Two motor walker robot.

The two motor walker is a walker with reverse. When it hit a obstacle with is front feeler it will back up and turn for 5 seconds.
Circuit :
1- 74HCT245
4- .22uf Bi-polar capacitors (Violet)
1- 30uf capacitor (Yellow)
2- 47K resistors (Green)
3- 1.6 Meg resistors (Red)
1- 2.5Meg resitor (Blue)
1- switch to power my creature
2- switch for the front and back feeler.

H-bridge:
4- 100K resistors
8- NPN 2N3904 Transistors
4- PNP 2N3906 Transistors
2- Servo motors



Chassis :
2- servo motors
2- AA battery holder from old electronic Kit
1- coat hanger for the leg.
2- plastic horn to attach the leg to the servos
1- metal case to hold the electronic component from a Super Nitendo Bazooka
1- switch from a Walkman for the power
2- switch for feeler from a VCR
1- mecano bar to hold the motors
Here are some advantage and disadvantage and some improvement for this robot.
Advantage :
• The circuit if very small and protect from impact.
• Compact design.
• Back up and turn when it hit a obstacle.
• No need of PCB board.
Disadvantage :
• The circuit is not easy to understand.
• Make small step
• Doesn't climb big obstacles