### Electronic Level

I need to level a 32' long machine. Lengthwise is easy, but along it's width is a pain. I have to check in about 8 places along the machine. This takes awhile to do with only one precision level. Since these levels are about \$120 each it is not realistic to buy eight. I need to save time and effort. I was thinking of trying to build a bunch of electronic levels to place in their designated areas so I can find the "level" of each area without moving a level to it. Any ideas?

Topic by Monger   |  last reply

### A Level choices

I'm not after anything in particular here just want some opinions. After recently applying to my local sixth form college I'm curious as to...well I just want to talk really. My options are: 1.Chemistry 2.Physics 3.Mathematics 4.DT: Product design - Materials Reserve:Computing GCSE: P= predicted grade, C = current grade (Or already gained GCSE), L/10 = how much I enjoy, G/10 = how capable I am. Maths: P= A*, C=V. high A, L8/10, G7/10 Physics: P=A*, C=A*, L9/10, G9/10 ICT: P=D(distinction), C=D, L7/10, G10/10 BPE: P=A*, C=A/A*, L6/10, G8/10 Chemistry: P=A*, C=A*, L9/10, G9/10 DT (Electronics):P=A*, C=A*, L9/10, G9/10 Catering: P=A*, C=A, L5/10, G8/10 Music: P=A/A* , C=B/A, L5/10, G7/10 Biology: P=A/A*, C=A/A*, L8/10, G7/10 English Lit.: P=A*, C=A, L6/10, G6/10 English Lang.: P=A/A*, C= B/A, L6/10, G6/10 PE: No GCSE Anyone else recently applied for sixth form? Currently at sixth form college or university? Any advice? I reckon I am going to end up (sounds so negative) in Engineering or Science, whether I choose University or an apprenticeship etc. ANY advice appreciated.

Topic by DELETED_zoltzerino

### boom blocks levels

This future instructable will show you how to make levels that I make or if you have made on I will collaborate the future instructable with you and you can post yours. if you don't want to be colaborated all you have to do is post a picture of your level ,tell me what map you used ,what story line you edited it from. and I will re create it and ad it to this instructable. please do not post a level unless it's some awesome machine ,or if it can actually be beaten. ideas for levels: try to get Gorrilda to the Gurts but lure her to explode bombs to blow them up. Try to make here take a detour so she doesn't. I made one just like that where it shoots a Gurt into space if you don't stop Gorrilda from detonating the bomb. more coming soon... maybe.

Topic by the_burrito_master   |  last reply

### Sound level meter?

Does anyone know how I can build a simple sound level meter with a light that will come on at a certain sound level?

Question by pennsteve   |  last reply

So, I am doing a science fair project about what  pH level is best for sea monkeys and what happens with the other levels.  Dies anyone know how to  adjust the pH levels easily in such a small amount of water??

Question by kyluddy   |  last reply

### Battery Level Indicator

Trying to build me a battery status or level indicator, using the LM339 series IC. I am just not that familiar with this IC. I want to make this using 3 red LED's, 3Yellow and 3 green or using a bar graph LED. Any advise on how to hook this LM339 up?Thanks

Topic by dominick.j.pezza   |  last reply

### CNC auto level

I bought a 3 axis CNC machine from amazon, after putting it together with poor instructions, I had what looks to be a auto level prob wire. I am trying to figure out how and where to connect this single wire to the board? the IC in a atmega328p with Arduino loaded . I have some photos that maybe someone could tell me which pin to connect this to? thanks

Topic by DominickP4   |  last reply

### Leveling a tree stump

Hi there everyone. So I have a bit of a dilemma. There's 3 or 4 beautiful knotted and dried tree stumps that I pass everyday and I've finally decided I want to drag them back home with me (which is another problem entirely) and use at least one to give my rain barrel some height. It's about a foot and a half in height, and just about thick enough to handle it. My problem is that the top is completely uneven and has been hacked with a chainsaw. I'd need to level the whole thing on top and bottom to make it useable. I just have no idea how I can go about doing this WITHOUT using a chainsaw. Thanks in advance everyone. I'll post photos soonish.

