What about remote controlled circuits?

Yaar i want to know how to build that circuit wich iz RC controlled...i mean i want to create a remote controlled car...?

Asked by 9 years ago

How to make a Rf controlled small siren?

I need to make a small battery powered loud(120dB+) electronic siren that is turned "on/off" by a key FOB type RF remote. I am currently trying to train my dog to not dig holes, etc, and need a small siren that can fit on her harness collar. I need to be able to push a button on the remote to make the siren wail, until I release the button. remote needs to be RF not IR. Any ideas?

Asked by wolfsmane 9 years ago

arduino coding problem

Im working on a project of mine which needs an arduino to easily manipulate the PIR sensor and easily use its outputs via LED light. this is my current program. int ledPin = 13; int pinPir = 2; int val = 0; int led2Pin = 12; void setup() {   pinMode(ledPin, OUTPUT);   pinMode(pinPir, INPUT);   pinMode(led2Pin, OUTPUT);     Serial.begin(9600); } void calcLed(){   val = digitalRead(pinPir);   if (val == HIGH){     digitalWrite(ledPin, HIGH);     delay(5000);   }   else   {     digitalWrite(ledPin, LOW);   } } void loop(){   digitalWrite(led2Pin, HIGH);   calcLed();   delay(5000);   digitalWrite(led2Pin, LOW);   delay(2000); } im having a problem with how the sequence of the program works. when i test the project . its works fine. but while the program is running . it seems that it wont  recognize the input of the Pir sensor until the program is done? how can i intervene ? i want the program to go back to 1st step when the PIR sensor . detects motion. please help? thankyou :)

Posted by charmaineanne.bahia 3 years ago

Computer controlled timer

I am building an indoor hydroponics room to grow herbs and tomatoes year round. I would like to be able to control the lighting and the water pumps with my computer. Any ideas? Thanks!

Posted by InsaneLunatic 8 years ago

How can I control an arduino by a clock?

Can I have a clock which sends a single clock signal at required intervals of time and I also need to change the time of the clock frequently simultaneously

Asked by alendchristin 1 year ago

how to set up a rc for a device?if i have a boat how can i modify it such that i can cntrol it using a remote/joystick

I have a project to make and my prof has asked me to make this boat which can be controlled using a joystick...and i have no idea how to set up the radio control..plz tell me how to do it..how to control the boat using a joystick???

Asked by whamsy 8 years ago

Inside a Controlled Vapor Oven

I just got a used controlled vapor oven from a restaurant auction.  It works, but the evaporator heating coil turns off too early.  So, I've opened the thing up to investigate (and possibly rewire or reprogram).  Modernist Cuisine has cross-sectional views of inside a cvap (click look inside on Amazon and search for "cvap"), but if you don't have a copy, here are my pictures of inside a cvap.   Right now, I'm cooking a full bone-in pork shoulder for 24 hours that I brined in a 5% salt solution for the previous 24 hours.  

Posted by ewilhelm 6 years ago

temperature controlled switch

I I'm working on a water spray kit for my intercooler on my car and i want the pump to turn on when the air outside is => 50 and the intercooler is like 15-75 > then the air i want both of the them to be adjustable. I i could make it activate when its like >50 the and it activate 30 above that the out side air or something like that could and one help me out the a schematic.

Posted by dragon2144 9 years ago

How hard is it to make a computer controlled switch?

Hey guys, I was planning an instructable but I would need to create a program to turn switches powersource switches on and off. The switches would be for regular power sockets so I wouldn't have to modify the stuff I plug in. I have no idea how to do it, is this an easy problem? Where would I get the parts needed? Thanks for any advice!

Posted by anythingologist 10 years ago

How to make a voltage controlled switch using a BJT transistor?

Well i just want to know how to use a BJT transistor in a circuit to switch on at a particular voltage. Its for a charging circuit, i want to activate i transistor at 9 volts and the current from that to charge a 6 volt battery. I already tried putting a 9 zener diode at the base of a NPN but the turn on voltage was 16 Volts. I used a C5027R and Vbe is 7V and i am really confused with what Vbe really is.

Asked by josh1001 8 years ago

Im planning to make a robot with pure old fashond curcuitry. Any suggustions?

