While visiting Lisbon, Portugal for OFFF 2009, I saw this bike ramp on a flight of stairs. I often carry my bike up and down stairs to train and subway stations, and would love to see more of these ramps around town.
Topic by ewilhelm | last reply
HI. I have already lost an Arduino. So I want to remove the D1 diode in my RAMPS 1.4 to protect the Arduino Mega from over voltage.Can I run the printer powering the arduino from my laptop's usb? Also do I need to change anything in the firmware for this? I am using the sprinter firmware.
Question by SowmenD | last reply
I am disabled and have an electric wheelchair and I need a ramp to get in and out of the back of my truck. I can walk very short distances and then I need the chair. I just got the chair donated but I fisacaly cannot build one myself so any help?
Question by madrasi | last reply
Hello there. First I apologize for my bad english. I have a 3D printer. But Arduino did smoke 2 times. I tried the engines. But the last time I tried to test the extruder engine, there was smoke. Arduino's voltage regulator burned. I did some research. I had to remove the D1 diode. I could not find it because I did not have much information.
Question by MikailB | last reply
I recently had a disability ramp built for the entrance to my home. It is made of pressure treated lumber and deck boards. I am putting down rolled roofing to help with slipping. I would like to make it so that it could keep it warm to prevent snow and ice build up. I was thinking of doing a solar water heater to feed piping underneath the ramp, but not sure if this is the best way to go. I also considered purchasing some sort of heat tape to go under the rolled roofing. What does the community think?
Question by tcoyle1 | last reply
A handicap ramp i am a poor lady trying to help another poor lady out trying to find wood to build a ramp 2 by 4 's and 2 by 6's is what i am looking for if you can help me out plz e-mail me
Question by loving | last reply
Hi I'm doing some experiments with an fm transmitter. Now, instead of transmitting and modulating audio, I wanna try to feed the base of transistor using a ramp generated by a NE555. I ended up with this schematic http://s30.postimg.org/pbe0oyu4x/base_sawtooth_modulation.png , would be ok to pass the signal on the base using a 220 ohm resistor and a 10nF capacitor? I suspect that I have to increase the value of the resistor R5. kind regards.
Question by akopelumenuscu | last reply
Should I make an instructable for a nice DIY bike ,skateboard, roller blades, ect. ramp and a simple sturdy skate board or roller blade grind rail? 1-3 are of the ramp obviously that i made quite recently.4 is of the grind rail its like a year and a half old so its really beat up it was a lot better new ,and i figured out a better way to build it.here is the ible so far tell me what ya think https://www.instructables.com/id/EHRS1JAFGB0X664/
Topic by the_burrito_master | last reply
The video below was awarded Best Illusion of the Year at this year's Vision Sciences Society meeting. I originally saw this posted in Nature News: In a packed concert hall, Kokichi Sugihara wields a pickaxe and mimes a blow to the stage. "I am a miner, and I have a secret," Sugihara says, adjusting his hard hat and headlamp. "I have discovered a new super-magnet." A screen behind Sugihara begins playing a video. A cardboard structure appears, consisting of four ramps ascending to a raised platform. A hand places a wooden ball at the base of a ramp, and it rolls uphill, before stopping on the 'super-magnetized' platform. As the same trick is repeated for the other three ramps, the crowd lets out an "ooh". Thanks to Kiteman, here's the author's own Web site: http://home.mims.meiji.ac.jp/~sugihara/hobby/hobbye.html Image and video from Koichi Sugihara, Meiji University.
Topic by kelseymh | last reply
Hello guys. I need to ask you on how to connect my ramps 1.4 &arduino mega to my laptop, because in the first time I fried my arduino and my ramps 1.4. can I plug the power to my arduino from my laptop and my ramps to the power supply simultaneously?
