/robowaifu/ - DIY Robot Wives

Advancing robotics to a point where anime catgrill meidos in tiny miniskirts are a reality.

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Reports of my death have been greatly overestimiste.

Still trying to get done with some IRL work, but should be able to update some stuff soon.


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Welcome to /robowaifu/, the exotic AI tavern where intrepid adventurers gather to swap loot & old war stories...

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Open Simple Robot Maid (OSRM) Robowaifu Technician 07/11/2021 (Sun) 06:40:52 No.11446
Basic design for an open source low cost robowaifu maid. Currently attempting to make a maid that looks like Ilulu from Miss Kobayashi's Dragon Maid. Right now she's an RC car with two servo steering. Will share designs when they're a tad better. Ultimate goal is cute dragon maid waifu that rolls around and gently listens to you while holding things for you.
>>11446 Cute! So I can't work out exactly how it moves. Are the two wheels going to be the powered wheels, or are they mostly for steering OP?
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>>11447 She has a drive tail that pushes her while her front servo "legs" steer her. I had problems getting small cheap motors to match their speeds without a microcontroller and encoders. This way is simpler and lower cost.
>>11446 >>11449 Very elegant design. I like how almost every part is either electronics or part of the structure. Of course the waifu decal holder too, nothing wasted XD Also good idea with the rubber band tyres. I remember that wheels and grip were a pain when making small servo robots.
Nice work OP, I commend your initiative. We look forward to seeing your progress with your OSRM robowaifu!
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Been working on a generic interconnect system to enable anyone to build full scale waifus that are reasonably durable cheaply and fast. Current system is going to use hooks that go on bamboo skewers that connect to groups of rings. This essentially allows for polygonal modeling in real space. Bamboo skewers are cheap, easily accessible and trimmed to exact lengths, and surprisingly durable when used as structural material. Picrel is first successful proof of concept and some ideas for a low poly body to try creating using this method.
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>>11579 Neat. I have two modest packs of skewers I've been contemplating using in a tensegrity-type arrangement for structural components of a larger robowaifu. Pretty similar to yours, but using 3 or 4 skewers per structural element.
>>11580 I actually tried doing a tensegrity design with twine and bamboo. Unfortunately, the twine made the body really wobbly. The hook design also got really wobbly with anything substantial. I'm working on using clasps now. Some notes to help, simple knots in twine have a diameter of 3 mm, twine tends to be about 1.5 mm thick with a 1 mm slot being effective at holding the twine coming from the knot. I also recommend printing a jig with two 1 mm slots spaced apart to repeatedly create lengths of string of a defined length. Tie a knot, pull the twine through the slots so that one knot is firmly against one slot then, tie a knot firmly against the other slot. This will give as many lengths of knot ended twine as you'd like. If you get tensegrity to work, please share!
>>11581 >If you get tensegrity to work, please share! I definitely will, but I'm not able to put a lot of focus on it atm, could be a long while.
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>>11581 Though a failure, the concept of creating polygons in real space through clasp based lines and vertices is proven.
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>>11586 Finally found a successful design
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>>11595 Too floppy
>>11600 I'd recommend you investigate the space-frame designs used in racing cars Anon. Triangles, it's all about the triangles.
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>>11606 Bretty cool advice anon. Started working with cheap TPU for simpler more durable connectors.
>>11613 Yup. The ancients back in the day figure out how/why tris work so well. There's a reason it's named Trigonometry, not Quadronometry. It's also why all polygonal meshes in 3D systems first decompose everything into triangles first before rendering, regardless of the higher-level forms they may be modeling.
Why don't you post the modeling/STL files for your connector designs somewhere for us to use here on /robowaifu/ Anon? Please license them as MIT (Expat) if you wouldn't mind thanks.
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>>11613 Here's another nice example of space-frame oriented kit racecar chassis design. http://spartanv8.com/
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>>11614 >>11618 I'm constantly redesigning everything, each iteration usually being a major improvement. I'll start sharing designs when I've made ones that won't be immediately deprecated. I'm transitioning to a hybrid approach. I'll print "slices" of the waifu then connect them with triangles. See picrel for basic idea.
>>11651 Sounds good Anon, thanks. One thing you can do is glue paper, cloth, plastic sheets, etc., to the outer portion of your frames as a shell. Not only does this fill out the form of your robowaifu, but once the adhesive sets, the additional planar support to the frame struts actually helps to rigidize the entire spaceframe further. This is a common technique with race cars, and is clearly visible in 2nd pic related, where welding of aluminum sheets to the tube frame was performed. >>11614
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>>11654 Published some bamboo connectors here. https://www.thingiverse.com/thing:4914882 Any suggestions on what plastic to use as a support wrap for her frame? Keep in mind this needs to be inexpensive and easy for fellow anons to build
>>11667 As I recommended to Sophie Anon recently, you might be interested nine EVA foam and how it is used in cosplaying. This is probably the lightest material, which isn't paper or some film. Otherwise, I'm not sure if it can be handled carefully enough to make it save, but a lot of bottles for things like milk or some cleaners (cloride) are made of HDPE, which has a low melting point. Also, this guy from India in the video I posted a while ago used some kind of foam. Probably the same which is used for resin casting. We have thread for materials by the way: >>154
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>>11667 Settled on a simplified leg design that'll function as her driving suspension with a rubber band for a spring.
>>11681 Cool. You might check the Prototypes & Failures thread for some discussion on a somewhat similar design (>>418). Keep up with the design explorations Anon, you're making some headway!
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>>11682 I actually started out with that design. From there, I simplified things to be as simple as possible. The key was that the knee joints needs to be exactly half the length of the hip joints. Now I'm printing her modular ass but it'll take a long time.
>>11669 >>10315 is on the foam robot from that (probably) Indian guy.
>>11685 Nice. Good to see someone else attempting to build their robowaifu!

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