Im eventualy going to make a robot with no open face platforming, just IC'S and wires. Not atonomus, just a remote control. Forward,reverse,left,right thats it . Pretty straight forward. If you have any sugguestions or comments please post them.

Asked by Laserman595 8 years ago

How to create an Usb controlled rgb light that changes colour depending on input from pc?

Im trying to create an led array of 30 leds (10 red, 10 green, 10 blue) that recieve an input from the computer and light up accordingly. E.g. 10 Red, 0 Green, 10 blue to make purple I've found several projects that will light up the leds when the usb is plugged in but id like to control which leds are lit. Is anyone able to draw an circuit diagram for me or suggest anything to help me make this project as i can probably program something to send the output from the computer but its the wiring of the controller etc that im not so good at figuring out.

Asked by lostangel556 8 years ago

how do I connect limit switches to a sliding door system controlled by Visual Basic software?

The limit switch system must detect if the door is open and if it is, the whole system must be disabled.

Asked by khutso 8 years ago

well my rc car broke and i was looking for something to do with it

So i have a motor, some battery holders, and possibly some remote control parts but i have no idea how to work them. any suggestions?

Posted by FreakyDeeky 10 years ago

What size engine would I need for this aicraft? (details and pictures inclosed)

I am building an R/C extra 300 and am about to buy the engine, but im not so sure what to get. I think I should buy a 30. sized brushless or up engine, by what make should I get. I would like to power it electricly Details: wingspan= 4.5ft Lenth with cowling= 42 inches wieght w/ servos and pushrods but without radio, lipo battery, motor and speed controler. = 1lb 4 oz width (at largest part) 5 inches. Servos: 4.5v 1.5kg torque I would also like to know what speed controler and battey I would need. Thanks Oscar

Asked by oscarthompson 8 years ago

Need help/ideas for a (seemingly) simple USB, time controlled locking mechanism

Hello. I need help. A lot. But seriously, I need to fabricate a way to activate a door lock, via USB (this would seemingly be the easiest way, since a computer keeps accurate time), only during a preprogrammed time period. For example, I would program the lock to activate at 11:00 pm and retract (I'm assuming deadbolt here) at 5:00 am. Would something like this be possible? Thanks in advance.

Posted by Trivium12 6 years ago

Computer controlled crossover?

Hey guys, I've been wanting to ask someone about this idea for a while now. You know how you can get programs like SRS Wow that's built into windows media player? There are also other assorted Equalizer programs (with sliders) or for effect, to change how your music is playing. If these programs can do this merely with cpu power, is there a way I could have a source from the mic/input plug on a soundcard in one of my spare towers, and say, re-route it to the speaker/output on the card, but say, have a subsonic filter in place between the input and the output of the card, using only software? I'm pretty Effin sure this has to be possible, and yes I can take into consideration that there could be some considerable cpu usage for realtime playback. My goal would be to say set in place a 20 or 30hz cutoff point and then run that to my subwoofer amp, or use two seperate towers, and run my other subwoofers I have sitting around, but they need a higher cutoff point as they are only 8-10inch woofers. Could anyone lend a hand?? I know this has to be possible somehow.

Posted by Punkguyta 8 years ago

Trying to make music controlled leds with arduino?

Ok So I decided to take a netgear router apart, and it had a circle of 8 smd led's And I figured out the pinout to hook them up to my arduino (I know which wire goes to each led basicly) Theres one power input, and the rest are grounds, And I decided I wanted to make it pulse to music.  I want it to do two modes, (Maybe by the push of a button? Theres a button on the led board but idk how to use it. I know the 9 pins to make the leds work, but theres 3 left that I dont know what they do. I want to make one mode that will make all 8 pulse at the same time, And one that will make a pulse from led1 to led8. I have a button, My ipod, my arduino, the Led circle, and a speaker plugin. The speaker plug in plugs into my ipod, and it has a copper wire, a white wire and a red wire.  Im not sure how to hook it all together and write a code for it. So Im looking for some assistance.... Thanks! :D (I also added a picture of the led board, and of the speaker wire)

Asked by 'earl 5 years ago

Need help to make a project Answered

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 long with a tube connected to it's tip and the bottle would be inverted to allow gravity to allow the liquid to move down the tube. The idea is to get just 1 drop to drip from the tube. I would want the power source to be a rechargeable  AA 1.4v up to 8 - 9v rechargeable battery.  This will be my first electronics project so please keep it as simple as possible.