Question by joee1 | last reply
ISSUE: Stepper motors are not working when connected with RAMPS 1.4.OBSERVATION: The LED lights(LED 2,3,4) in the RAMPS 1.4 and Stepper motor are not powering up.PRATICES: I use Arduino mega 2560 and installed marlin firmware in it. And I bought a RAMPS 1.4 in a local electronic dealer. I placed the RAMPS over Arduino mega 2560. For testing I just connected 2 NEMA 17 stepper motors with RAMPS. When USB port connection is given from laptop to arudino board, a LED light is ON in Arduino board(L) and in RAMPS(LED 1). I use SMPS 12V 20A as a PSU for RAMPS. But in RAMPS the LED 2,3,4 is not switched ON. I checked the input voltage to the RAMPS using micrometer and it shows 11.75V. But there is no output from the RAMPS.Also I installed and tried Repetier firmware and grbl but it doesn't work.When I flashed Arduino with grbl, in this case all the LED lights in arduino and RAMPS 1.4 is switch ON. I use Candle GRBL software to test the stepper motors.And I replaced and tested with another RAMPS which is bought from Amazon but the problem remains unchanged.Hereby I attached images of circuit connections. https://i.imgur.com/mM3BIEn.jpg https://i.imgur.com/OPPuElQ.jpg https://i.imgur.com/mM3BIEn.jpg kindly give some suggestions at the earliest.Thanks and regardsBaalaji V
Question by Baalaji V
I'm building a folding ramp to replace my tailgate on my truck. It's going to be used to load/unload a ztr lawn mower. (It's been built primarily from discarded bed frames, with the addition of some expanded steel grating.) Because these mowers are back heavy, and low to the ground, a longer ramp is needed than you need to load a conventional mower. My solution is a spring loaded 8' ramp that is comprised of two 4' sections that fold down and out. It functions, it fits, the mower goes up and down it ok. The problem is that it is so heavy, that after it comes down about 2/3 of the travel, it is very difficult to control. When it comes down hard, it puts tremendous stress on the center - where the two sections of ramp meet. It can be hard enough to break it. I know my welding isn't the best, but that's really not the issue here. This is a design problem. I'm going to post a few pictures, to better illustrate my situation, and to show some of the things I've tried to soften the blow. The picture of the partially folded ramp was taken at the point where it begins to get difficult to lower without losing control. So, to clarify, I need a way to lower and raise the ramp with more control, and or soften the blow towards the middle. The springs I'm using are 140lb garage door extension springs, the largest springs available at any big box home center. I need to get this finished yesterday, so I'm going to try some things while I'm waiting for a response, like move the springs back further in the bed to put more tension on the whole thing. I'll also post this to the welding web forum, but I started here because I've got a lot of faith in the ingenuity of the instructables community. If we get the bugs out of this thing and anyone wants it in instructable form, I'll do my best. Thanks for reading the War and Peace of ramp questions. -Amir
Question by Amir | last reply
Let us assume a system requires 230V ac, 6 amp. When we switch it on, the voltage and current instantly shoots up from zero to 230V,6amp. I want the system to receive the voltage,current slowly ,i.e, when it is switched on, the voltage,current should increase from zero in a ramp manner ,and when it reaches 230V,6amp, it should remain there till the system is switched off.
Question by iamnimisha | last reply
Right now, I`m planning to use an arduino duemilanove, and 3 EasyDriver Stepper Motor Drivers. RAMPS board: http://ultimachine.com/ramps EasyDriver Board: http://www.sparkfun.com/products/10267
Question by Stuffses | last reply
Question by neud22 | last reply
I was using an arduino mega and ramps 1.4 motor controller for my 3d printer.During the time of testing ,i switched the power polarities in the ramps 1.4 , then I put 12V in the arduino then the mega chip got hot. This is the state now,when i plug the mega on to my computer : 1)The red ON led lights up and the L lights up. 2)device not detected. 3)Reset button does not make any change. 4)RX-TX lighting up. when i plug the 12 in the ramps: 1) the red ON led lights up, the green doesn't I want to know if this arduino and the ramps 1.4 can ever be used again. please help!! thanks in advance!!
Question by joee1 | last reply
I'm trying to make a light display for the inside of my car. right now, we're testing with a single led. we bought some transistors, and are hooking them up to a stereo to see if we can get a good visualization going. but it just has kind of a little dim flicker going on. how can I make it so that it represents the music better?
Question by codongolev | last reply
Stepper is nema 17 4.5kg torque and the current rating is 1.3 A , please give me the link for the stepper driver ...... :) Thanks in Advance
Question by _Boltz_ | last reply
What kind of tech deck fingerboard ramp or box can i make with: 4 10" long and 2" wide peices of wood 1 1/2 paint sticks
Question by rigidmaster | last reply
Basically, we must use an elastic band and there is no catapult allowed. The ramp is very steep and we can't use batteries or anything. We were thinking something to do with weights. Please help! We tried knex, but it ended up being too light. And it needs to go against gravity!
Question | last reply
Hey guys I am almost ready with my CNC which I was building during my summer vacations. Well I have nema 17motors ,ramps1.4 and polulu motor controller. Well I can't get the firmware that is to be uploaded onto the arduino to work properly. I tried repatier/marlin firmware,but have no clue what to tweak and what not.
