Let's Make Robots!

Mr. Basic

Mr Basic - drive train too stiff for motors to move...

I just picked up a Mr Basic kit from one of those free shipping Chinese stores. It's gone together OK, but the drive train is really stiff and the motors can't move it (even on 6xAA NiMH). Any tips?

Navigate by commands from android device or computer
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Update #2 10th June, 2011 Added another video showing the robot doing tight pirouettes on a small kitechen scale. Update 10th June, 2011 Added new pictures, which … Read more

Mr. Basic axles

This one goes out to those who participated in the first Mr. Basic Challenge.

The first batch of kits that DAGU Electronics sent out had some bad parts in it, and DAGU was quick to replace those parts, and the problem is fixed on the later releases.

 Now I wondered if anybody got 4 replacement wheel axles (2 fronts, 2 backs) and kept the old ones? You see I need those old ones...

So if anybody is willing to post'em to Norway, I'd be really grateful.

Wakes people up and runs away with alarm clock on his back :)
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Ok, It came to the piont Mr. Wake got some shape, so I'm posting it here. Wake is Mr. Basic V2.0 contest entry, and he is intelligent annoyeing alarm clock bot :D. … Read more

Mr. Basic Motor Driver Kit Problem

Hi, LMR!

I need some help with troubleshooting Mr. Basic Motor Driver board. Basically, I couldn't make it work. I use 4xAA Alkaline batteries [5.8V actual voltage] as power supply. MC Picaxe 18X. Relays are working fine, but Motors are not. With my little experience in electronics I guess BD681 does not open for some reason. But not sue, I might be wrong...

My setup:

Trouble1.jpg

Troubleshooting done:

Mr. Suspense

Just starting a build blog for the Mr. Basic Challenge II.  When I get some more progress I will post pics and make a robot page.

I'm still developing ideas, but I liked Gareth's work on a suspension system for the original Mr. Basic Challenge, so I'm starting with that.  My suspension will use steel cable instead of polymorph for a flexible power transfer system.  Ultimately,I want to try a four wheel independent suspension, but I will start with the front axis being on one suspension platform and the rear on another.

During the first Mr. Basic contest some people had trouble driving their motors because of the current required and because of the low voltage provided by Mr. … Read more
Navigate around via ultrasound. Detects fire and fight against it.
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This is my competitor for the LMR DAGU contest. It is named Mr. "Red" Adair, named after the well known firefighter Paul "Red" Adair. An Atmel ATmega328 controller … Read more

LMR DAGU Contest rules anyone?

Oddbot mentioned in another post that some rules would/should be announced regarding the LMR DAGU Contest.

I thought the rules were vaguely outlined as something like:

1 Use the Mr.Basic kit.

2 make sure your robot is way cooler than the other contestants.

3 good luck.

-So, do we need any more rules? Do everybody have to use all the parts from the kit? Which partscannot me excluded? Is there an upper price limit?

This is Mr. Tidy, his job is to pick up bottles and glasses after a party and put them in a tidy pile.The third video shows him picking up his first can. Read more

Simple motor control for Mr. Basic

I have seen a few people asking questions about controlling Mr. basics motors. One problem is that they draw more current than an L293D can handle. A L298N will do the job but you will want at leat 6V. Below is a schematic of the simplest way I know of to control your motors. Using a 5V relay you can run from 3.6V to 6V. I suggest a 9V relay if you want to use 7.2V.