Topic by norwish   |  last reply

### !!! RAGE LEVEL OVERLOAD !!!!

Ok 1st - this is like the best contest instructabes has ever done.. 2nd - ...only...people...from...usa...can...friggin...win... 3rd - refer to topic title.... Anyone from UK want to storm America with bear cavalry?

Topic by =SMART=   |  last reply

### GCSE to A-Level transition

Hello all, I have recently moved up from GCSE level education to A-Level education and I am happy with my subject choices after one week of being back after a long holiday. I am taking: Chemistry Physics Mathematics Design and Technology: Product Design - Materials I am worried about my mathematical ability though. Despite getting an A grade at GCSE, my true ability (in general) is somewhere around a B. I excel in geometry, shape, mechanics - anything with REAL WORLD application. I do not fare so well in the 'Maths for the sake of Maths' bits, namely some algebraic sections and whatnot.  I am aware that the jump from GCSE to A-Level is a difficult one and that many students struggle with it (Maths in particular). I just thought that I would post this here to see if anybody who has been through a difficult 'step-up' in work difficulty could offer me some advice.  Also, this is a forum post so that anyone, in any education system, in any 'step-up' can discuss their issues, or offer their advice. So, don't feel left out Yanks! :-) I thank you all in advance.

Topic by DELETED_zoltzerino

### Ice Rink Leveling?

Looking for anyone's practical experience here. I have made backyard rink last 3-4 yr, now upgrade to Nice Rink liner. Holding water never a problem, many in Northeast last yr had limited time due to warm winter. My rink is triangle shape with legs 20x30. Slope on one side  goes from 1" to 7" or so, average ice thickness is 3-4". Part of rink over brick patio block. Use wood 2x6-2x10 borders. Was thinking of putting hay/straw under liner in the deep sections to reduce volume/depth so I can freeze solid and not have water layer under the ice. Or do you think the trapped air (under liner) will warm and work against this. I would think enough straw would not fully compress and help reduce water level, but then interface between liner and actual ground will have a lot of air space. Got a few months to think on this, my season is late Dec-mid Feb.

Question by ptsmitty   |  last reply

### Charge level indicator?

I need a nice, simple charge indicator. I have a battery pack that holds 4 AA NiMH batteries. Normally they charge up to 1.3V per cell or 4X1.3=5.2V total. I have a solar trickle charger on there too and I'd like to have a little charge indicator.   Requirements are: -low part count -under \$10 -small (it's on my bike helmet) I was thinking something with a pushbutton an LED or two and a zener diode. Something that turns on the LED at  greater than 5.2 volts. But I don't have experience with zener diodes. Has anyone seen a system like this around? Can you think one up? -Cheers

Question by snotty   |  last reply

### Does anyone know how to make a team fortress 2 level in sketchup, and be able to play it?

I have, and love, Team fortress 2, and i am really interested in creating levels for it. but whenever i open the Hammer editor, i am confronted with oodles of coding and confusingness. I am pretty good with google sketchup, and was wondering if anyone knows how to convert a sketchup file into a map for tf2?

Question by cyc4015   |  last reply

### =SMART= is full of high levels of Epic Win

=Smart= Recently won one of the Instructables competitons. He had alread won a t-shirt, and I had no t-shirt.We're both good friends, and spend many hours talking as part of the chatroom crew.He offered to send me the tshirt, which arrived today, complete with decorated envelope, and a custom etched tag. HE IS FULL OF EPIC WIN

Topic by gmjhowe   |  last reply

### USB Level Shifter help

I need help trying to replace a RS232 level shiftre with an USB plug. Any ideas?