Question by chrissunny94 | last reply
I am working on my 3D printer and I am using the Arduino Mega 2560 with the Ramps 1.4 board. when I power the ramps board the Arduino will not power up and operate. I have tried moving the header pin across VCC and the other connecter but there is not effect. I have to power the Arduino separately Via USB. is there something I am hooking up wrong or is there damage that I have to fix on the board itself.
Question by Dietrick K. | last reply
The car has to roll down a ramp at least a couple times the ramp is 8 ft long and angled at 20 degrees. the airplane has to be good and has to travel at least a couple meters
Question by name0 | last reply
Hey guys I was using ramps 1.4 for a CNC project of mine.When I was trying to upload a code for repatier when the ramps 1.4 was already connected to a 12v source, this forced my laptop to shutdown as well as forcing the mega to get heated up bad. Now I think the laptop ram is fried cause the display is not working and mega (even though the lights are blinking),the code cannot be uploaded
Question by chrissunny94 | last reply
I need a circuit that can convert sine waves to square waves that works with a wide range of frequencies and doesn't change the frequency, for a project i am working on. I also need a circuit that can convert square waves to ramp waves that also works with a wide range of frequencies and doesn't change the frequency. Thank you in advance.
Question by Super_Nerd | last reply
Instead of using a timer to turn the light on and off I would love to simulate dawn and dusk by having the light slowly ramp up to full power and then slowly ramp down to off at the end of the cycle.I do have some limited electronics experience but over the years have done less and less so I'm not as sharp as I used to be.If anyone has some ideas how I can do this I would love to hear them.Thanks to all.
Question by gjm | last reply
Sorry i couldnt decide how to word my question but here is my situation and i would be gratefull for any input because i am not sure what would be the best or easiest way to go about it. My car is lowered and therefore i can not park in my driveway without having a ramp(plank of wood) infront of each tire at the sloped base of my driveway. This does not bug me as much as the fact that every time i go to back out of or pull up to my driveway i have to align my tires as best as i can guess up to the ramps, take car out of gear, put on parking brake, get out, check one tire, then the other, and occasionaly move the ramps left or right before i can get back in my car and procede up into the driveway. Ok so its not only my laziness that fuels this project... my mustang isnt the quiestest and when its late I feel bad leaving it idleing (making noise) while i get out to make sure i'm lined up to the ramps. I would love to make some kind of proximity sensor or something that lets me know when each tire is propperly lined up. I have thought about a few different things like a camera under the front bumper that feeds to a monitor on the dash, (similar to a backup cam) also i was trying to think of a way to use an old cell phone and its camera for this. IR proximity sensors in the bumper attached to LED lights on the dash that tell me im lined up if the propper LED's are lit. I dont know much about them but maybe some sort of magnetic sensor or metal detector. One issue is that the placement of the ramps can be detected in different ways depending on the sensors used. whatever the factor is, that is being sensed (reflective surface, metal, tiny magnets) needs to be durable and able to be ran over on a daily basis. Also I want something that can be fairly accurate, although an err either left or right of an inch would be alright. Sorry for being longwinded but i look forward to some ideas! Thanks!
Question by colie1904 | last reply
So we are designing a 3D bioprinter using an Arduino Mega2560 along with a RAMPS board to power our motors and LCD screen. We are using open source software for the RepRap printer Marlin (http://reprap.org/wiki/Marlin). Our RAMPS board is powered by an external power supply unit. When we have only our motors plugged in, we have some control over them, but when we plug the LCD screen in, the voltage regulator starts to smoke.
Question by hsteven7 | last reply
So, I am trying to build a wolfstrap 3d printer, and I am having a lot of problems with the electronics. I have a RAMPS 1.4 and 5 stepper motors. -RAMPS 1.4 Test Code -Y and Z motors work fine. -There is no power to E0 and X motors. -E1 motor locks up -Marlin Firmware + Pronterface -I can connect, but none of the motors move when I print or do manual control. -Sprinter Firmware + Pronterface -I can connect, but motors just vibrate when moved Thank you for all of your help.
Question by pianoman99a
Is there a specific waveform (for example sine, square, sawtooth, ramp, etc) that the driver electronics (an oscillator i think?) in a solid state tesla coil in order to properly drive the coil?
Question by UbuntuNinja | last reply
Theres a moron on craigslist R&R that keeps harassing me & outher people. or if i find it will i get in trouble from craigslist???
