapid Prototyping

Hi everyone, Tactiontape is a one-dimensional touch sensor that curves. It's designed to make building interactive physical prototypes easier, even ones with non-planar or complex surface geometry. It functions as a flexible potentiometer and uses a strip of graphite to express a linearly resistive electrical signal, one that corresponds to how far along the tape you've touched. Each sensor is hand-made using materials from an art supply store. Here's a demo: http://www.youtube.com/watch?v=0ggYn70TpZY For purchasing, photos, and more detail: http://www.etsy.com/listing/87989636/tactiontape-curved-touch-sensors-for

Topic by davidholmandotme  


Need help with Led project (time sensitive)

Need help with Led project (time sensitive) Hello I am currently working on a project that has less than 3 weeks till the suspense date. One aspect of the project I will be adding some LEDS. I want these LEDs to flash. So I got the following stuff for this project: LED Flashing kit MK102 by Velleman from Fry’s Electronics 100 rectangular flat clear 2mmx5mmx7mm LEDs (DC 3V 20mA) 400 DiCUNO 3mm LED assorted colors Forward Voltage: R/Y 1.8-2.2V B/G/W 2.8-3.2V Max Current: 20mA The issue: Ok so I want to take the LED flasher kit and instead of using the two supplied red LEDs I want to run two series of LEDs. One series will have two flat clear LEDs and one clear 3mm LED. The second series would have one flat LED and one 3mm clear LED. I have other colors but I figure if I stick with the clear LEDs, it makes everything simple and I will simply paint the LEDs the color I want. I would like to use all the other circuitry that comes with the kit and simply add each series where you would normally add the two red supplied LEDs. This kit runs on a 9 volt battery. So, I am assuming that I can simply replace the supplied resistors that come with the kit with ones that account for the LEDs I want to use? I am attaching the diagram from the kit for clarity, I hope this is making sense. Any help you can offer would be appreciated.

Topic by 11b30b4  


sensitivity of servo that is controlled via android phone

Good day everyone! just like to ask for an assistance on how to make the motion of the servo motor more sensitive with the tilt of the android phone... our program was to control the tilt of the ball maze board via android phone... our code was also given... we are just wondering if this is just the limitation of the Bluetooth connection... we are using amarino application also for the connection between android phone and bluesmirf... here's the code... #include #include float data[3] = {0}; int intdata[3] = {0}; int i = 1; Servo myservo; Servo myservo2; int pos = 0; // MeetAndroid meetAndroid(); // you can define your own error function to catch messages // where not fuction has been attached for MeetAndroid meetAndroid(error); float previousdata = 0; int elapsedtime = 0; void error(uint8_t flag, uint8_t values) {   Serial.print("ERROR: ");   Serial.print(flag); } void setup() {   Serial.begin(115200); //begin serial link @ 9600bps   // register callback functions, which will be called when an associated event occurs.   // - the first parameter is the name of your function (see below)   // - match the second parameter ('A', 'B', 'a', etc...) with the flag on your Android application   meetAndroid.registerFunction(floatValues, 'A');    myservo.attach(9); //Attach the servo to pin eleven   myservo2.attach(10); } void StopCar() {   myservo.write(90);   myservo2.write(90); } void loop() {   myservo.write(90);   myservo2.write(90);   meetAndroid.receive(); // you need to keep this in your loop() to receive events } void floatValues(byte flag, byte numOfValues) {   // create an array where all event values should be stored   // the number of values attached to this event is given by   // a parameter(numOfValues)     // call the library function to fill the array with values (floats)   meetAndroid.getFloatValues(data);     for (int i=0; i<3;i++)   {     meetAndroid.send(data[i]);//Used for debug purposes   }   if (-10<=data[1]<=10)   {      intdata[1] = int(data[1]); //Cast the X axis float value to int      intdata[1] = intdata[1]+10;      pos = intdata[1]*9;      myservo.write(pos);   }   if (-10<=data[0]<=10)   {     intdata[0] = int(data[0]);     intdata[0] = intdata[0]+10;     pos = intdata[0]*9;     myservo.write(pos);   }   if (previousdata == data[0]) { //If the data's still the same (It should have been changed by the meetAndroid.getFloatValues(data) function)      if ((elapsedtime-millis())>=1000) { //If the car has lost the signal more than 1sec, then stop the car         StopCar();      }    }             }

Topic by maevalen    |  last reply


Is there any way to make a touch sensitive switch using an OP Amp? Answered

I just saw an i'ble about making a touch sensitive switch. The problem was that it used 3 transistors, and I wondered if there was any way to make one using only an OP Amp. Thanks.

