How can i recheck my connections?What are the general problems regarding Lcd displays?

I just need to know regarding the buzzer module ...I have been using buzzer instead of  a buzzer module.Is it fine? ..Although it works fine.And please let me know the general troubleshoots related to LCD displays .I think my circuit's working great except for the lcd part. I am done uploading the code.But the LCD doesn't show any temperature values.Please help me

Asked by achyuth93 3 years ago

I need to build a light sensing circuit for a class project.

Hi, I need to build a light sensing circuit for a class project. I have already built one circuit using a 741 opAmp chip, a 1 meg ohm photo cell, a 1 meg trimmer, a 1k, 100k, and a 47 ohm resister, and a 2n2222 transistor  as well as a 12vdc relay.  The circuit senses the light and the sensitivity can be adjusted by the potentiometer.  It works great for tuning it in to need a certain amount of light intensity to trigger the relay. The problem is i need to be able to put limiting factors on it.  I need to be able to set it to turn the relay on if a certain intensity is reached, but not turn on if the intensity gets to great.  Is there anyone who can help me with the schematics on how to achieve this?

Asked by bambam1.61803399 5 years ago

What power supply will I need for this instructable?

I'm currently working on the instructable below and am having powers deciding what type of power supply I need to run it smoothly. I have found a number of LiPo boards and batteries, but all only run up to around 3.7V. Please could someone recommend a website or shop within the UK where I may be able to purchase a suitable power source? I notice from the schematic on the following page that this may need to be at least 5V to be successful. Kind regards, Andrew.

Asked by kugarweb 7 years ago

How do I connect the phototransistor and emitter in this tutorial?

Hi, I'm currently working through the above tutorial and am struggling with setting up the Phototransistor and Emitter. There is a circuit diagam on the third page of the tutorial but I cannot work out how to connect the Emitter and Phototransistor to the rest of the circuit. If anyone could advise me further I'd be very grateful. Kind regards, KugarWeb.

Asked by kugarweb 7 years ago

Proximity Sensing with the Arduino? Answered

I am looking for a way to use the arduino, an IR emitter and an IR detector to use for proximity sensing. I have looked at a lot of tutorials but none of them seem to deal with detectors that only have two pins, most are for the sharp sensor. I am looking for a cheap alternative and would like to stay away from the Sharp sensor. I want to be able to pulse on and off the IR emitter and be able to read the reflective beam with the IR detector. I was able to do this with a reversed led connected to the IR detector, not sure why that worked but it did. I am trying to find the proper way to wire and read the IR level. When the IR emitter pulses, I want the detector to take a reading and then I am going to use that reading to determine how bright or dull a connected LED will be. Any help is greatly appreciated and I think with a little bit of guidance I will be able to do this =) ... wouldnt mind taking pictures and making an instructable out of this either ;)? Here are the emitters and detectors I am using:

Asked by afreeland 7 years ago

Control your pc with Kinect sensor?

I am running windows 7 64bit, after getting the xbox kinect for my 360, I thought it would be a good idea to control my laptop with it, I have installed the necessary drivers to use the motor, audio and camera although the programs for keyboard mapping won't connect to the camera. I have FAAST, Open NI prime sense and yet none of these will pick up the sensor. here are some websites I have looked at: I have followed all the steps on the open kinect website yet it is still not working. Any help would be appreciated, thanks in advance.

Asked by freerunnin1 7 years ago

230vac extract fan speed control - help

Hi I'm just in the process of refurbishing the bathroom of a flat I bought. It's all been plastered out already and I realised I've no extract! So, I created a plenum at hi level and mounted a fan under floor and have ducted it out. I want to run the small AC extract fan 24/7 at low speed (kinda tick over speed) and then switch it to hi speed when either the humidity goes up (cos the shower is running) or the light goes on (assumes someone's using the WC!). I can't get to the lighting wiring so I'll need to sense that remotely. I can fit a humidity sensor in the duct work. I've tried everywhere to find something suitable with zero joy. Is anyone here able to point me in the right direction?