Asked by fred.salivia 2 years ago

Need help figuring out how to make LEDs come on when signal is sent to speaker

Hi everyone! I've finally decided to create something. But since i'm completely new at this i need some help I want to add some interior lights in my car, and i want them to be sound activated. Currently i have 4 cathodes connected to 2 sound modules wired into the cigarette lighter. The problems i have with that are if i change the volume on the stereo, i also have to adjust the sensitivity knob on both the sound modules and because one module is under the seat and one is behind the dashboard, they react completely differently. what i want to do is get rid of the cathodes and replace them with LEDs and i want to somehow get the set that will be under the dash to turn on when an audio signal is sent to the front speakers and the set that will be under the seats to turn on and off when a signal is sent to the amplifier for the subwoofer. The key thing on this project is that i don't want to have to adjust something every time i change the volume and i want it to actually match the music, not every noise that can be heard in my car. Also i'd possibly want to replace the switch that turns on and off the entire system with a 3 way switch to have one side turn on the sound activation and the other to have the lights steady on so basically i would need to know what i would have to buy and how to put it together... Unfortunately my experience with electronics is limited to assembling a kit from adafruit to charge my ipod with 2 AA batteries and making a stun gun out of a disposable camera so i'm hoping for a simple way to do this Any help, ideas, suggestions, anything like that would be greatly appreciated

Posted by sandlehat 8 years ago

Text Message Controlled Devices

For my school science fair, I am designing a circuit that will turn appliances on/off through their power cord by a text message. I am thinking of using the vibrating motor leads of an old phone to control it. Anyone who knows of a source on the Wide Wide World o' Web about such a circuit, or would like to help me design it (collaborate on an i'ble?), PM me or email me at westy158497@yahoo.com. Yes, I use the same name and password for everything!

Posted by timwest95 8 years ago

How can i make a rc care controlled by a keyboard?

Okay so I'm making this rc car/robot, decked out with the works. Right now, in my design plans, I'm planning on it including a webcam (with usb adapter) a Walkie Talkie system, so communicate is possible through this, a flamethrower for self defense, and yeah, a lot of the works. ANYWAYS..... I need to be able to control all of these functions and its mobile stuff from a distance, and a keyboard is the only thing i can think of that would have enough buttons to do this. Any suggestions on how to wire all this stuff to remote controls from my keyboard?

Asked by MatTmpkins 9 years ago

Remote controlled concrete trowel machine

Hello I do not know how to build this type of machine. I was hoping someone in this forum would be able to build one and share it with this community. I do not know if the machine is under a patent or not. If it is under a ptent perhaps certain aspects of it are not.The company that was building these was called Tibroc in USA. But they are no longer around. Anyway if someone can help me out and build one and share it so that I can build one that would be great.

Posted by dimatek 2 years ago

I need a computer controlled milling machine built for patent

I need a computer controlled milling machine that will be about 2'x2' frame and would be portable and able to be attached to a piece of metal sheet and capable of cutting plastic material. What I need it to do is duplicate a profile that a metal sheet has to plastic. To be able to attach this to a panel take a tracer that can copy the profile. I would like to ether partner up with someone or I would gladly pay for you to produce this machine. Please contact me at DMARR35@AOL.COM for more info

Posted by dmarr35 8 years ago

How would I go about audio modulating my Tesla coil so that it can be controlled by a keyboard of the musical sorts?

