SBot2 brought me many learning experiences and the like Sbot 1, it has enabled me to rebuild it with a much better design. Building SBot 2 brought many good and bad times. A lot of money spent with very little much to show for it, except for a robot that can go forward and backward and "try" to stop before it hits an object.
So for a farewell, here was a list of it's problems:
- Wasn't fast enough to stop when the sensor picked up a object in front.
- Motors were not able to draw enough current to turn smoothly or even at all especially on carpet.
- Power system was inefficient with the use of step-ups.
- Poor build quality of wheels and therefore would not drive straight or wheels would fall off.
- No wheel encoders.
- Very difficult to work on and get to all the parts for repair or testing.
- Bad connector for Wii Nunchuck.
- Microphone didn't register much.
- Current sensor didn't register much.
- LCD dims when motors start.
I did try to fix the turning problem by removing the two front motors, which helped a bit. You can see how it turns in the video below. If I hadn't decided to start over I was going to try a caster in the front but it would of been just another work around.
Taking these problems into account and what my goals are for my Security Robot, I can build a much better design. Most of the parts will be reused for version 2 except for where things didn't work, like the power and motor control systems. These will be redesigned from the ground up.
Here are a few final pictures and video of it's last run: