By Antony Nyagah, Joshua Haug, Keaton Fisher, Hamed Al Dhuraif, Hadi Arbash
DISCLAIMER: Wichita state University and the GoBabyGo! team or any of its members are not responsible for any injuries to any person or damages to any object including the car caused by the modifications. Any type of modification will also void the warranty provided by the manufacturer of the car.
The Go Baby Go! vehicle (Link) was built and modified as a result of the collaboration between Wichita state university and the project team. Each member of the group worked on modification of the vehicle as well as creating the instructions.
This modified vehicle dons a new way of using the vehicle. The vehicle can move by the press of a big red button placed on the steering wheel. Additionally, the car is modified with a foot pedal that covers the floor of the vehicle so that the vehicle can move by pressing his or her foot anywhere on the pad. The vehicle also is modified with a kill switch to turn off the car immediately by the parent. Lastly the vehicle is given a switch that sets which way the car moves; either by foot or pressing the red button. The objective of the vehicle is to make it easier for a child with disabilities such as cerebral palsy to operate. Not to mention to help with strengthening the area of the body that has the disability.
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Step 1: Gathering Parts and Supplies
Below are the materials lists of all the parts
and tools required for the modifications. Most of these can found in hardware stores or the experimental engineering building at Wichita state university. Some of the parts have hyperlinks directed to the product pages for order. Extra wire can be bought at the local hardware store or the experimental engineering building at Wichita state university. The internal modifications require skills in wiring circuit cables.
- 12V MP3 Kids Ride on Truck Car R/c Remote Control, LED Lights AUX and Music Pink
Materials for all components of build
- several feet of insulated thin wire
- pack of female spade VW connectors (link)
- pack of male spade connectors (link)
- multimeter to read voltage and current on “hot” wires in vehicle
- wire stripper/cutter
- drill to make holes for kill switch and foot/button switch
- electrical tape
- wire caps (link)
- extra 8/32 nuts that come with vehicle
- extra8/32 bolts that come with vehicle
- extra 8/32 washers that come with vehicle
- box cutter
Setting up the on/off kill switch
- 1 single pole toggle switch for kill switch (link)
Setting up foot/button three-way switch
- 1 three way switch for the foot/red button (link)
Setting up big red button
Setting up floor pedal
Setting up seat pad
- pink foam board ( same board used to make floor pedal)
- velcro adhesive to stick all corners of pad (link)
Step 2: Making of the On/off Kill Switch
1. Open the main controlling board
by unscrewing the bolts on the sides.
2. Look for the main power switch.
3. Use the wire cutter to cut the two wires installed with the main power switch
4. Cut two extension wire
5. Use the wire striper to strip the extinction wires as well as the main wires from power board.
6. Use the Male/Female wire connector to connect the extension to the main wires
7. Used the electrical tape to tape the connection point, avoiding any wire shot circuits
8. Mark the position of the switch on the back of the car
9. Use the Drill Bits 3/16”and carefully make the holes you marked
10. Place the switch on the back using the 8/32 bolts Nuts and Washers
11. Use the mulitmeter to find the active wire that is from the extinction to place it with On input
12. The other wire will go to the off input.
Step 3: Creating the Big Red Button
1. Take apart steering wheel
2. Insert big red button through the hole the steering wheel was at
3 Follow the design in step 1 and make necessary connections inside the vehicle. In other words, splice the wire coming from the red button into two. one end going to designated pin on relay and the other going to the on/off kill switch.
4.use the wire caps, male/female connectors and electrical tape to secure connections.
5. Put back steering wheel in place
6. Once connections are made and steering wheel back in place. Use three zip cables to make the red button fit tightly to the steering wheel.
Step 4: Creating the Foot/pedal (three Way) Switch
1. Drill a hole the same size that was made for the on/off kill switch. This hole must be made on the right side of vehicle and about the same position that is shown in the pdf drawing.
2. Follow the diagrams in steps 1 & 2.
3. splice the wire coming from foot petal into two. one end of the wire connecting into the three way switch (diamond shaped figure with dashed lines in the diagram photo). the other end going to the motor.
4. use the wire strippers, male/female wire connectors, multimeter, electrical tape and wire caps to ensure secure connections of the wires.
Step 5: Creating the Foot Pedal Spring
1. Screw hole into the middle of the floor of left foot area. Make the hole large enough to fit the screw. Place assembly 1 (See instructions for assembly 1) into top of the hole and tighten from the rear with a washer and nut. Adjust the two sets of nuts so that the spring is even with the top of the pedal and the bolt is out of range of the board movement.
2. Place the board over the spring/pedal to ensure easy operability of foot pedal. It should be able to be pressed on any area of the board and the pedal should still actuate as before. It may be helpful to attach a 2” x 2” piece of wood on the back of the board where it touches the pedal to allow for easier contact.
3. Adjust the two sets of nuts so that the spring
is even with the top of the pedal and the bolt is out of range of the board movement.
Place the board over the spring/pedal to ensure easy operability of foot pedal. It should be able to be pressed on any area of the board and the pedal should still actuate as before. It may be helpful to attach a 2” x 2” piece of wood on the back of the board where it touches the pedal to allow for easier contact.
Assembly 1 instructions:
1. Place nut and then washer onto bolt. Slide spring, with large end first, onto spring from F.A #1. Place washer and then nut onto the same bolt. Next, place another nut and then washer on the bolt.
2. Slide spring, with large end first, onto
spring from F.A #1.
3.Place washer and then nut onto the same bolt.
4.Next, place another nut and then washer on the bolt.
Step 6: Creating the Footpedal Board
1. Position the board so that it lays on the foot pedal.
2. Slide the hinge under the board, so that half the hinge is under the board, and mark where the holes are on the plastic floorboard.
3. Remove the board and fasten the hinge to the floor by drilling two holes and fastening with a nut and bolt.
4. Slowly trim away a half circle area of the board until it can be affixed to the hinge and move freely around the steering column and side walls.
5. Create a identical cutout of ½” foam and attach to top wood board.
6. Affix the board to the hinge and continue to the foot pedal spring instructions.
Step 7: Creating Seat Pad
1. Cut foam board to the appearance you see in the photo.
2. Use the Velcro tools to create the adhesion of the foam to the seat to where it won’t move out of place.