Let's Make Robots!
Shines toward Spectator
Using a
The Starbot is a custom robot made for one of my sons. It is a star that shines and rotates to where the spectator is. My son found this wooden star-on-a-stick … Read more
Terminates all life forms
Using a
The Spaghuzzinator is a classic end-world-scenario robot. Evil and lethal. Strong and without mercy. A true bad guy. This robot is one part of an art exhibition … Read more
Creates and indicates a random number
The Chaot is my contestant for the LMRv4 Donor Appreciation Robot Challenge.  The machine creates a random number using physical chaos and combines the random … Read more

Total Chaos With Acceptable End Results

After the RobotParty the LMR party started and became one of the most hilarious moments ever experienced here. We had so much fun that this ShoutBox comments must not dissapear to /dev/null but must stay. 

There are JAX' hilarious comments, Birdmun's and Robo Paul's dialog where Paul points to himself. There is TheAndroidMan that keeps talking about food and fish so that most of us get hungry. AckJay starts to eat and makes us even more hungry.

Then there is the confusion about the winners and the alternate winners. Dan M won or not is the question.

Driving One Stepper Motor With L293D Using Two Pins

Question: Is it correct, that when I solder the following circuit there are only two pins nessessary
from the microcontroller to the L293D to drive a unipolar stepper motor ?

Answer: Yes. That is correct.


Question: Are the two NPN transistors and the 10kOhm pull-up resistors responsible for the signal inversion?

Answer: Yes. That is correct.


 

Worldwide Free Shipping. Why Does That Work?

Wether you order one chip, two microcontrollers, ten servos, hundred toys or thousand LEDs - you can
order them Worldwide Free Shipping from China.

When I think about that and all the hands my order go through from the online shop through local post through customs through harbor through another harbor through customs through trucks through local post to my mailbox. Shure there are even more steps and hands the order goes through.

Recycling Bin with Rapid Prototyper

What if you put your PET waste into the 3D printer instead of the recycling bag?

Is that possible?

Can we outline what is nessessary to build this machine? And why it is not available yet?

Did you donate already?

Let us know if you have donated to support LMR. Or why you won't.