Let's Make Robots!

Switching to Arduino

I was a basic stamp2 guy, I planned on using the Propeller for my next big robot, but instead of learning spin, I might as well learn whatever arduino uses, besides Arduinos have ADC's which I need and are fully compatible with Pixy, which I already bought. Question, what's the best (or really good) arduino for Phydo: http://letsmakerobots.com/robot/project/phydo-0 (Large, at least 6 servos, plus dc motors, at least 8 adc, tons of I/O, voice, speech, vision, etc) I was thinking Mega 2560 R3, (but not if it's going to be obsolete next month which usually happens to me) Should

Choose a motor stepper driver for Nema 17

I have 2 stepper motors Nema 17  (model and data sheet : https://s3-ap-southeast-1.amazonaws.com/...20RevA.pdf).

Do you know a good cheap driver for this motor?

I tried with pololu A4988 driver, but I don't like it. It doesn't have enough Output Current and I broke it.  

Thanks

Join the *LMR 3D Print Club*

Do you have a 3D printer?

OR

Interested in getting prints done, but have no printer?

Let's help each other printing more stuff :)

There may be a 3D printer or someone who'd like to pay for a print close to you..

Geneva mechanism on Arduino

I am trying to make a Geneva wheel using Arduino.

The hexagon Geneva magnificent mechanism allows a rotating wheel to stop at each of 6 steps on the wheel for a short while and them move to the next one. It can be designed for octagon, pentagon, or anygon..

see this link abot Geneva mechanism

http://en.wikipedia.org/wiki/Geneva_drive

Below is a suggested code for a 4 stops using a sensor on arduino. Can anyone comment if it works ?

Geneva

 

Arduino Speech Code

Based on a talking-lift-buttons project published on instructables (credits to ICstation); I have modified the schematic to the following:

- Arduino Nano controls the audio storage chip APR9600 which includes 8 messages.

- Arduino generates random 8 numbers

- each number calls one of the 8 messages.

The result, it will look like as if the Arduino is talking out of its own mind.(more realistic if we extend this systems into say 50 phrases or more which may need a different audio storage module than APR9600)

T'Rex Robot Controller Board Discontinued ???

 

Has the T'Rex Robot Controller board been discontinued?

I can't seem to find it in stock anywhere. All the sites I've checked has it listed as "Unavailable, Unknown Restock Date".

If so, why has it been discontinued?

And is there another board that is coming out to replace it?

full sized robot guidance

hey guys 

I just finished salvaging a power wheels kids three wbeeler

I plan on upsizing my avoidance robot

to this frame and do what needs to be done

with motors.

I have a question and I am confused

This toy has only one motor and a gearbox i supise

How do I go about using this or can I

I am wondering how this works

 

CONGRADULATIONS Junkster!

Junkster mentioned in the shoutbox he has been admitted here,

http://www.iitb.ac.in/newacadhome/btech.jsp

and I just wanted to say Fantastic Work Junkster and I think a little Bragging is in order.

3D model of psuedoscorpion

I am looking for a 3D printable pasuedoscorpion for my son. Any help and or hints will be appreciated.