Let's Make Robots!

Servos powered by arduino board

Alright, I'm using an arduino pro mini, rated at 5v with a 328. I plan to have two GWS pico servos attached to the board. My power supply for the pro mini is 4 AAA batteries rated at about 1000mah. According to pico servo user the servos have a peak current draw of about 500-550 mah. My question is can my servos be powered directly from my board or must they have a separate power supply. I've asked a few so far and different opinions came up and they told me to start a forum. I could use a different servo with a smaller current draw. I just wanted to get your opinions.

LMR "mark all as read"?

Is there a way to mark all items as read so that the "Unread posts" page can start fresh?  (Other than actually reading all posts?)


18 Pin High Power Project Board with Serial LCD


i'm looking to add a serial LCD for my cat feeder but is it possible when using 18 Pin High Power Project Board .if yes..how is the connection...sorry if the sound stupid but i rather ask first rather than waste money with part that doest fit.

p/s:i would also add a clock Upgarade to the board.do i have enough connection


thanks for the input

How to increase Torque and reduce speed


i'm building a cat feedar using a rotating hooper..my problem is the rotating speed of the hooper is too fast and don't have enough torque..A few suggestion that i have gather is to buy a new motor with higher ratio.is there any other way to accomplish the same result?

since i have 5 cat.. i'm still looking a way to dispense the food into 5 tray(if possible)..anyone here have any suggestion how to achieve it...Maybe using rotating tray?(but still the same problem with the motor ,not enough power)



Wireless for cheap?

I was wondering how would go wireless for cheap, i was thinking of using ir or rf but where would i get parts for them?

PICAXE in Malaysia



Anyone whre know where to get PICAXE in Malaysia(south east Asia).



how to modify an Hs-55 micro servo to act like a GM10 motor

Hi all,

 I planned to use the HS-55 micro servo for my YDM-clone, but after playing a while with an arduino, it's seems that it's not fast enough to achieve nice rythm patterns...

Do you know if there is a way to modify it to speed it? (Maybe removing the electronics or something)

if not, do you know other good alternative  to GM10 motor? as I can't find any resellers in europe  (and i don't want to pay shipping cost from UIS that double the price of those tiny motors).

Thanks in advance

My first robot

Ok, i am VERY new to the robotics "world" and i was wondering if anyone had a good design that doesn't cost very much, because i am a kid and dont have a job so a fair sum of money isn't really in my grasp.

much apreciated.

Is there such a Thing as a Program Optimizer?

Is there such a Thing as a Program Optimizer?
After you have gotten your program to work fine in what ever language (C for me right now), is there a Second compiler you can put it through that it would search for code that would do the same thing with less code and replace the main code with the shorter code and make things run faster?
It is a silly idea, but it seems it would certainly save some time and be very useful, at least to me.
If they make such an animal, what would it be called?