Posted by ListysDad 6 years ago

does it makes sense to delete an instructable

Does it makes sense to delete an instructable because it isn't a succes or popular?

Posted by geo bruce 5 years ago

Does it makes sense to finish the steak with butter and herbs like in ? Answered

Does it makes sense to finish the steak with butter and herbs like in the previous lesson?

Asked by anton.fedoseyev 1 year ago

Super Magnetic Senses, Achievable?

If I combined Prank's tutorial on magnetic senses with an electromagnetic coil, could a more acute sense be achieved? Also, how would one go about making it look less conspicuous than a battery and a nail duct taped to your hand? And, would one be able to sense a Ferro fluid with this sensory upgrade, or no? Thanks in advance for the answers, and I apologize if my magnetic ineptitude put a damper on your day.

Asked by geckits 9 years ago

how to make a circiut that senses and responds to megnetic fields? Answered

I need to make a circuit to power an overunity generater

Asked by nerd7473 6 years ago

6th Sense Device (To Sense Magnetic Fields)

I saw a program not too long ago (I believe it was from the UK) about an experiment that was done in which they outfitted a participant with a device that contained a magnetometer, as well as some number of vibrating motors mounted on a belt along his waist. It was designed so that overtime, his brain interpreted this incoming data as a "new sense" which allowed him to literally FEEL the magnetic directionality of the Earth. I'd really like to try this for myself, but am no good doing electronics projects from scratch. (I need guidance)  So is there anyone here who is up to the challenge of attempting this, or can anyone at least show me how it might be possible to create this myself.  I'd love to augment my senses full time and become a super human. haha Thanks in advance for any and all help. -Nick

Posted by foxymcfox 7 years ago

i want want programme to send sensed parameter to cloud by using ardiuno with interfacing esp8266 wifi model plz

Send data like temp. ,air ,humidity parameters which are sensed by sensor by using ardiuno interfacing with esp8266 wifi model 

Asked by sachinpatil 7 months ago

Sound Sensative LED

I wanted to make an LED board that I could wear on my shirt or hat that can sense bass sounds (like in and around 80Hz). I play House music, and it would be an awesome visual aspect, and wondered if someone had an instructable on it. Thanks

Posted by ColinMcNutt 11 years ago

Using a photo sensing servo.

Hey guys I am trying to get a servomotor which is attatched to a photo sensor to read a light source.  I have servo attached to analog pin 1 and using analogRead to read the value, but I want the maximum value it reads.  Any ideas

Posted by dsm5286 5 years ago

looking for; preassure sensative air valves the size of tire fill valves,? Answered

I need a small valve that will sense low air preassure and fill as required. also looking for similar air valve, but with ability to remotely, (radio) control air preassure.

Asked by braadkarma 9 years ago

Is there any technology that can help people to smell and taste?

Recently, my mom had a concussion and she lost all senses of smell and taste.  Is there any technology out there that could possibly help her to regain these senses like a hearing aid helps you to hear.  Thanks!

Asked by DoctorDv 6 years ago

Arduino based Alarm Clock that uses 5-Senses!

Hi.   We want to make an alarm clock that uses all five senses to help wake you up.  However, at the moment we are just focusing on three of the five for our prototype; sight, smell, & sound.   Does anyone know of similar project that use an time-activated scent release system?  This is the part of the alarm clock that is giving us the most trouble.  Or even better--has anyone heard of a project similar to this where all five senses were used?   We really need some advice on the process and the technical portion of the prototype.  Any ideas, links, tutorials, pictures, diagram, blogs, articles--they could really help!   Thanks.

Posted by hthnc-student 5 years ago

Is it possible or make sense to run an AC wind generator directly into an electric heater ?

I was wondering if it would be possible to run an AC generator directly into an electric heater or water heater instead of using a DC generator to batteries. If this is possible or if makes sense to do, what would be the best motor/generator to use with a VAWT system. TIA.