I used these videos http://www.youtube.com/watch?v=QDZnCOLZ394 http://www.youtube.com/watch?v=X2PrPHgOy04

Asked by remo2 5 years ago

Arduino controlled CNC Coil Winder

Arduino controlled CNC Coil Winder Hello World. This open source project that I am working on. Is an Arduino controlled CNC Coil Winder machine. Since I have the need for precise coil winding, a CNC winder machine is the solution. Machines like the one I am trying to build cost around $4,000-$9,000. I am building a machine with the same quality for under $300. Is hard to believe but is possible. The problem: Get rid of CNC software. I think that Arduino can do the job here. I am able to make it work with an standard CNC solution, but the problem is that I don't want to interact with a computer at all, and I am pretty much sure that an Arduino application can do the job. My progress is on the 85%. I have the mechanical part ready to go. Is the Arduino part where I am stuck. So far, I can keep going on with CNC software, but that is not my goal. I'll probably work on the Arduino solution later, but I'll really appreciate help with an Arduino solution. This is an Open Source Share-Alike 3 project. Cheers!~ Edit: The picture bellow is from a commercial Coil Winder and the only purpose is to illustrate what kind of machine I am building. 

Posted by G00 7 years ago

Arduino controlled lawn mower

Hi I  wants to make arduino controlled lawn mower as my Mechanical Engineering final year project  while doing so I’m facing problems such as which dc motor will be suitable for wheels and cutting blades  and driving unit for these motors.,which sensors are necessary for complete automation as well as coding required while implementing all these components. It is difficult for me to finding formulae to calculate torque and power.I want to make it process automated so that bot automatically move in rectangular area and if in between it’s battery gets down it should automatically go to charging point and come back to place where it stopped cutting when battery was down. For this which coding as well as interruption required is also a doubt for me.For all these operation which battery will be useful? And its capacity Also it will be helpful if all the components required for this project will be available from any single platform. For all these it will be helpful for me if I get some Ideas from here and move ahead in my project Any other links or suggestions wil be also helpful.If kit for above mentioned specs are available please contact on my mail id sarvankarpratik33@gmail.com Thank u

Posted by pratiksarvankar 2 years ago

Musical Lights

Hey, I recently saw http://www.youtube.com/watch?v=Yd3hzYAJzOo&w and i want to make that. I read the schematic at http://www.uploderx.net/dphrag/SCHEMATIC1___PAGE1444.jpg (that link doesn't work, use this one: http://www.buildlounge.com/wp-content/uploads/2011/10/xy88F.jpg  for it, but, I'm still quite confused. The parts that are the most problematic to me are the high, low, and mid pass filters. i  don't understand what they are, and how there made. If anyone could help me, thank you.

Posted by schumi23 6 years ago

Controlled Sodium Reaction? Answered

Is it possible to control a sodium or lithium reaction so it doesn't explode, it just quickly produces H2 and O2 which could be used in vehicle, so it needs to be safe, and fool proof.

Asked by jj.inc 7 years ago


Hi guys, I simply want to use my arduino to controll a servo by using a ir remote. Ive got all the parts as a ir reciver and also the remote. Does anyone know a good tutorial based on the ir system and program?

Posted by Kamokaki 4 years ago

How do I make a Sound Activated RGB LED Color Controller?

I'm building a mau5head costume for an upcoming deadmau5 concert, and I've been baffled as to how to make a sound activated controller for the RGB LEDs I'm going to put into the eyes. The end goal is to have the colors change on bass hits, much like professional DJ lights do when on sound to light mode. I've been looking for a solution to this for a few days, but simply can't find one. I'm hoping someone here can help Here's a visual of what I'm hoping to achieve (beginning at 1 min in): (I realize these are MIDI controlled via a usb in the back, I just want the same effect) Money is not really an object, but would prefer to keep it as cheap as possible. The LEDs are 4 pin (Red, Green, Blue, Ground)

Asked by simscube 7 years ago

how can i use my PIR sensor to activate the radioshack sound recorder module?

I know how to use my PIR sensor to alow power to something.... but now i already have power to my something and i need to to just act as a motion activated switch. im new to electronics and i need help. i also have an arduino.

Asked by XBLmonster 6 years ago

How to tell if your project is accepted

OK, one of my entries has been approved, I have posted three. The others say they are entered, but I have not received confirmation yet, and their pictures do not show up under "Entries" people are commenting on the items, however I can't see them in entries. ? How will I know when, and if I need to make changes, or resubmit the entry? Will they let me know if it does not meet the requirements? or what changes may need to be made? Thanks for any help. 