Question by arhodes18    |  last reply


des leds qui r&Atilde;&copy;agissent au son mais syst&Atilde;&uml;me non branch&Atilde;&copy; directement &Atilde;&nbsp; la sortie du son

Bonjour tout le monde, j'aimerais de l'aide sur un projet qui me tient à coeur je suis passionné de diabolo, je pratique moi même et j'aurais aimé créer un kit lumineux à incorporer dans le diab et que les leds qui seraient dans ce kit  réagissent a une musique environnante ( une musique provenant d'une chaîne hifi par exemple ) et tout sa sans qu'il y ait de branchement qui viennet sur la chaine hifi. je voudrais que les leds régissent exactement cmome les leds dans le projet suivant: https://www.instructables.com/id/Music-LED-Light-Box/ mais sans fil qui sort du système et avec de composants petits pour que le système puisse rentrer dans les calottes de mon diabolo (idéal ce serait un circuit imprime qui fasse  10cm sur 10 cm max) i vous connaissez quelque information qui pourrait m'aider a mener a bien mon projet merci répondre sur ce topic je vous en serait reconnissant merci et bonne journée

Topic by hypolite    |  last reply



i need a light and motion sensitive cat scaring device.

I need a noise making motion sensitive device that only works when there is no light. Thoughts: want to use a plug in (no batteries) light sensitive night light (these come on when it's dark) and have it power something that is a motion sensitive noise maker that would scare a cat.  the point being these would go in a bathroom and i only want them to be active if the lights are out. hopefully cheap as I need to make two of these. willing to rip apart toys or other electronics that are easy to get. Thanks for any advice

Question by princew    |  last reply


How to increase the light sensitivity of a DARK SENSOR CIRCUIT?

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 turn off the light, I have to illuminate the LDR with a external light source and that too very close. What I want is that the LED should light up only when there is complete darkness. How should I modify the circuit to increase the sensitivity?  The circuit diagram is as given below.

Question by Arijit Chatterjee    |  last reply


How should I adjust my computer's mouse sensitivity/speed?

I have a razer deathadder mouse and was wondering, what should I use to adjust sensitivity/ speed of my mouse? Should I adjust the sensitivity in windows xp control panel, the razer drivers or in-game settings? And what should I set the ones I shouldn't adjust to? To the middle setting, the highest, or the lowest setting? Thanks

Question by tudgeanator    |  last reply


how to make a metal detector sensor for high sensitivity

Hi everyone Could you please help me... : ( how to make a metal detector sensor for high sensitivity examples of metal objects the size of 1mm the use of these sensors for metal detection in food security

Topic by RickyS18    |  last reply


How to replace mini microphone with more sensitive mic?

Hi I am trying to replace mini microphone (is very similar to mobile phone microphone) of Audio bug with more sensitive Standard electret microphone with intention that it pickup sound from more than 1 metre distance, and in doing so I am getting too much noise in Audio bug out-put. Do I need pre-amp? Is there any better way to do it? If pre-amp then how to harmonise out put of pre-amp to the input of audio bug? Any help..... Thank you.

Topic by ksaus    |  last reply


What exactly do light-sensitive elements react to? Answered

I had an old (about 1970s) large power transistor (I think it was a field-effect one, but I am not completely sure...). Knowing it is supposed to be light-sensitive I took the top of the case off, and it has a small EMF between the collector and emitter when exposed to light. But the EMF from directly under  electroluminescent lamps in the school corridor is about 10 times smaller than from lying on a sun-lit windowsill. So light-intensity can't be the only thing the EMF depends on... But what is the other thing?  PS It can't be UV, because well... we have glass in the windows at school, although it risks to get broken, as there is a football cup at the moment.

Question by gruffalo child    |  last reply


Suggestions for a sensitive, hall effect sensor to be used with an arduino?

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 magnet is in the neighborhood - say at least 6".  So the range and shape of the field of detection is important. Imagine that we're playing a game of "which hand is the strong rare-earth magnet in?"  I have a small hall-effect sensor hidden on my palm.  What type of non-latching hall effect sensor would pick up the field through the hand from a distance of about 6 inches or more?

Question by konjurer    |  last reply


Does anyone know of a cheap touch sensitive button?