Asked by dans123 9 years ago

Animal senses better than ours???

We all know dogs, lions and other Beast can hear/see/smell a 100 times better then we can but can animals taste better than we can? Just randomly thought of this when i was reading the life of Pi.

Posted by i make shooting things 10 years ago

Does it make sense to compost indoors in an apartment? Answered

Or do you really need a big pile or bin outside in a yard? I imagine it would smell too strongly to keep inside.

Asked by rachel 9 years ago

how to make a reed switch for sensing a magnet from 4 to 5inch distance? or a substitute with RF Answered

Experts, pls guide, that i want to know the way to make a reed (in DC) have to sense a magnet from a distance of 4 to 5inches. did small reed will act so ?? if a yes, then which specification have to look?? or did there any circuit or something for making it much more powerful??

Asked by shinojmahe 4 years ago

Clever ways to use ordinary parts to sense temperature? Answered

While designing a flyback driver circuit I figured the best way to cool the transistors in use would be to use the stock intel CPU cooler. They are small, compact, and effective, and the delta fan is of reasonable quality. I would like to control this PWM (4 pin) fan with the 2 extra comparators I have left over from my LM339. What common passive (or active) components have a large enough temp-co to allow their use in sensing tempurature? Or will I just need to buy some specialized ICs purpose designed for this task?

Asked by -max- 2 years ago

Pulse Sensing Heart Pendant

Hey Guys, I would like to create a pendant that would light up from my heartbeat, that I could give to my girlfriend for valentines day, any idea how i could do this?

Posted by Ahren07 3 years ago

Mr.Common sense lost

No common sense these days, eh? London Times Obituary of the late Mr. Common Sense 'Today we mourn the passing of a beloved old friend, Common Sense, who has been with us for many years. No one knows for sure how old he was, since his birth records were long ago lost in bureaucratic red tape. He will be remembered as having cultivated such valuable lessons as: Knowing when to come in out of the rain; why the early bird gets the worm; Life isn't always fair; and maybe it was my fault. Common Sense lived by simple, sound financial policies (don't spend more than you can earn) and reliable strategies (adults, not children, are in charge). His health began to deteriorate rapidly when well-intentioned but overbearing regulations were set in place. Reports of a 6-year-old boy charged with sexual harassment for kissing a classmate; teens suspended from school for using mouthwash after lunch; and a teacher fired for reprimanding an unruly student, only worsened his condition. Common Sense lost ground when parents attacked teachers for doing the job that they themselves had failed to do in disciplining their unruly children. It declined even further when schools were required to get parental consent to administer sun lotion or an Elastoplast to a student; but could not inform parents when a student became pregnant and wanted to have an abortion. Common Sense lost the will to live as the Ten Commandments became contraband; churches became businesses; and criminals received better treatment than their victims. Common Sense took a beating when you couldn't defend yourself from a burglar in your own home and the burglar could sue you for assault. Common Sense finally gave up the will to live, after a woman failed to realize that a steaming cup of coffee was hot. She spilled a little in her lap, and was promptly awarded a huge settlement. Common Sense was preceded in death by his parents, Truth and Trust; his wife, Discretion; his daughter, Responsibility; and his son, Reason. He is survived by his 4 stepbrothers; I Know My Rights, I Want It Now, Someone Else Is To Blame, and I'm A Victim. Not many attended his funeral because so few realized he was gone. If you still remember him, pass this on. If not, join the majority and do nothing.

Posted by Mr.Commonsense 9 years ago

Bi-Directional Led Sensing

Hello, I have been working on Bi-Directional Led sensing for a school project. I have managed to build a prototype with just 1LED and a processing sketch to visualize the input which works perfect. Also I built a version with 2 LEDs which is not as good as the previous one. I can get response from the both Leds but they are interfering with each other most of the time. I am using the built-in pulseIn function of the arduino to measure the time of the Leds go from LOW to HIGH. With just one led it is perfect, but when I add more then 1 LED, two or three LEDs , lets say, they go into a weird condition. If anyone have some experience with Bi-Directional Led sensing with more then 1 LED, I will be glad if you share. Thank You

Posted by tolgainam 9 years ago

How does Makey Makey sense touch?

