BS2PX and Servo Motors

wafa86

Hi

I wrote a program to control the servo motor via bluetooth and it is working but not at the required level. I am reading the book of BS2 and I found out the programming of it has different numbers than the BS2PX. I used this code for forward movment:

PULSOUT 12, 2100'counter clock wise

PULSOUT 13, 1650 'clock wise

but the motion of the motors is not smooth, the motion has little vibration and not moving in stright line, it moving forward with simple heading direction to the left.

Can any one help me to find the appropriate number to use it with PULSOUT command and the equation to find out the pulse width in milisecond? and how do I calculate the RPM (rotation per min.)??????

Franklin

You need to add more to your program to get it to work a pause 20 and a loop. get 'what's a microcontroller' and the book on the boebot from the resourses tab of the parallax site and read up on the syntax and programming.

wafa86

I tried PUASE 20 it make the movment more slowly so I remove it and of course, I put it in a loop, this is BS2PX module and I need to know the equation and the specific number to control the duration, the book is all about BS2 onlyyyy and I could not find any refernce mention BS2PX using servo motors, only the Penguin Robot Kit, the site mentions some thing about servo motors since this kit is using BS2PX and I saw the code it is complicated and not helpful!

Mike Green

There's a supplement to the Stamp Manual about the BS2px. You can find a link to it on the Parallax Store webpage for the BS2px. It has the timing information for the BS2px. You may also be able to find the same information in the help files of the Stamp Editor.

W9GFO

If you search for PULSOUT in the help files you will find this;



Rich H

wafa86

okey now I get it thank u all