Posted by AoneD 5 years ago

Input problem with OpAmp-controlled ZVS Induction Heater

Hello, Idea: I'm trying to build a circuit which uses an OpAmp to drive 2 mosfets, which power the LC tank of an induction heater. The idea is to detect when the voltage over the LC tank crosses zero, and at that voltage I would make the 2 outputs of the OpAmp change states from fully on, to fully off. The two OpAmps (both inside one chip) have their positive and negative inputs connected to eachother, but with reversed polarity. This would make sure that one output is high, and the other one is low. Why use an OpAmp? I wanted the MOSFET gate switching to go faster as usually, because in the mazzilli circuit, the gate voltage actually slews at the same rate as the LC tank's voltage slews when it crosses zero volts. In the mazzilli circuit, it actually doesn't switch when the voltage is 0v, but when the tank voltage drops below the gate threshold voltage. This would mean that you are always switching current at 5v (for example) instead of at 0V. So for these two reasons, I wanted to try switching them with an OpAmp. Measurements: Probe I on drain 1, probe II on drain 2, and GND on the circuit's ground, gives me an expected result: when switching states, at 0 voltage of the LC tank, the voltage on one side stays low (since it's pulled to ground) and the voltage on the other side goes from 0v up to 50v, back down to 0v, like a sine-wave. Then the OpAmps switch again, and the one side now goes up to 50v as a sine wave, and the other one stays low at 0v. All good, this is working just fine. Probe I on the one differential input line, probe II on the other differential input line. Since this is nothing more than just a 1/10 voltage division of the previous measurement, I'm also expecting the signal to be exactly the same, but 11x smaller. -> problem: However, this does not happen. Because of some strange reason, as you can see in the scope images: Both channels go high, Twice per cycle, instead of going high only once per cycle, and staying low for the next half of the cycle. This really isn't good! Do the inputs affect the waveform in some way? Remarks about scope images: Image: 2 gates Blue gate voltage seems 'quite' fine. Turning on looks good, turning off is not really good becuse if tends to turn on for a short time once again, before it fully turns off. Yellow gate voltage is terrible. Turning on doesn't happen as expected. Voltage drops back to 0 for a long while which is very bad for the circuit. Frequency seems fine; 50kHz is as expected with the 14µH and 6µF. Image: 2 drain voltages These voltages were measured with a 1-10 voltage divider, and thus show only 1/11th of the actual voltage. This is getting close to what I want the LC tank to do. The voltages seem quite like sine waves. I suspect that if the gate voltages would be as they should be, these drain voltages would also be perfect sine waves. The regular sine amplitude of 50V is as expected, with a 24V supply voltage, but at the moments when the drain voltages strangely drop down to 0v, as you can see in image: '2 gates', at these moments the drain voltage seems to spike over 250V!! Image: 2 differential input lines This is the image which I don't understand. I expect the same wave as in the previous picture, but only 11 times smaller because of the voltage divider. However, the voltage does NOT reach 0v while the drain voltage does, and its shape is also completely different. In this image, both channels are doing one (half) sine wave, twice per switching period. They should be LOW for half a period, as the drain voltages do in the previous image. Better quality images: 2 gates 2 drain voltages 2 differential input lines schematic Datasheets: OpAmp: http://cds.linear.com/docs/en/datasheet/1497f.pdf MOSFETS: http://www.vishay.com/docs/91262/91262.pdf Coils and capacitors: Line inductor value: I'm not sure if this value is correct. Center-tapped main coil inductance: This value should be pretty correct, I calculated it by measuring it's size and windings, and the operating frequency is also nearly the same as the calculated one. tank capacitance: 6 times a 1µf MKP capacitor Questions: - Why these strange large spikes? - Why is the waveform suddenly different when reading it near the differential inputs? For the first time ever, I can provide you with scope images! I finally bought a (quite cheap) oscilloscope. I hope it helps a lot. Oh, and one more thing: The induction heater does actually work already. I'm getting huge currents in the LC tank, since the 6mm copper tubing gets hot after a minute. Water cooling has been added, and it works like a charm! The MOSFETS do get quite hot after 15 seconds of heating an object, or after 40 seconds of heating nothing. This, probably because the gate voltage isn't what it should be. Kind regards, Electorials

