The group have faced the problem that mechanism wasn't able to jump. So the group decided to change a little bit a body and make it lighter and that will give the stings more force. The body get the different look, but now it looks more like a grasshopper. The hopper was built by using the LEGO part which is mimic the body of the project also, it includes two XL LEGO Motors which is connected to springs and legs that are built from the Lego’s parts. The first jump of the hopper was weak because the body of the mechanism was heavy and the spring doesn't have enough force to make it jump. Over the weekend, the group have tried several different ways and calculation to figure out have improved the solution. Finally, the group come up with an idea to rebuilt the body and make it lighter as a result of that, it will give the springs more force to jump. The power hopper will receive from two motors, which will be attached to each leg. The motors will be connected to the 9 Volt Lego’s battery. Such as battery is heavy group have decided to attach the long extension to the motors and placed the battery on the wheels. That will give the battery ability to follow the hopper and will let hopper make safe jump and land. However, the spring is attached to each foot and gears. The hopper has a four legs that give mechanism the stability to land safer. The motors are operating the legs by uncock and cock the legs back by it selves. The hopper makes jump about 6 inches and has landed by coking legs back and it has the ability to repeats that process several times. Each hopping cycle is about 4 seconds. The biggest accomplishing was to make it jump and land safely.
Here the group has provided a video of the way how the legs will work.
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