NeilRG

The original Magic 8 Ball was internally just a small glass jar with a polyhedron floating around in inky black liquid. I took mine apart decades ago.This is really cool!Very nice post.

Really great instructible! I thought it might be worthwhile to add a pair of tensioning bolts to make setting chain tension easier. Fine results!! Thank you.

Regenerative braking using the drive motor would be whats needed. Your idea would present an additional load to pedaling. Regen braking is not trivial since batteries cannot accept charge at the same rate that the motor can deliver it.

Very nice presentation of a fun project. I appreciate the insight provided by sharing your thought processes.

This is a very poor design, poorly executed and without reasonable analysis of cause and effect, with far too many tradeoffs as far as robustness of the system, compromises to the basic bike and safety.

The Mad Max films would be much LONGER on truck tired unicycles.

Beautifully rendered project.

Really wonderful instructable. I purchased one of these while on vacation in Greece. They are challenging to solve. Thank you for the 3d printed version as well.

Very imaginative! I appreciate the effort that went into this.

Your instructable was well done. I was impressed with the results you got painting plastic.You are making indelible memories for your little one. Best wishes going forward.

If you came by this design idea on your own , congratulations! Check out the wikipedia link below, Rodney Brooks has written extensively on this robotic concept. Nice post.https://en.m.wikipedia.org/wiki/Subsumption_archit...

I completely agree with your comment about sharing the sucesses and challenges that Gosse presents . I have no experience with EL wire but really like this project.

This instructable is noteworthy for your attention to detail, the quality of the end result and your sharing of the successes and failures. Wonderful job.Thank you.Neil

the dimensions are given.

The project is very well presented. As a person who is still learning to fly drones, i started with small ready to fly "toy caliber" aircraft and as my skills increase I will move up. This is a rather powerful drone and should not be flown by anyone without adeqate training and experience.

The road would be longer and the learning curve steeper for those who only see jargon, but the challenge can be met by individually googling the the terms that are capitalized and asking questions as they arise. Some of the "jargon" are technical terms that belie a deeper level of understanding that the author has that would be beyond the scope of a single instructable.If someone were to have a need for this project or want to duplicate it, it is not unreasonable to ask them to invest in their own learning.Having been an engineer my entire professional life, I can attest to the value of a needs driven learning approach. ie you acquire knowledge in pursuit of a particular goal. It tends to stick with you better than if you tried to read a textbook from cover to cover.In closin...

The road would be longer and the learning curve steeper for those who only see jargon, but the challenge can be met by individually googling the the terms that are capitalized and asking questions as they arise. Some of the "jargon" are technical terms that belie a deeper level of understanding that the author has that would be beyond the scope of a single instructable.If someone were to have a need for this project or want to duplicate it, it is not unreasonable to ask them to invest in their own learning.Having been an engineer my entire professional life, I can attest to the value of a needs driven learning approach. ie you acquire knowledge in pursuit of a particular goal. It tends to stick with you better than if you tried to read a textbook from cover to cover.In closing, I would like to mention that this project is in many ways an aggregation of skills and technology available on instructables across a wide variety of projects.Best,Neil

Google the work of Rodney Brooks. He has written extensively and intriguingly on subsumption architecture in robotics in which light seeking (photophilic) and light avoiding photophobic behaviors can be modeled using NO microcontroller and only a few photocells and transistors. Your project would benefit from using a left and right photocell to controll the base drive to transistors which would vary their conductance in response to or lack of available light.Good post.Neil

Interesting Crock Pot recipe ! You might consider applying some "spokes" of fiberglass strapping tape to the glass lid just in case, not to help with the seal but in case the lid fractures.

there are articles on line for lost pla casting. Pla referrs to the type of plastic used. There is no printable foam but there is control through software of wall thickness and infill of the plastic part which will insure burnout of the plastic .Good luck. Stay safe.

Your spell checker "told the truth". You were referring to 3D printing as ADDITIVE manufacturing somehow it substituted ADDICTIVE manufacturing . Having been at this for several years i can attest to it being addictive.Very good post.Thank you,Neil

Dont sell yourself short! Most people could not design a working machine out of cardboard. I have the advantage of being a licensed Autodesk inventor user and thats all i really know personally. Make your base plate from wood, since it is too large for most printers. Then all you need to design is a single "L" shaped bracket with a short leg that has two holes for mounting and a large hole with a rim to accurately locate your bearing . Print four copies of that and you would be ready to go. The H shaped frames in the cardboard version would not be necessary because the plastic would be more rigid.The L bracket idea should be within reach of your developing abilities, in short order :)Good luck.

