Question by jhvh.one | last reply
I would like to get a DC motor to spin in one direction for a specific number of rotations and then spin in the opposite direction for the same amount of rotations and continue to do this automatically? I know that changing the direction of the motor is achieved by reversing the polarity from the power supply, but how can this be done without using a switch or potentiometer or any other piece of hardware? I am new to this stuff so any help is much appreciated. Thanks
Question by luch | last reply
I already have a refill ink available. I just need to know how to put the ink inside the pen. Thanks
Just wondering, I was looking at some of the "featured" Instructables and some of them are brand new. What are the requirements that would qualify yours to become "featured"? Is it Views? Artistic merit? score? I'm curious! Thanks!
Question by poolgirlblue | last reply
Question by vtrucco | last reply
What we require for making a robot self sustained
Question by avi4u1988 | last reply
how do you make a card reader?..........skimming device?.........what parts would i need to get?.......pls help? Answered
Would love to learn how to build 1
How come a ufo creator on board reach to earht.are thair life too long to do it?
Question by tayyareci | last reply
The way yall descirbe this is good but it shoots to soft
I'm new to the audrino board but it looks to be a great piece of kit. I still don't fully understand the benefits of the motor shield. Is if just higher voltage motors, can you still add lights and input on an audrino board with the motor shield attached?
Question by funbob | last reply
Yeah i just think this would be kinda cool and iv been researchin but i can find anything all though i didnt look to hard any help would be apreciated the phone is so old that it has no speaker phone and id like to be able to use it hands free so any ideas the phone i have to work with is in the pic below
Question by Goomanhimer | last reply
I know that fps is speed unit, and I'm trying to calculate the initial speed(or the power) for my air canon. Information I have: 1: value of the air chamber 2: psi 3: diameter of the barrel 4: length of the barrel 5: diameter of the air release valve will those information be enough? How to calculate fps or power from information above?
I would like to wire an old cell phone to my car alam so that it will call my new cell when it is triggered i live in an aptmt building on th 18th floor so it it is inpossible th hear the siren .....if any one can help please let me know how
Question by alldemcarz | last reply
Yeah my ibook recenly stopd working it run off battery but wont charge and wont run off the ac charger iv been through 3 new chargers
Question by Goomanhimer | last reply
Can I use a flip phone?
My friend was given a computer that had had xp a clean reinstall and does not know what to do to get past the user page. Can anyone help? Thanks
I have a new 500Gb Hard Drive, and I'm going to install XP Pro on it. How should I partition my drive if I plan to have a lot of pictures, a lot of music, and games on it? Also, how big is XP Pro when it is fully installed? Thanks.
Question by Hoboman | last reply
I dont want a mile of cord that somebody could trip over....
Question by conrad2468 | last reply
Wasn't it in a highly populated area?? Doesn't everybody carry camera phones these days??
Question by Slidin_sidewayz | last reply
How do you build a lcd flashlight with variable brightness?
Looking into building a CNC maybe 15 x 20 inches working area, and need help:O Ive seen several instructables about it but still not sure which type of motors to use and why, where to buy the circuitboard OR how to program a DIY one, what are the 4th and 5th axes, and will it be expensive? Also are there any other hazards i should think about during the build? Any help would be greatly apprecited, thanks.
Question by brimckeon | last reply
Question by kaerez | last reply
I am plan to run 4 leds in a seires parallel configuration. The leds have a forward voltage of 5.2 and run at 350 ma. Would it draw more power if I had a higher input voltage or would it still draw the same amout. I am trying to decide between lithium ion batteries and NMh.
Question by jack.h | last reply
Cpuz says that my processor is running at 830MHz maximum in virtual pc My processor speed is 800HMz my host os is windows XPSP3 and the os in virtual PC is windows 2000 Neptune(go figure) edition Also my physical computer says that my cpu is running at about 790MHz
Question by ReCreate | last reply
Question by cemento | last reply
I am not sure how many people have seen these, but they are used in Elementary school alot. Basically, when the light is green the noise level is at the right level, if it is yellow it is getting a bit too loud and red is WAY too loud. I want to use this type of idea in my classroom. It doesn't have to be a traffic light but a series of light. I just don't know much about wiring.
Question by MrFish7 | last reply
I have windows 7 beta, anyone know how I can map keyboard key to my logitech mx1000 mouse buttons? The software doesn't
The setpoint software doesn't work
Question by kaimie | last reply
I have wireless at my house and my PSP can sense the signal, but for some odd reason I can't get it to connect!
Question by king_zilla | last reply
I'm building an edge lit card like the one in the link, but in a frame. http://www.evilmadscientist.com/article.php/edgelitcards I have an LED that came with one of those LED "candles" but it's powered by a 3V watch battery. I want to use the LED and noise circuit, which makes the LED flicker, from the candle and attach it to a solar panel I got from an LED garden light and 2 AA batteries. Can I just hook it up to the LED or do I need a resistor? Shoud I hook it up in series or parallel? How should I hook up the solar panel to charge the batteries? It's similar to a sun jar principal. Thanks.
Question by bastion72 | last reply
can pressure monitoring valves stems in a 2003 Cadillac Seville be replaced with standard valve stems?
Have ongoing problem of pressure stems leaking. have replaced two and they are expensive.
Can we use Electromagnetic waves to produce current. Like a cellphone starts charging when it recieves a call?
Its just an idea that struck me when i my cell phone's battery was dead due to a power cut. Can it be made possible. KINDLY DON"T PASS FUNNY REMARKS.
Question by Karan1 | last reply
I need instructions to change the brakes in a 95 esscort
Question by DELETED_spoonty | last reply