Let's Make Robots!

Sabertooth 2x25 vs 2x32

Hey everyone,

I'm thinking of upgrading Artie's drive system to use 24V for this motors (the rating of the wheelchair motors), and I'm in a toss-up between the Sabertooth 2x25 and the 2x32.  Now, normally, I would just get the 2x32.  For the same price, you get 7A more current per motor, plus USB feedback!  However, I'd like to get people's opinions.  Has anyone here used the 2x32?  How useful is the USB feedback?  I plan to have Artie run off of a laptop.


Thanks in advance.

Hexapod queries

Hi everyone,

I have been thinking of building a remote controlled hexapod from scratch including the code. However having never built anything like it and having basically no experience with arduino, I have a number of querys I would like your opinions on.

Cost-effective 12v motors

I'm running a small robot project. I'm considering to switch from my 5v plastic motors included in the starter kit, to 12v ones. I'm considering to have the robot weigh 20-30lbs occasionaly, though as is, it can't haul maybe 10lbs very well.

Cost is REALLY an issue to us right now, so I'm thinking of recycling some parts, putting in a used go-cart battery for the (nearly) 12v, but I don't know what I need to in aspect to what gear ratios are required before searching EBay (where I get most of my parts, being on a TIGHT budget.

Thank you for any input! 

I found the perfect Hallowe'en costume for BDK!

Okay, this version is the wrong gender, but ya'll know how Mr. Cooke LOVES

Arduino, right?

(Happy Halloween, Sarge! ;-)

serial port grayed out in Arduino IDE

I just purchased a Red Back Dagu Spider board and a hexapod kit.  But when I plug it into the USB, the serial port on the Arduino IDE is grayed out so I cannot upload any porgrams.  I've tried two different cables.  Any suggestions?

Thanks in advance for your insights.


New Gripper Kits

Parallel Gripper Kit A - $14.99

Gadgeteer Compatible on sale

DFRobot will make you cry by reducing all the Gadgeteer Compatible products.

Take a look here and wait for more price drops: DFRobot Gadgeteer Compatible

For example: OLED 9664 color display module for $US5.05 instead of $US28.95

Step Motors

Hi to everybody:

My name is Rafael Lezama, I'm live in  Puebla, Pue. México.
I am electronics engineer and I like a lot your web.
I have a question, I hope someone can help me.
I have some steps motors but I haven't found information about them.
I could already identify some cables, but I can't make run them.
I send some technical data and photographs of these engines, and hope can help me.