Let's Make Robots!

30 Posts in 30 Days (Personalized tutorials just for you)

I have gotten to the point where I can start to step back a bit from the business (Rocket Brand Studios) and take a breath. I have everything refined a bit, parts coming in and orders going out is becoming very routine. This all translates into a bit more time for me to do what I wanted to do in the first place --get folks going in their new hobby. 

I am starting a fairly ambitious project. I am going to attempt to do 30 posts in 30 days. I see the same topics come up around here often and gosh darn it, I think I can do a good job at explaining them. So I shall. --As an example, sending data via a serial connection (IR, RF, Xbee or with a wire) comes up a lot.

If there is a robot-related topic you would like explained, please let me know. For each topic I hope to include:

  • Hardware --Wiring, boards, hooking stuff up
  • Software --Example code, but more importantly a code walk-through (line by line)
  • Googleable search terms

If you all would be so kind, please let me know what you want to learn about. It will most likely get added to the list.


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I am up to about 26 items on my list so far. I am getting close to kicking off this little event. I hope to get a week or so of them done in advance so I have a little fudge room, but we are getting there. This is going to be a fun little project, methinks.

As you use stepper motors a lot I would like to read about precision stepping. A precision that is needed for CNC, 3D print or LMR print challenge.

here some questions you could answer:

  • What (low-cost) stepper motors do you use and why?
  • How do you calibrate the motor for precision?
  • Are you fine with the open loop or do you close the loop using additional sensors?
  • Do you recalibrate? When? Why? How?
  • How do you tackle speed versus precision?
  • What driver chip have you used and is there one you suggest for our average use?

as this is Chris' thread I will await patiently. :)

A tutorial on screws, standoffs, holes, and mounting would be really useful!

Thank you and I appreciate the thoughts on combining other tutorials and creating clean, organized ways of dealing with the tutorials. I think all this is great and I am happy to participate. That said, this is really more an excercise for myself. Sorta a self-dicipline thing. RBC is kinda running on the smooth side -at least to the point where I can finish all my chores in about a 1/2 day now leaving some time to do what I wanted to do with the busines --help folks make stuff. It is very tempting for me to start playing with this extra time --making silly projects just for myself and generally just screwing around. I thought I would assign myself some homework. --Idle hands and the Devil's workshop, ya know...

Should be fun. --Keep em' comin'

Hi Chris,

 Not a tutorial but a page or two about how you develop a design and the tools and work habits you use to bring it to fruition would be great, what is your process, what steps do you take to get the design done, if it does not meet exspectations how do you step back or in and correct that, I have been following your cnc build and have been very impressed with how you over came those obsticles, he-ll, I guess I'm asking about your creative process, what works for you not saying it will work for me but it just might

And Chris any code WALK thruv would be a big help I'm 51 and a newbie I do not get what most here take for granted, a tutorial for idiots would be perfect for me

Ok now I am beeing realy needy how about a board design tutorial like how you designed your 08m board, I know you have designed much bigger stuff but rules of the road for designing a board, or smart use of a proto board would be great

Oh I just thought of a good one that is probably right up your alley. I'm about to buy and house and finaly start putting together real workshop. Maybe you could do one on what a robot builder should have in his lab to make his life easier (and on a budget of course). Maybe talk about hand tools, what types of materials are good to buy in bulk, which type of welder would give us the most bang for our bucks. Maybe you know how a regular joe can come across bigger tools for cheap, like band saws, 3 axis mills, and lathes. 

Good idea Chris, probably the best place to start is by posting links to tip/walkthroughs that are already on LMR. For example, Maxhirez mentioned batteries and battery chemistry. DanM already did a great walkthrough on that very recently.

That will cut your workload and allow you to focus on topics that have not been covered in detail.