White Papers
VEX Joystick Battery Modification
Carroll Robotics
1/15/15
The Problem
The VEX net Joystick currently runs on six AAA batteries, which ultimately causes a limited lifespan when used in the field. The action of replacing and maintaining replacement AAA batteries leads to an inefficient method of having a functioning controller.
The Proof
During competition, often times, technological errors are encountered. More often than not, these problems are caused by an issue with the batteries that run out of charge at critical moments during competitions.
Basic Solution
This problem can be solved by simply having a larger and more effective battery. This change isn’t crucial, but allows a longer lifespan for the controller, helping to solve the technological errors.
Our Proposition
Modifications can be made for an adaptor to be placed on the controller, allowing a 9.6 Volt battery to be used in place of 6 AAA batteries. Two AAA batteries are placed inside of the controller, with wires soldered to it. The wires are then secured into an adapter made from a male battery connector. A metal assembly is also attached to the controller to act as a mount for the battery to allow the battery to be placed securely.
Critical Parts Specifications
· Old Battery Configuration: 850mAh; 7.2V (Quantity: 6)
· New Battery Configuration: 1000mAh; 9.6V
Materials
· 9.6V Power Pack
· Male Battery Connector
· Red + Black Electrical Wire
· Cutting Device
· Electrical Tape
· Wire Cutters/Insulation Strippers
Method
A male battery connector that can be purchased or refurbished is soldered to two wires that are soldered from the other end to two AAA batteries; holding the wires into the controller terminals. The modification is capable to be removed if undesired or unsuitable. The two batteries are placed in the two uppermost terminals of the holding area. The batteries aren’t necessary for the modification, but only act to hold the soldered wires in place. The only physical change is to the controller to allow the wires to protrude from the bottom. The process is easy to convert to its original method.
Other
An assembly consisting of VEX net metal is used to hold the battery pack in place. A clearance of 1-1.5 inches is used to ensure that it doesn’t interfere with the cords needed for the partner cable/competition terminal.
Pictures