I have the source of Makey Makey and tried what I thought was the same method that it uses, but it didn't work. Can anyone make it more clear?

Asked by VirtualBoxer 5 years ago

Cool Shirt

Hi there - wonderful minds! I am seeking some help here in creating a shirt that should sense the temperature or sweat and then itself sprays some coolant to cool off. Much useful in summer season ofcourse

Posted by BeautifulBrain 3 years ago

darn XP wont sense my usb

I have a little problem. for almost anything and everything i plug into my usb ports, my XP says there's an unkwon device, even my flash drive, but it works on my other computers. does anyone have some advice?

Posted by wolf555hound 9 years ago

give me simple diagram of laser sensing security system please?

I am asking about the project "protect your house with laser beams"and could not understand its circuit diagram so please show me the simplest circuit diagram

Asked by chirag9828 7 years ago

I want to be able to sense the distance to a car driving in front of me, what kind of sensor would be best?

I am trying to modify my cruise control with an arduino clone, and want to find a sensor which will give me the ability to sense the distance between my car and one directly in front of me. This will help me to let the arduino control the cruise control to adjust the speed to keep a safe distance without manually adjusting the cruise control. Any suggestions?

Asked by kikiclint 8 years ago

I need a motion sensing trigger for a D5000 Nikon.

Motion sensing or breaking an Infrared trigger (like a garage door safety switch config.) It would have to be a two stage switch - one to depress the camera trigger half way to wake up the camera, and two, to take the picture with a full depression of the camera trigger. At this point I have a remote trigger for my Nikon but don't know whether it will wake the camera after the camera has "gone to sleep" because it has not be used over the prescribed time.

Asked by jgrimes227 8 years ago

Help... keyboard problems

I need to know what wires go into what spot... make sense?

Asked by Katsense 7 years ago

why in the world "ible" ?

It makes me wince when someone uses 'ible in the comments section of an Instructable. It just seems wrong, it doesn't make any sense, and it seems lazy. How did this come about? Who thought it made sense? Why did the A change to an I when someone was lazy and chopped off the INSTRUCT?

Posted by Kris Jacobs 2 years ago

How to sense motion in sleep using accelerometer and Arduino Duemilanove ? Answered

I want to make an alarm clock that will monitor the motion of a person in sleep, and will trigger when the person is in motion. i have the code but i need the hardware and schematic.... the code is as follows:

Asked by thakur900 6 years ago

Drill bits? Answered

Generally speaking, is it worth the effort to sharpen dulled bits, or does it make more sense to just buy new ones?

Asked by ZoltronGoFish 1 year ago


Hi, I want to make an arduino for the shop that senses each customer coming and rings the bell automatically.How can I do it.?

Asked by lprasanth99 10 months ago

Soldering question? Answered

Is soldering pronounced [ SAW - TERING ] ? I was told this, but it didn't make sense to me that it isn't pronounced how it is spelled.

Asked by VinceJDJ 7 years ago

The Useless Machine ( Candle Version )? Answered

Hey Guys, I thought of an idea after watching the most useless machine. Why not make a machine that blows out a candle everytime it senses light near it? Could anyone make a circuit for this? I want it to be that whenever the light senser senses lots of light near it it turns on a dc motor fan. Thanks in advance -Prickly Potato

Asked by The Prickly Potato 3 years ago

arduino program to sweep servo when hall sensor high

I want the program to control the servo such that when the hall sensor senses the magnet the servo should sweep and when hall sensor again senses the servo should come to its original place so guys please tell me how to do it and also tell me connections

Asked by vipulg 1 year ago

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?

Asked by zack247 6 years ago