In the modern world, many hobbyists derive joy from the use of projectile-based platforms such as the crossbow and slingshot for target shooting or from building these platforms themselves. Historically, these ranged weapons saw use over countless centuries (7th century BCE in china) and in the 700s BCE in Greek Syracuse. The invention of the crossbow itself revolutionized battle strategy alongside many variations of it. While all these platforms brought their advantages, ergonomically, crossbows were notorious were for their difficulty to reload (see image of archer conducting a reload) and thus lacked the rapid repeatability of its precursor - the bow and arrow. As such, there is room to experiment with the automation of the firing and reloading process in a closed kinematic chain as this project presents an intriguing level of complexity and challenge in its completion.
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A brainstorm led to the concept of implementing a walking-beam mechanism to fulfill the firing process, and an adaptation of Lazy Susan to reload.
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Lazy Susan: As defined on Wikipedia, "A Lazy Susan is a turntable (rotating tray) placed on a table or countertop to aid in distributing food."( https://en.wikipedia.org/wiki/Lazy_Susan). See the animation below for a visual understanding. This working principleWidget Connector