Topic by Woody

### Regarding Featuring at various levels...

At the moment, a full feature for a project gets that project onto the front page as an "Editor's Pick", but all a feature at Category or Channel level earns an author is a small star on the project's thumbnail. What I think should happen is... I look at the front page, I see the most recent top-level featured projects (as now) I click on a Category, say, Food, I see all the top-level food projects, plus all the Category-level featured projects. I click on a Channel, say, Sandwiches, I see all the top-level, Category-level and the Channel-level sandwiches. That way, authors will be rewarded for their work with the increased traffic they deserve. The photo is irrelevant, I just don't like publishing topics with no image.  It's the Angel of the North, with Conker-X sitting on the toes.  I took it on the way home from the Newcastle Maker Faire.

Topic by Kiteman   |  last reply

### What is line level output? Answered

I saw it in Kaustic Machine's schematic for the Atari Punk Console. Does anybody know what it is?

### Wireless water level indicator?

I have a tank that's above my 2 story house. I did use a 50 foot Ethernet cable and wire up a level indicator, with 5 levels from empty to full. But the wires always corroded, and it just stopped working. What i'am looking for is a way, to do the same wirelessly. Maybe even automate via ifttt, as my motor is connected to a smart plug the HS100. How can i accomplish this, the tank is open to the elements, so something waterproof, and solar/battery operated would be great. I did think of the Xiaomi Water sensor, which generally checks for dampness,but that needs a Xiaomi gateway, so what does the community suggest?

Question by TalkingStuffN   |  last reply

### LM3914 battery level Indicator ?

Https://www.instructables.com/community/LM3914-Battery-Level-Montitor/     I am trying to make a Battery Level Indicator using the LM3914 IC. The problem I am facing is... where you see those 3 LED's my voltage increases on the pot, where as when the LED's are all the way on it decrease across the pot. I am using a 9V Battery where I want the red led to show depletion  of battery life around 5 or so volts  how can I achieve this. Can someone please help me with this?      Which pin can I set to 5v and how?

Question by dominick.j.pezza   |  last reply

### LM3914 Battery Level Monitor

I am trying to make a Battery Level Indicator using the LM3914 IC. The problem I am facing is... where you see those 3 LED's my voltage increases on the pot, where as when the LED's are all the way on it decrease across the pot. I am using a 9V Battery where I want the red led to show depletion  of battery life around 5 or so volts  how can I achieve this. Can someone please help me with this?

Topic by dominick.j.pezza   |  last reply

### voltage level monitor circuit ?

Hello, So for my application, i need to have a circuit that can monitor the input voltage until it reach 5V (usually from 0V ) then switch on and allow the 5V to flow into another circuit.  The problem is i have no idea where to start. Can anyone help me ?  Thank you very much

Topic by ChuongV1   |  last reply

### Simple crosshair laser level pointer

Is there something or someone here that can tell me how I can make a one or two laser pointer into a crosshair laser level? 90 degrees on all sides

### Bluetooth Water level for smart phones

I need some help in making a bluetooth water level that uses standard float switches.  Once a float switch is triggered it would close or open a circuit then the data of which circuits are opened or closed can be used to determined the level in the tank. This will be sent via bluetooth to a mobile device were i will develop an app to visualize the data. Please i need info on how to setup the electronic components.

### Bluetooth Water level for smart phones

I want to know how this would be accomplished PLEASE. Looking to make a bluetooth system that sends water level of a tank to a smart phone. I would think the most cost effective way to do this is by using a bluetooth module and float switches. The module would send three levels full, half and empty, so say all float switches are triggered it would be full, only one it would be half and if none it would be empty. What do i need to build this.

### How to make a water level indicator?

I want to make a water level indicator without sensors or ic. I want to make it with switches. I have a switch in which we have to press the switch to turn it on and if we leave it, then it turns off. So i can connect the switches with the leds and power it with a 9v battery. Please can you make the wiring diagram for this.