Asked by DELETED_Electorials 3 years ago


Every thing is okay except line follow command ,,,when i say line follow it only goes forward but does not follow line my code is String voice; int LS=10; int RS=9; int LED=13; char getstr; int in1=3; int in2=4; int in3=5; int in4=6; int ENA=2; int ENB=7; long duration, distance; int trigPin=A0; int echoPin=A1; int buzzer=8; void forward() {   digitalWrite(ENA,HIGH);   digitalWrite(ENB,HIGH);   digitalWrite(in1,HIGH);   digitalWrite(in2,LOW);   digitalWrite(in3,LOW);   digitalWrite(in4,HIGH);   } void back() {   digitalWrite(ENA,HIGH);   digitalWrite(ENB,HIGH);   digitalWrite(in1,LOW);   digitalWrite(in2,HIGH);   digitalWrite(in3,HIGH);   digitalWrite(in4,LOW);   } void left() {   digitalWrite(ENA,HIGH);   digitalWrite(ENB,HIGH);   digitalWrite(in1,LOW);   digitalWrite(in2,HIGH);   digitalWrite(in3,LOW);   digitalWrite(in4,HIGH);   } void right() {   digitalWrite(ENA,HIGH);   digitalWrite(ENB,HIGH);   digitalWrite(in1,HIGH);   digitalWrite(in2,LOW);   digitalWrite(in3,HIGH);   digitalWrite(in4,LOW);   } void stop() {   digitalWrite(ENA,LOW);   digitalWrite(ENB,LOW);   } void on() {   digitalWrite(LED,HIGH); } void off() {   digitalWrite(LED,LOW); } void line(){ if(digitalRead(LS) && digitalRead(RS))     // Stop   { stop();   }     if(!(digitalRead(LS)) && digitalRead(RS))     // right   { right();   }     if(digitalRead(LS) && !(digitalRead(RS)))     // Turn left   { left();   }     if(!(digitalRead(LS)) && !(digitalRead(RS)))     // Forward   {     forward();   } } void setup() {   pinMode(LED, OUTPUT);   Serial.begin(9600); pinMode(LS, INPUT);   pinMode(RS, INPUT);   pinMode(in1,OUTPUT);   pinMode(in2,OUTPUT); pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT);   pinMode(in3,OUTPUT);   pinMode(in4,OUTPUT);   pinMode(ENA,OUTPUT);   pinMode(ENB,OUTPUT); pinMode(buzzer, OUTPUT); } void loop() {   while (Serial.available()){ //Check if there is an available byte to read      delay(10); //Delay added to make thing stable     char c = Serial.read(); //Conduct a serial read     if (c == '#') {break;} //Exit the loop when the # is detected after the word     voice += c; //Shorthand for voice = voice + c   }   if (voice.length() > 0){     if(voice == "*go ahead"){       forward();       }     else if(voice == "*go back"){       back();       }     else if(voice == "*turn right") {       right();     }     else if(voice == "*turn left") {       left();     }     else if(voice == "*light on") {       on();     }     else if(voice == "*light off") {       off();     }         else if(voice == "*stop") {       stop();     } else if(voice == "*line follow") { line();           }       voice=""; //Reset the variable after initiating   } }

Posted by BibekP4 6 months ago

where can i buy a remote controlled stepper motor kit , that i can use to controll an esc?

Hi, i am building an rc tank, and have decided that i want to put an electronic speed controller on the tank to control the speeds of the two motors used for both steering and driving. however, i am having difficulties finding a stepper motor i can control via remote control, ANYWHERE!!. i need to get a stepper motor, so that i may control the esc, as the only esc i can get without paying more than $30, and will work at the current i am using, needs me to turn a knob to determine the speed, that knob, i will be turned by the stepper motor. now what i have in mind is that i have two kits foir controlling the stepper motor, both i will put onto my remote controller board, so they act like a gear stick on a car, these will control the speeds the motrs go at when i use the on /off signals from the remote control to the motors. what i am asking is where can i get a kit that will wirelessly control a stepper motor, using a band that isnt 27mhz, 40mhz, or 315mhz. but the thing is i dont want aan esc that can be directly controlled by a receiver, as i also plan on using that kit for something else,  as i may just decide to use it to pivot a wireless camrea that is mounted on the tank.

