www.ranchbots.com/club/photos/photos.htm

Operation
Each leg is operated by a crank-axle and constrained at the top by a pin sliding in a slot in the chassis.

Operation
Centre legs operated by a crank-axle and constrained at the top by a pin on the chassis sliding in a slot in the leg. Other legs swing by push/pull rods from their tops to the crank-pin.

• Total length: 116mm
• Total weight: 135g (w/ out batteries)
• Body material: ABS resin
• Gearbox, motor, remote-control also included.
• A screwdriver for the assembly is provided.
• Requires two R6/AA/UM3 batteries (sold separately).
• Continuous running time with Alkaline battery, 2 hrs.

Operation
Same as BoeBotCrawler.

a two motor, six legged walking robot

Operation
Same as BoeBotCrawler except front and rear legs are connected by a rigid beam driven back and forwards by the crank axle riding in a vertical slot. And the middle leg is driven by a crank axle at the top and (must) have a vertical slot which slides on a pin behind the middle white hemisphere.

a two motor, six legged walking robot with a pic 16F819 microcontroller brain and infrared obstacle avoidance capabilities.

Operation
Same as Mechanical Insect.
Link from top of rear leg to crank-arm on Potentiometer.
The Potentiometers seem to be an unneccessary complication except when the computer uses them to count the number of steps each leg has taken.

Power from the rotating motor is transferred to the legs via link rods to make the horse gallop. Two link rod holes on the back legs allow you to choose between two running styles. Run on flat, smooth surfaces. Avoid running over slopes, on bumpy roads or on thick carpet.

Specifications:

• Total length: 193mm
• Total height: 95mm
• Body material: ABS resin
• Gearbox, motor, reverse switch also included.
• Stickers for horse's mask and number, and jockey's clothes are included.
• Requires one R6/AA/UM3 battery. (sold separately)
• Continuous running time with alkaline battery: 1.5hrs.

Operation
Same as HE-Walking Robot 4 legs, except crank-axle at rear and rear leg radius-arm goes to front axle.rods from crank-pin.

Power from the rotating motor is transferred to the legs via crank plates to make the tiger walk. 2 possible gear ratios coupled with 4 different strides let you choose 8 different speeds. A reverse switch also allows backward movement. A see-through switch with yellow transparent parts adds a cool, futuristic look. Moreover, this feature also allows you to see internal mechanisms.

• Total length: 155mm
• Total weight: 105g (w/ out batteries)
• Body material: ABS resin
• Gearbox, motor and reverse switch included.
• 2 possible gear ratios coupled with 4 different strides let you choose 8 different speeds.
• A screwdriver for the assembly is provided.
• Requires one R04/AAA/UM4 battery (sold separately).
• Continuous running time with Alkaline battery, 2 hours.

Operation
Same as Race-Horse, except mechanism reversed front to back.rods from crank-pin.

Based on the walking mechanism from the French set 9550 Mammoth.

Comments
Can't turn as only one motor

Operation
Front (to left) leg on a crank-pin on yellow crank-wheel and push/pull link to rear leg all in one.

• Build either 2, 4, or 6-legged walking robot powered by single motor.
• Use the sound activated sensor (pre-assembled) to start and stop the robot by clapping or making other loud noise.
• Simple, easy-to-build design uses small number of parts and pre-built gearbox.
• Assembly uses no screws, only simple-to-use yet secure push rivets.
• Uses two R6/AA/UM3 batteries (Not included).
• Sound sensor unit (assembled)
• Motor
• Universal plate (clear) x 2
• Long universal arm x 4
• Universal bolts x 4
• Push rivets (full set)
• Gearbox (pre-built)
• Battery case

Operation
Front legs on crank-axle, top constrained by radius-arm. rear legs operated by push/pull rods from crank-pin.

Toddler Walking Robot
inspired by BigFoot
www.parallax.com

Ambler Walking Robot
www.davidbuckley.net/DB/Ambler.htm

Someone has made a Beam version of BigFoot

Operation
Uses two servos, one to roll so the weight is over one foot then the other servo to move one foot back and the other forward

I have been unable to find anyone who has built this and got it to walk successfully. There seems to be a problem with the design. The feet need to overlap when walking otherwise it would fall over when it lifted a foot from the floor, however then the toes would hit when doing a skid steer turn (one foot goes back, the other forward). It may work due to sloppy enginering so that when walking the body sags and the in-air foot swings in so the toes overlap, then when turning, because the of the friction between the feet and the floor, the feet are forced out and the toes miss as the feet pass each other. The robot has a look which says 'build me' but I think you will be very disapointed if you do.

Uses overlapping Feet
Walks on two legs with the help of a microcontroller and the same electronics as the Hexatron robot. Also uses a twin-motor gearbox [Tamiya 70097 Twin-Motor-Gearbox] - one motor/gbox for each leg, an inexpensive H-bridge motor controller, leg position sensors, and the Sharp GP2D12 infrared sensor. See - Build Your Own Humanoid Robots

"...Each leg bends at the knee and has a position sensor (potentiometer) so that the walking routines can be accurately programmed. This robot gains stability statically by using a large foot in the form of three sides of a square.
...It lifts one foot up so that the lateral rods of this foot pass over those of the other, by bending at the knee. The center of gravity of the body is always over the foot that is on on the ground..."
Build Your Own Humanoid Robots

• Build either 2, 4, or 6-legged walking robot powered by single motor.
• Use the sound activated sensor (pre-assembled) to start and stop the robot by clapping or making other loud noise.
• Simple, easy-to-build design uses small number of parts and pre-built gearbox.
• Assembly uses no screws, only simple-to-use yet secure push rivets.
• Uses two R6/AA/UM3 batteries (Not included).
• Sound sensor unit (assembled)
• Motor
• Universal plate (clear) x 2
• Long universal arm x 4
• Universal bolts x 4
• Push rivets (full set)
• Gearbox (pre-built)
• Battery case

Operation
Overlapping feet, each leg on a crank-axle, constrained at top by red radius-rod.