Question by ckkartik   |  last reply

### Simple battery charge level indicator? Answered

I need to be able to see the charge level of a 12v rechargeable battery and want it to be as simple as possible. Would this setup work: 3 zener diodes (at different breakdown voltages 10, 11 and 12 volts for example) with cathodes connected to positive so that when the battery was above their breakdown voltage an led could light up. Here is a diagram:

Question by Scytheon3   |  last reply

### Electronic water level gauge for well

I have a 32m deep, 95cm diameter well, that is covered with two heavy concrete covers. The water depth is about 20m down from the surface. I cannot easily access the well to sound the depth or visually check the water level. I would like to build an electronic water level gauge that will tell me the amount of water in the well. I can then regulate watering accordingly. It was suggested to me that I use a washing machine pressure transducer but I have no idea of the circuit required. A refined solution would send data to my PC !!!! I have 240v AC supply to the well pump. Any ideas? Steve

Topic by SteveG31530

### device to read volume level in a room

I was just thinking that something like this might be handy for a teacher. If you had some device that could read the volume level in the classroom and display it in a bar format so the students know when they are getting too loud. It'd be nice to be able to say, "ok, you can talk with your group but stay under volume 5" or "if you keep it below volume 3, you'll get more marbles". Anyone know if this could be done and how?

Topic by ecsaul23   |  last reply

Hello i have battery on helicopter and i need to read power of this battery to use it in pid gain ,i read voltage using voltage divider and calculate it and i sense current before motors and calculate power, but i dont think this is working, can you help me for that?

Question by britich   |  last reply

### Large Scale Water Level Indicator

Hey everyone, I hope im posting this in the right spot.  I run a large farming operation and get my water from a well that pumps into a large storage tank about 10 feet deep and 6ft diameter.   Because the well is very old I'm not able to add things like a float that will turn it on or off for me so I'm constantly having to check the well though out the day and if the cows are more thirsty one day they can drink the storage tank dry and that causes me problems with my pump, or if i leave it to long it will overflow and it makes a terrible mess. So im wondering if there is a way that I can wire up a water level indicator in the well-house and have a light board in my house that shows me the level of the well.  So for a 10 ft deep well id have an led light for every 1ft or so and when the water level gets to the top foot a buzzer would go off and when it hits the bottom foot or 2 ft then a buzzer would go off.  Ideally a wireless transmitting to the house would be best but I have no idea how that could work.  And wired would be hard with the well house being a few hundred feet away from my house.  I've done a lot of googling and haven't found anything that would suite a large scale water tank like this.  I purely want to be able to see in my house where the water level is and have it warn me when its too high or too low.  I apologize since i don't have a lot of experience in electronics.  Any help is greatly appreciated as i have no idea where to start or if its even possible.  Thanks guys!

Topic by rpfarm25   |  last reply

### Get battery charge level in Linux

I have a small all-in-one motherboard that runs Linux (http://www.pcengines.ch/alix3d3.htm). It only needs 18V to power up and the battery from my Black and Decker drill is 18V. I am able to get the board  to power on by holding some wires on the leads of the battery. My question is, can Linux detect how much charge is left through a DC jack? Or would that take some extra circuitry? My goal is for the user to see a percentage of battery life left (like on a laptop) and maybe to shut the board down if the charge gets too low. Any advice is appreciated.

Topic by bwallen   |  last reply

### water level sensor syphon control

I am trying to design an automatic watering system for a chick brooder at the ranch.  We are off-grid, so don't have electric.  The brooder is in a room in the barn beside a water tank.  I want to set up a siphon system to get water from the stock tank to fill the water tanks in the brooder--but need to have some way to turn on and off the water automatically.  I've seen the water sensors and no water sensors, and think those might be a start--use the no-water sensor to trigger the flow of water, and the water sensor to turn it off--but I'm not sure how to rig up a siphon that can be turned on and off, and not sure how to wire the whole thing together.  Any help greatly appreciated.

