"… promotional tool, robot educator for kids…": I hope to finish (or at least make it functional; at least locomotion and arms) till september, when will have a LEGO robotics competition for kids at a local university. I will not attend the event, but I like going to inspire children, make contacts… and how such event is rare here in the region, I have to take avail.
Martin (my little boy) is becoming interested in robots. So MDi #4 will be a great tool to take he into robotics.
And, finally… those hands will serve me drinks (nonalcoholic).
In 2014 I was very tempted to build something really BIG and I became highly inspired by this one (https://www.youtube.com/watch?v=cFwEiG4I-Wg). Then I started some fiberglass work for it… but ended giving it up, because it seemed to me an endless project, with high costs.
Thank you very much, Martin, for your always kind comments.
My projects, after a while, always end disassembled… with its parts being used in new projects. But for MDi #4 I defined previously that I’ll keep it assembled.
I have absolutely no doubt that you have the skills to do it, it becomes a question of finances and ensuring you set aside the time to complete it. If you did ever start something along those lines, it would be nice to see you create it in such a way you could produce a small production run - even hire someone to make copies. Many people want large robots.
As an alternative to disassembly, you could consider selling off your old bots and using money to pay for new projects.
Another advantage to selling them to someone like me that has a passion for software (and preserving the bots), is that you might see your original creations evolve over time through Youtube.
P.S. for the UPDATE: note that the chest is ready now; the chest got very fragile after some adjusts, so that additional detail in the front is also a reinforcement (polystyrene pieces); that hole in the center is for a speaker.
quote: " I expect to make a cool and strong robot with these parts.“
3. Have you tried galvalume as material ? galvalume metal is pretty strong and lightweight.
quote: " I was a bit concerned about the DC motors for the treads, but fortunately I found good ones with 25 kgf-cm and 233 RPM @ 12V at a reasonable price.”
4. What is the motor ? is it rated torquee ? How much price ? where to buy ?
1. I designed it to have 80 cm of height. I don’t know the weight yet. But I’ll weigh it when done.
2. High impact polystyrene is a kind of plastic. I guess it have the ideal weight for my projects. According to required strength, sometimes (most of the times) multiple layers combined are needed (you can see some parts with two, three, four and five layers) and some parts I also used aluminum channels to reinforce them (you can see the use of aluminum channels in the chassis).
3. I’ve never tried galvalume.
4. Later I’ll post more pictures about the chassis, which shows the DC motors. It’s stall torque. About 25 USD each, plus shipping cost. I bought them from www.mercadolivre.com.br (works like a kind of eBay, here in Brazil).
