Ballbot – assembled parts

I’ve been doing a lot of work since last time and there have been some changes in the design as well!

After I assembled a couple of parts in FreeCAD I realized that I had miscalculated (in my head) the size of some of them 🙁
I had to flip the base plate upside down to make room for the steering cradle and remove the friction wheels, because they wouldn’t fit anymore. I also had to make the propel wheel larger to get better grip and to make the ball go a bit faster.
The approximate speed is now somewhere about 10 km/h, which is a quite good speed I think.

Screenshot from 2014-02-25 11:52:48

The base plate front view – with motors and steering craddle and its servo

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Ballbot skeleton – Testprint

A couple of days ago I got a mail with an attached film clip of the first printed piece of the skeleton.

The day after, “Dubbear” came to my place and I got it in my own hands so that I could look, bend, squeeze and feel the first printed part of my very first CAD-project!
We took a look at my CAD-files and “Dubbear” showed me that my parts wasn’t made as solids. I had simply misunderstood how to build the parts in a correct way!
Later on I did some googling and it turned out that it wouldn’t be as much work as I feared to fix the parts into solids.

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Ballbot skeleton

It’s been quite some time since I last wrote something here, before the last post that is 🙂 so it’s about time I do so!

It all started when I saw a post on Instructables about a Remote controlled basket ball robot. I immediately started to plan how I could make my own – who doesn’t want a remote controlled ballbot!

Since I’ve got a lot of R/C parts laying around I figured it wouldn’t be too expensive to gather the rest of the electronics needed, a DC motor and an ESC.
In the instructable the author used a 7″ (17.8cm) hamster ball as the housing for his ballbot. 7″ is quite small if you want to fit sensors and other fun stuff into the ball and really make it into a robot, not just a radio controlled ball. Continue reading

555 TARDIS v1.0 files

I finally made some schematics for the TARDIS! I also noticed some minor design flaws, mostly aesthetical but no show stoppers! Stay tuned for v2.0 😉
The Schematics are a little bit different than usual. I made them on the top layer PNG of the PCB so it will be easier to see where to put the components.

Schematics

TARDIS-monostable
TARDIS-astable
TARDIS-frequenzy_divider              Continue reading

The TARDIS has arrived!

Yestarday I finally got my shipping from Seeed Studio! It’s always satisfactory to hold and look at a PCB you’ve designed yourself.

My own time machine

As soon as I get time I will start to draw the schematics for as many circuit layouts as I can find for this PCB. I’ve estimated it to somewhere about 15-20 different circuits that will be possible to build on the PCB!

Also see: 555 TARDIS