Asked by oldmanbeefjerky 7 years ago

Power outlet controlled by windows driver (not master/slave circuit)

HI, the idea is to control a power outlet when the OS is booting. And even more important, when the OS shuts down. the outlet should turn off before the PC goes in shutdown.A master/slave socket (which i have) only switches off when the PC goes into OFF modes which results in a big bang on my Active Speaker setup. (behringer B2031A with B2092A).So, in short. i need a circuit thats being controlled ON after a driver has been loaded during BOOT.and that cicuit needs to power down when the Driver is being offloaded during shutdown.AC being controlled by a solid state relayThank you for anyone who can helpbest regardsmarco

Posted by marcoNLD 13 days ago

Valve that shuts off once a set pressure is reached?

For something I am in the process of designing, I need a valve that can be connected to a high pressure source and will allow the gas from the high pressure side to to flow into a sealed container on the other side until a pre-set pressure is reached. It should then shut off. The system used to do this should also be able to handle a very high pressure spike (possibly even the type of compressed pressure wave generated during a super-sonic combustion / detonation) on the sealed container side. If you can provide a diagram or the name of a type of valve or even just a description of how this could be done it would be appreciated. No computer controlled stuff please. ##################### The answer I have discovered is to use a regular diaphragm-type pressure regulator. ######################

Asked by Jaycub 7 years ago

I have to design controller for controlling speed of BLDC motor for E RICKSHAW ?


Asked by DIGVIJAYSING 2 years ago

Rapid fire controller for ps3

Rapid fire controller for ps3 ps3 modded controller ps3 modded controllers sexy lingerie  

Posted by cainmack76 8 years ago

Small RC Car drive system help?

I have been looking online all day and i haven't found anything.  I am looking to turn a iPod touch case into a small rc car using a canabalized rc toy that I got from a friend.  I am using it for mainly its transmitter/receiver and motor controller.  All would be well and good but one gear in on of the gearboxes is shot.  I have many other hobby motors and two that are the same that I want to use instead but I don't know if I can without putting a gear box on them first or if I can, like I want, attach the axle right to the motor spindle with a jery rigged shaft collar.  Just for reference I DO know about building things like this I am on my schools robotics team which I founded but in vex not only are the hookups male instead of female the motors are like servos and they have built in gearboxes (they come as a module).  Any ideas or advice would be greatly appreciated and if I could get help asap I would love it. Thanks in advance.

Asked by ahleagle 5 years ago

remote control a webcam?

Trying to make my old Logitech wireless controller control my webcam. Like focus, up down, left right. Is this possible?

Asked by neon2392 6 years ago

remote control? Answered

How does the remote control of the robot work?

Asked by Christophev17 1 year ago

Help building a touchscreen controller to control 12vlt relays in a custom car.

I am new here and am looking for a little help on building a touchscreen controller that will control 12vlt relays that will open and close actuators and controll the air ride system. THank in advance.

Posted by onair4871 10 years ago

capacitor control

I was just wondering if anyone knows any methods of controlling the energy discharge from a capacitor..

Posted by nuncoop 10 years ago

Could anyone help me with creating a PWM controller? Answered

Hello, I would like to create a PWM controller that has three pot's: - Duty-cycle pot - A pot for adjusting the frequency - a pot for adjusting the output voltage. I'd also like to create this one just with transistors (so no timer IC's). I have some MOSFET's that I can use for switching on and off the load. The PWM controller should output an AC voltage, but if that is too hard to make, an alternating DC voltage is also good. The frequency range should go from 30-50Hz up to 4-6kHz. (I don't really know if this is going to be possible to adjust with just one POT, but I can also use a Trim pot for this). You don't need to explain every little detail. I have basic electronics knowledge. I just don't know where to start. This is what I have until now. It's not working very well because when I change the duty-cycle the frequency also changes. The frequency POT is also not good because the frequency decreases when I go to higher resistance, and when I'm going to the highest resistance, the frequency increases again :(

Asked by DELETED_Electorials 6 years ago