Let's Make Robots!

PWM motor controller

Hi,

I have a MC33886 motor controller, I know it is capable to go forward and reverse by using the inputs IN1 or IN2 for choosing what direction you want.

Can you tell me if you know a motor controller pilot by PWM and using only one INPUT ?

Something like:

- time 1= full reverse

- time 50 =stop

- time 100 = full forward

new arduino for $49

The new arduino, the DUE is out today.

 

Its a 32bits, 87Mhz !

 

A good toy for us.

printed circuit

what is your best tools for your printed circuits :

- Softwares if you use for the design ?

- what paper or plastic phot if you print it ?

- what photobox (home made joint a picture, please) if you did ?

- what product did you use (board, revelator, acid, ...) ?

- If you didn't your circuit yourself, where did you order ?

 

thanks

scavenger

I know like you guys, you are a scavenger, like me, we love that, we save a lot of money, and always expect have enough space to stock everything we can found.  Unfortunelly, around us, nobody understand why we save a lot of things.

 

But, I have a major question, I expect a lot of answers from everybody :

In my town I have 3 thrift store, with a lot of stuff, by experience what do you think is the type of printer (laser, jet, pin) I need to scavenge to found a good practical robotics parts ?

 

thanks.

website about batteries

Here is an excellent website about batteries and charging process :

http://www.powerstream.com/home.html

engineering phase of my first robot, lot of questions !

Hello everybody,

First of all is a brief description of the robot I dream to built :

- processor ARDUINO

- Outside off-road (on the grass of my back yard), night and day

- completely autonomous guardian robot ( to chase the squirles off my vegetables garden)

- auto-recharging by bay charging station and also solar panel (I live in California, a lot of sun)

- loaded with some weapon like sound, light or projectiles.

- eventually the option to install a camera and R/C command (for the fun)

 

The questions :