14 more posts in this thread. [Missing image file: image.jpg]
Hi /diy/, I have just took my graduation in electronic and telecommunications, and I'd like to test my skills building a theremin in the cheapest way. After I had this great idea, I realized that I'm not so good at inventing, so I was wondering if someone have a schematic and a PCB or a master of the necessary circuits, and some tip to share with a bro. Thanks
7 more posts in this thread. [Missing image file: 53476037-6272-4950-80b2-d1a1da8a88e4_300.jpg]
So I have a self-propelled mower that I want to use, a servo to pull the power wire will do fine for the propulsion(the lever on the handle has a wire that when pulled makes the front wheel drive move forward). Since it is front wheel drive I'm thinking of putting the batteries and control systems on the front with just the steering rack in the back, more weight in the front means the wheels will get better traction.
I don't plan on modifying the motor/ bed much. The remote controls and steering system is all I'm adding and they will be separate systems from the motor and propulsion.
So what is the best way to go about turning it? Is there such a thing as servo motors big enough to turn a steering rack for the rear wheels, and could it be simply powered by something like a car battery? What about a pneumatic turning system, would that be easy to do?
My main concerns here is spending minimal money on this and having it be not too complicated. I already have a remote control for it, and I can build some simple power relays and control circuits for it.
So does any /diy/nosaur have experience with RC mowers? Or better yet know how I could make a simple turning system for this?
Making an RC mower but don't know best way to make turning system. Again, I plan on using the self-propelled part of the mower for its propulsion; so the steering has to be separate from the propulsion system. Picture related, it's the mower I'm modding.
DIY Mario Bross w/ music incorported
2 more posts in this thread. [Missing image file: WP_000249.jpg]
Well, hello there,
I was planning making a Mario (N64) for my Modelation and Representation class.
And I was wondering if it was possible to put in her back or something (like some music incorporated teddy bears) a music box wich plays Mario Brothers music (I hope you know what I'm talking about).
There is any way to create a music box (like the one who have the talking toys or teddy bears) with customized music? I mean, I am not en engeenier or anything related to that, just a IT Guy (lol). So, any chances to create or easily made what I am talking about?
Pic realated, that was an early stage of the Mario.
3 more posts in this thread. [Missing image file: whitegrey_2.jpg]
I want to paint my 3DS XL to be white and black instead of red and black. The intent is to leave it with less 'shiny' finish (not that it's that shiny as is) and also to apply a vinyl decal. Because I am conflicted about decasing the hardware and then painting the case, I intend to try doing it while the device is still put together. Thus I have this plan ready:
1. Sand down red parts with extra-fine sandpaper (I'll be using 800 grain)
2. use scotch blue painter's tape to cover up all black parts that should remain unpainted
2a. cover electronic ports, lights, camera lenses, etc. that could get paint on/in them
2b. apply tape very carefully around edge or red space to paint so that I can get a very sharp paint line as on the original paint job and not leave any red behind/obscure any black paint
3. use Krylon Fusion Flat White paint on the red part of the shell to be painted
3a. Repeat for the bottom battery cover (which is easily removed and thus not as big of an issue)
4. let sit and dry
5. apply decal to dried white surface
6. apply Krylon Fusion Matte Finish to newly painted surfaces
7. let dry
Are there any bad points in my plan, or anything I missed that needs to be addressed? Thanks for the assistance. Pic related, what I'm going for is the top but with white instead of grey.
Trebuchet pt 2
3 more posts in this thread. [Missing image file: Three-Quarter inch PVC - All Parts (...).jpg]
Hello again, /diy/. It's OP from the trebuchet post >>470847 . I'm running into some brick walls with the materials I have. I'm using 3/4 white PVC for the frame, 2ft high with a 28" support pipe on either side of both uprights, for a total of four support pipes. For the actual throwing arm, I'm using a 6 ft wooden railing beam, it's about 1.5" in diameter.
The problems I'm running in to, however, are that I'm having trouble figuring the best way to secure the PVC to the wooden base, and the best material to use for the axle of the throwing arm. The weight I'm going to be using is 2 chainz, each approximately 20 lbs, so I'll need something able to at least hold up 50 lbs without bending, and it also has to be less than 3/4 in diameter. I was thinking a steel rod would serve the best?
Also, are 6 3/4" pipes even able to hold up ~50lbs, or am I fucked from the get go?
<pic related only because polyvinyl chloride