Topic by chl1234   |  last reply

### Help With Warcraft III World Editor

I have recently been creating a tower defense map with the warcraft world editor and I am just starting to make all the waves. My map is a Solo TD where the creeps move through multiple checkpoints. The problem I'm having is that if a creep manages to step into a region that he is supposed to later on (if someone mazes and makes it so they have to go through the last region before the first) then the creep dies. I was wondering if there is a way to make it so they HAVE to enter the first regions before the others apply to them. There is a way to do it with variables but that way is going to take me FOREVER. I was wondering if there is a faster way than just creating a load of variables so when a unit walks into a region it records it and after a certain number the next region is activated. That way also has a few flaws that would be difficult to maneuver around. Thanks in advance! The red words in the picture say "makes them go that way". It did't show up as well in JPEG form.

Question by noobererer   |  last reply

### How do I level out the garden?

Hello, could someone please tell me how I would go about levelling out my garden or particular blocks of it? Thank you in advance.

Topic by ShaunHill   |  last reply

### how do I level a ceiling fan?

OK, I've played with those @%!%^ weights till I'm dizzzy - how do I level this dumb fan??

Question by NanaMomsers   |  last reply

### How should the skimmer and water level be positioned? Answered

Question by mamaquiggs   |  last reply

### Using a plot leveling lazer to turn on a light? Answered

I have an uncle who want to make a light that will turn on when a senser come in parallel with a 360 degree plot level. to be attached to some heavy equipment to allow him to grade some property. any help? he was trying to avoid using a processer or computer, but whatever it takes to due it.

Question by red9er   |  last reply

### How to make a level walk on a sloped lawn? Answered

My property is on a slope.  I need to make a new walk and want it to be level when I walk on it,  plus I need to somehow make sure water will drain off the walk, so it doesn't freeze in winter.  Also I plan on using stepping stones.  Need some home experts information and advice.  thanks

Question by labsnme   |  last reply

### How do I level a concrete floor?

I removed a wall down the middle of my basement.  It had a concrete footing which came out with the curb when it was removed, but the concrete floor on one side of this area is one inch higher than one the other side.  How do I level this so I can install a floating laminate flooring?

Question by Shirley Harrison   |  last reply

### Wanted: non-electric water level valve

We have a small water-fountain that needs topping-off.I want a valve to allow a 1/4" soaker hose to dribble water until it reaches a set levelI've seen larger versions, but I want to make one that will fit inside a small fountain. I don't even know the hydraulic principle that can do this.Please advise

Question by richardhaven   |  last reply

### Lm3914 battery level indicator 1v - 40volts?

So I looked up peoples ideas off of here and google I set it up the exact same way I must be missing a step can someone please dummy proof this for me.

Question by dominick.j.pezza   |  last reply

### Auto bed levelling probe problems on marlin.

When i try to set the probe routine (g29) the servo dose not deploy the probe. Also if i try it with the probe down (m401) it will try to probe but the motors don't move so it ends up probing the same spot 3 times. (on the lcd it thinks the motors have moved but they haven't) 3- point probe mode Marlin 1.0.3 dev These problems are when i try on pronterface. My config file: http://forums.reprap.org/file.php?4,file=58699,filename=Configuration.h

Question by bonze77

### Converting to/from line level signal for guitar effects? Answered

So I've got some effects pedals that don't get along with my Egnater Tweaker's effects loop, namely the HBE Frost Bite Flanger, but my Carbon Copy doesn't do too well either.  I've determined the problem to be the effects loop (which is at line level), and the previously mentioned pedals won't accept line level signals without a significant volume drop and high-end attenuation. So my idea is to convert the line level signal being sent from the effects loop to instrument level, run it though my pedals, and then back up to line level and to the loop's return.  This would do the trick to get it down to the right level, but how do I get it back up to line level?  It's passive so I wouldn't think you could go from -10db to +4db, right? I'm also concerned about introducing noise and tone sucking.  Additionally, the send and return both have a different impedance, would I need to compensate for that? Any ideas on a way to achieve this, or a better method that hasn't occurred to me?  Any help is appreciated.