This is a very useful idea. As you mentioned there are many packaging options. My thoughts run toward printing a two part enclosure that matches the profile of the power strip and could be mounted under it.Nice job.

Your work is beautiful. The math portion was interesting. Heres a potential solution for those with a more limited miter saw based on complementary / supplementary angles.If one were to cut a 45 degree angle into a piece of stock and then attach a piece at right angles so the right angle was clamped against the fence and the 45 degree part is against the table, the workpiece would be referenced to the 45 degree cut, then the miter saw would need to hit 24 degrees to make a 69 degree miter cut. Making such a jig would need to incorporate work holding and is beyond the focus of this instructable. You would need to include the necessary safety features so you dont hold the workpiece by hand while making the cut.I hope this helps.Neil

This is a thing of creative cleverness and craftsmanship.I have a full machine shop and welding capability at home ,and am inspired by you. The issue is that Im 6 ft @208 lbs and my wife is 5ft 2 in and about 70lbs less. The areas where we ride might be tough with a bike this wide.Great instructable !

Remember its wingardium levioSA, emPHASIS on the second syLLABle. Per Hermione Granger and Mike Myers. OK I'll stop now . Thanks for the post.

A project that is fun to build AND connects with a young child is a wonderful idea. Very nice post.

This is a great answer. I appreciate the evolutionary path and goals you have set for yourself.

I drew inspiration from this. I have a 10 HP three phase converter that runs my 3 major machine tools. I will modify the design you presented to sequence a start relay which is needed to engage the starting capacitors in the phase converter which then should be bypassed once the phase converter is up to speed and before the major machinery is turned on.The solid state relay idea is fine but you could have remedied the spike with a back emf suppression diode across the relay, an optoisolator to drive the coil and if need be a snubbing cap across the contacts. I know this sounds much more complex than the solution you went with and I am not criticizing you, but solid state relays are expensive in the ratings I require , plus I already have the contactor.

This is the OTHER meaning of CAD. Cardboard Aided Design! The question I have is since you have a 3d Printer, Why not just print the parts?The one bad idea you mentioned is using a potentiometer to control motor speed, unless of course you were going to use a PWM scheme to control your motor. A simple pot circuit would waste power as heat.Good post. Thank you.

I agree, this is wonderful! I've followed your other projects and appreciate the ingenuity you possess .

As Ed Norton said to "Chef of the Future" Ralph Cramden, "Can it core a apple?"Nice build.

You would get better soldering results and expose your capacitors to less heat if you cleaned the oxide off your parts before you solder them.

This is noteworthy in my view because of the craftsmanship you demonstrated in this instructable and the justifiable pride you have in the end result. No hot glue duct tape or tie wraps that seem so prevalent in some areas.

What?!? No air motor?Wonderful job, again.

I admire your positive attitude, intellect, and dry sense of humor.

This shows the OTHER meaning of "CAD".Cardboard Aided DesignNice project.

This is pretty clever. McGyver would be proud. Using heavier wire and filing a point to size required would give more thermal mass and made the soldering process easier.

Please make clear distinction between "welding" which involves melting the underlying metals being joined at thousands of degrees and soldering which a low temperature process at about 650 deg fahrenheit does not melt the metals being joined only the solder. There is no welding in this project.

i have two of these. Nice post

i am a long time fan of K& J magnetics and a customer. The magnet stuck to the negative end of the battery is obviously going to stick quite well, but the positive end could possibly come out of position and increase friction due to the much smaller size of the positive terminal.Why not put a small steel washer big enough to fit over the positive end that is smaller than the battery's outer diameter and stick the magnet to that, to provide a more stable base and more mass for the magnet to stick to?I hasten to add that i have not built this as yet, so this is just appoint of of conjecture on my part.

Nice rainy day project for kids. A section of a wide rubber band glued to the rear wheels might aid traction.

Papier mache! Wow! This is an artistic "labour" of love for sure! Beautiful results.

I appreciate this project because of the presentation, which details not only what worked, but possible problems, actual problems and solutions as well as ways to refine and improve your design. This mindset will serve you well as you progress in your career.

I guess the responsibility for emissions control rested with Wilma! It was based on Freds diet. I wonder if he was lactose intolerant?

just what we dont need is some noob trying to scale this up and trying it with a lipo battery or other larger battery to their ultimate detriment. Instructables should pull this post. I have commented many times and have always respected the be nice policy but this non invention is moronic.

Yes i know i was just speaking to a method to isolate a variac. My post was a bit tangential.

Any project that benefits a pet is really nice to see, especially dogs!!

The supplied schematic is excellent as is the source listing for the parts. This is a very complete instructable. My interest in inductive heating stems from a desire to solve a technical problem where in a 1/2 inch stainless steel rod is "locked" in place by galvanic corrosion to an aluminum tube. The area has limited access so I will need to fabricate a flexible link to the coil to get the coil around the desired assembly. I do not imagine I will need anywhere near the power this unit is capable of for this application, since I am essentially trying to exploit the different rates of expansion between the Stainless rod and the aluminum tube, not melt anything!!The greater capabilities will be of use in my machine shop at home.Thank you,Neil

The design of the chuck you fabricated is simultaneously simple and very clever. I will be incorporating this into a coil winding machine that will be stepper motor driven with a separate stepper for the lead screw.Thank you for your post.

This instructable was a surprising source of nostalgic thoughts resurfacing. Many years ago when I was very young I had an extended hospital stay. I had been given a kaliedoscope that was a plaything that i really liked. This instructable is EXCELLENT not just for the quality of the presentation, but for the valuable links included.Thank you,Neil

Yeah I know how it goes. 2 decades ago i gave the son of my friend a breath powered siren. It did wonders for our friendship.

So a question that popped to mind:What percentage of your desire to build this is to amuse future grandkids?And what percentage of you desire to build this is to annoy the heck out of your son?I'm just sayin' :)Nicely rendered project!

This is a wonderful project as far as the wearable display is concerned. For remote multimeter i have several mooshimeters, which have the ability to link to an android or IOS device. The newest software allows the meter to talk to you.I mention this as an off the shelf albeit pricier way to remotely measure dangerous voltages from a safe a vantage point, and not in any way to diminish what you have achieved.First rate project! Thank you.

You have probably spent too much time watching Chuckie movies and the like . I did not find this creepy at all. On the contrary, I thought this project was "cute".The information contained here is useful, and i think this is a very cool project.BTW if you want creepy, animate the head and limbs. No one who remembers Mr. Ruxpin will expect that.

This project respects the solemnity of the event being comemorated and shows a good use of our G-d given mental assets . Nice project and video.

Anyone following this instructable should note that welding plated metal has the potential to release toxic fumes. The project could be improved by using some neoprene foam ie: an old mouse pad to line the inside reducing the likelyhood of damaging the table legs. If you choose to add the padding plan ahead and allow for the added thickness.

This is a fascinating project. I'm wondering if the voice coils from disk drives could work as the x y positioning elements. I have not studied them in enough detail to know if they have the needed resolution. What do you think.

Very impressive detail in the DeLorean!!

I would be astonished if this post gets anyone else who claims I made it. Awe inspiring.

This is truly an incredible project. I will start printing when i get home from work today. The availability of the electronics and modular open source nature of this are extremely appealing.

Beautiful work!! Excellent instructable. I especially appreciate your Hot Tips on welding properly. In step 10 you reference the importance of grounding so as not to ruin the bearings. As an electronic and mechanical engineer I appreciate the effort & thought that went into this project. Its not something I directly have a need for so I am writing mainly to offer encouragement.Best,Neil

A wonderful project! I do not think that the person who created this can be held responsible for knowing material costs outside of his familiar area. I wish the nit pickers would stop it!! There are some useful things to be learned here. Thank you.NeilRG

This made me smile. Elsewhere on instructables there are servo controlled air valves that could be used to control air flow out of the balloon. Obviously not having made one I've no idea how this wonderful little car with the added weight. But this is the synergy that comes to followers of this site.Cheers,Neil

Interesting chip. I'll bet no one says they "made one"..... ever!!!!How is this an instructable???