Can avoid man made obstacles using infrared range finding.

[andycondon]

• Can determine presence of obstacles directly ahead.
• Can determine presence of obstacles to the left and right.
• Moves forward if there are no obstacles directly ahead.
• Banks left or right to avoid an obstacle directly ahead.
• Accounts for an obstacle directly ahead and to the left.
• Accounts for an obstacle directly ahead and to the right.
• Reverses direction if obstacles are in all directions.