Question by RelaxedSoup   |  last reply

### How should I make a level, mosaic table?

I'm thinking about making a mosaic table from broken ceramic lamps. If I want to fill in the empty space to create a level surface, what should I use? And how long does it take to harden?

### AUTO HEADLIGHT LEVELING stepper motor based on arduino

Hello everyone, first sorry if I make some erreur in my writing post, I m a French people, so I would like know if it's possible to make a project arduino based with a accelerometer to use like an auto leveling adjustment for the road beam, actually on my car I was a standard halogen headlight with dc motor and a wire to control I change the headlight by a full xenon and now for the gestion of the leveling I need a third part to work in a autonome mode, I had searched for a while a module to control the  stepper motor based on the car inclination and I had found nothing who'll be use with an accelerometer to adapt to car acceleration or deceleration,  I guess I need an accelerometer, and a stepper motor controler 12v I would like know how hardest is to setting up? Thank you

Topic by gagaetan10

### I need a good material to level the bottom of a bottle.

I'm using old beer bottles to make lanterns. The main problem I encounter is that the bottom of the bottles are kind of domed. When I put the tealight candles in them, they want to slide to one side and sit at an angle. I thought about hot glue, but I was hoping for something less susceptible to heat and a little more classy. Any suggestions?

Question by NunchakuMan   |  last reply

### Take Thanksgiving to the Next Level! Project Contest Winners

I hope your Thanksgiving was as exciting and competitive as mine! Of the 42 people that came over for dinner, I beat them all by gaining an unprecedented 5 percentage points of body fat over the course of the dinner!Ok, maybe not that much, but I did eat until I was literally sick, and can feel comfortable saying, "I took Thanksgiving to the next level."From their projects, it's clear the winners of the Take Thanksgiving to the Next Level contest did too.Grand PrizeThese three projects will win beta Eye-fi Eye-Film cards. More information here.green chile fried turkey by drEelmodular pie-cosahedron by turkey tekPumpkin Cheesecake Pie by dently First Prize PackageThese three Instructables will win On Food and Cooking: The Science and Lore of the Kitchen by Harold McGee and a Tanita UM080 Scale with Body Fat and Body Water Monitor.Cloth Napkins by HeresyOfTruthTurkey Treats by FrenchCrawlerXtreme Buddha's Non Vegan Delight in a Skin Tube by MrMunki Second PrizeThese projects will win one year magazine subscriptions to their choice of Make (digital or print version), Craft (digital or print version), or ReadyMade.\$7 Non-Stick Rolling Pin by jess'Antique' Holiday Molasses Cookies by ianCranberry Relish by LasVegasDIY 41-inch uberHDTV (3 150 x 1 680) - 3 x 20" monitors in portrait by acfouHow to fry a turkey by rbhaysLeftover cranberry relish cake by lisareaPumpkin Pie Dessert Squares by GregDDCScratch Pumpkin Pie by Tool Using AnimalStatistical Analysis of Turkey Cooking by trebuchet03Thanksgiving Calculator by spacejockeysUSB-Powered Apple by randofoThanks to everyone to who entered and to the people who helped judge the contest: canida, honus, kinawera, leahculver, mever, noahw, numberandom, puffin_juice, and zieak.Original Thanksgiving contest instructions here.

Topic by ewilhelm   |  last reply

### I am trying to automate a hydroponics system with many sensors and realys. Has any one done this before?

Sensors: Air Temp Water Temp Humidity Air Flow Light Levels Water Depth Ph Levels Co2 Levels in the Air Co2 Levels in the water Oxygen Levels Air Oxygen Levels Water

Question by ckirchner001   |  last reply

### I need to be able to see the charge level of a 6v rechargeable battery and want it to be as simple as possible?

I need to be able to see the charge level of a 6v rechargeable battery and want it to be as simple as possible?

Question by HariK38   |  last reply

### is it hard to make a strobe light and the level of hardness on a scale of 10?

Question by kane1o1   |  last reply