Question by bigmark
How can I turn my Loft Bed wooden ladder into a climbing ramp for my small 19 pound dog to climb up into the loft bed? I have a nice wooden ladder to the loft bed, but the wooden rungs are about 10" apart -too far for my small dog to climb up that 45 degree angle Any ideas? OR ideas for a long enough dog ramp/stairs (I do not see any long enough for sale anywhere that would reach a loft bed ---and not be too steep.) The longest ones I have seen available seem to reach from the ground to the tailgate or the back of a truck or the like. I thought of adding a layer of carpeting to the loft bed ladder, with possibly some kind of strips for my small, agile 19 pound Mini Eskimo mix dog. She is usually cautiously timid of unstable situations or obstacles in her way, although she jumps easily from the floor to regular height bed. Also, I guess i will need to be able to lift up or off whatever dog climbing material I put on it, so that I can convert it back to something I can climb up into the loft bed too! Unless I build something (maybe from sturdy shipping boxes covered in carpet (I have plenty of carpeting that I could cover a series of large rectangular somehow strung together and that would be flexible (kind of like a roll-out fire-escape ladder is flexible) the rectangular boxes when sealed are quite strong and light weight, and that would be light weight enough to flip up or down, but I need help on the engineering part of designing and constructing something from boxes or long pieces of carpeting or or from the human wooden loft ladder to make it more dog-friendly. Any ideas, or am I just an unrealistic dreamer?
Question by JudySue | last reply
LEGO and Star Wars fans, get ready to have your mind blown! Flickr member Marshal Banana has created a scale replica of the iconic Sandcrawler, as seen in A New Hope. There are LED's inside and out, faux weathered exterior, an operable ramp that drops down and even a crane that can lift cargo and place it on a conveyor belt inside. And yes, it moves. The entire project took 9 months to plan and build. Here's some quick facts about the project, taken from his YouTube video page: Dimensions: 96 cm long, 100.5 cm long (lowered main ramp) Weight: ~20 kg Part count: over 10,000 Power functions: 4 xl motors, 5 m motors, 4 receivers, 4 battery packs, 22 Lego LED-lights Powered radio-controlled Functions: driving: forward reverse steering main ramp: up and down crane: up and down, in and out conveyer band: forward and reverse You can check out his Marshal Banana's Flickr page and see some amazing pictures of the inside of the Sandcrawler, as well as some of his other work.
Topic by mikeasaurus | last reply
I have a Super 9 bolt action sniper rifle. Problem is, the guns that I use now have higher FPS then the sniper rifle, which means that a pistol would shoot farther then it. I would love to know of a way to ramp up the FPS in the sniper so that it won't be out gunned by a pistol.
Topic by Spl1nt3rC3ll | last reply
Clock idea = out!any other idea for a higher torque clock-like motorhere's a very very brief photo of my idea. The light gray is the rotatingfood area and would be push by the dark gray (white out!) motor. the yellowthing is a hatch. It was just for me to write my thoughts down and I know the hand will run into the wall and everything. The sloped rectangleis a ramp on the inside so the food turbine will move spilling down theramp into the bowl. Also the big hand is actually the hour hand, I drewa small minute hand to show it was a clock, This has it worked so it willfeed every 12 hours and needs to be refilled every day.I don't really need any critique just answers for now '"
Topic by Chicken2209 | last reply
Hi Guy's I am new at this game and in plane words "I have no clue what I'm doing wring" I bought a Da Vinci 2.0 Duo and after a few weeks the problems started. After searching the internet on solutions I discovered that I can rip out the original board of the printer and replace it with Arduino mega 2560 ramps 1.4. I did that and got some info on what the sketch should look like on Youtube but I am struggling to get the printer fully functioned. This project is a little more than what I thought it would be. I tested the boards but they seem ok, again, Youtube help here but now I am at a loss. I mannaged to get the stepper motors to work but I am struggling with the famouse endstops and how to home the axis's. If you think I am way less than a beginner you are right. These things make my head spin. Is there any one that can share his marlin sketch configuration, that is working, with me. I am tired of this now and just want the printer to work. Any help will be much appreciated Many thanks
Topic by Lou0077 | last reply
I made this true bolt action that works like the real one . instead of using gravity to put the bullet in the chamber , mine uses a ramp . Another thing new about this is the magazine is easy to remove , just press the button behind the magazine , just like the AKs , and remove the magazine .
Topic by Katarukito | last reply
What is the most efficient way to transfer lateral movement to vertical movement via a ramp. The following curve is equal on both sides of the apex, if that is the correct term. Is this the best way to transfer the movement to strait vertical or should something else such as a long start to the incline and then a sudden shoot up.
Question by jj.inc | last reply
My son is 11 years old and has been given a school project to create a completely edible model car that will actually roll down a ramp. It needs axels and wheels, and we are stuck, particularly about how to make an edible axel. Any ideas?
Question | last reply