Hi I am wanting to replace a keyboards buttons with touch responsive ones, and as I am in capable of any cuircitry work, I wonder if any one here knows a cheap and reliable one that I can buy in the uk, and put in place of the buttons. It can be either capacitive or resistive, although I really dont want to have to punch the characters to get a response. This is my first time posting here, and so I may have messed something up. -James

Question by therimmer96    |  last reply


CRIUS GPS module not sensitive anymore. Any ideas? Answered

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 well as it used to. It still works, but instead of taking a few seconds to get a lock, with 7-9 satellites detected, it seems to take 5 to 10 minutes with only 4-5 satellites. All the while it is acquiring a lock, my battery is draining with the ESCs on standby and the gimbal motors drawing an amp or two. The ceramic square top seems to have been coated with a metal square, and that is scratched off in one corner and showing areas of damage. I thought this is just cosmetic damage, but is that actually damage to the antenna? I don't know much about GPS RF voodoo. How do these GPS antennas work?

Question by -max-    |  last reply


Light sensitive/remote pet door battery powered

Hi all i have scoured the site but cant seem to find a project that i need, and would therefore benefit from any help and advice on how to build an light sensitive automatic door opener for our chicken coop. it seems an obvious project to me,, hopefully one not too hard that i can do with your help. we have a barn thats too far away from the electricity, so it needs to be self powered by battery. i can look into trickle carging the battery by solar seperatley i am sure on the site. but, the wife is sick of having to go each night and shut the chucks in to keep them safe from the fox, and then open up every morning. we were wondering if we could use a standard light sensor you find on the cheap security lights at the DIY store, that would trigger some kind of motor or catch etc to slide or raise a door. then if possible, to do the opposite when the morning comes. if the LUX sensor is not possible, then maybe on a timer, or even posibly remote. i need help and advice on the whole thing, as i have no idea on what type of mote, (if i need a motor at all) i need, will it burn out if it has power all the time?, how to stop it? loads of questions i cant even think of support with your answer would be appreciated. thanks in advance

Topic by rockrat    |  last reply


Arduino LDR tachometer (RPM counter)- not sensitive enough ?!?

Ladies & Gentlemans  ... I would like to ask you, what I'm doing wrong, in this RPM counter ??? As mentioned in my previous questions, I 've got an ARDUINO and I started with my first part - of my project. To count RPM / or speed. I'm using a LDR (light dependant resistor) and green laser as light source. The scheme is like this: + 5V ------- LDR -------------Analog pin 1                                     \                                       \--------resistor (220kOhm) --------- GND The code for this project looks like this : int LDR=1; // LDR is on analog port 1 int val=0; // this is the value, I get from the LRD void sextup(){  Serial.begin(9600); } void loop() {  val = analogRead(LDR); // read the value getting from LDR Serial.println(val); if (val<1018) {delay(4000);} } To explain the value 1018 in the IF condition ... when pointed the laser on the LDR,I get value from 1019-1020. So my idea was, when the value decrease just by one or more ... let me know, that the laser beam has been interrupt. But I realised, that I can cross the laser beam very quickly, and the LDR/Arduino will not notice it. I really don't know, where I'm going wrong. My few suggestions are : 1. wrong method - to use LDR ... should I use something else ??? 2. wrong RESISTOR value ??? ... should I change to different value to make it more sensitive ??? (I tried 2 different values = 220kOhm, 46kOhm ... that's what my voltmeter said :) ... but with both of them I have the same result ) 3. should I use different code ??? Any ideas ??? Thank you in advance for your answers. Zholy

Question by zholy    |  last reply


How can I change the sensitivity on a 360 controller for the pc?

I'm trying to play fps games (Marathon with the Aleph One game engine) on my computer using joytokey and a wired 360 controller. Unfortunately, the sensitivity is so high that by accidentally tapping one of the joysticks, the game responds much faster than i want it to. That, and the joysticks don't always go directly to the center, so after i press the joystick one way and I release it, the controller keeps going that way. It's really irritating, and i can't seem to figure it out. Thank you to all who read and respond.

Question    |  last reply


Need 3A Touch Sensitive LED Dimmer circuit.LED voltage is 2.9-3.5,0.7-3A.?

Input should not more then 12volts it is better if circuit works on 5volts,but ON/OFF and dimming will be touch based.

Question by Faizan Hamayun    |  last reply


how do i mod my xbox 360 with sound sensitive strobe LED's?

I have seen the xbox 360 LED mods where the color of the LED lights stay solid while the system is on. After going over the instructions carfully i saw a 360 console with sound sensitive strobes and i was wondering if there were different instuctions for the strobe or if it is the same process with different LED's

Question by DEAD-26    |  last reply


Ok, how the heck did they make this sweet water sensitive LED panel?

Http://www.thisiscolossal.com/2012/08/water-light-graffiti-a-moisture-sensitive-surface-embedded-with-leds-creates-illuminated-art/

Question by prismspecs    |  last reply


i'm searching some high sensitive metal like mercury if you know some other please share ?

I'm searching some material in which a very heat can flow with out destroy  the metal

Question by maheshs3    |  last reply