Let's Make Robots!

read raw gpa data from gps module to arduino

Hey guys I am trying to read raw data from a gps module using TTL communication on RX pin 0 on the arduino mega. i dont know how to program it since i am total noob at arduino programming. 

can someone help me out please.

Controlling motor speed with 293 without a POT

This is my first step to robotics. In this project all i did was use an arduino with L293D to control the motor speed without a potentiometer. this was actually an assignment / a small test given to me by CtC (chris the carpenter). the motor is suppose to speed up and down with a delay. 

"stop - ramp up - hold - ramp down - stop"