Deadlift - 1.5Kg Beetleweight Combat Robot

thingiverse

Human: Say hello to Deadlift, a 270 degree beetleweight lifter bot for the UK! Features: Deadlift is built around a highly mobile lifter arm, powered by two servos and capable of up to 3/4 rotation if needed. The lifter arm, once a steel lip has been added, scrapes the floor effectively at a shallow angle, hoisting opponents up and away or on top of the robot. Unlike most lifters, it is also just as effective when inverted! Deadlift has multiple design considerations to make it more beginner friendly, including supported drive motors, angled rear armour for better deflection and small frontal wheelguards allowing opponents to slip off. The front wedge, improved by adding steel, has a relatively aggressive angle to protect the arm and keep opponents ahead of the robot rather than to its sides. On top of all this, the bot is printable in three steps and can be printed on the vast majority of printers including the Ender 3! The basics: Deadlift is designed to use standard parts and be a basis for people to work from to create better bots. 3D printed bots are often not very competitive at this class but that doesn't mean they can't still be used! This project contains all the files you need to print a combat ready robot chassis with lifting arm. I highly recommend adding bolt on steel or titanium armour, particularly to the front and lifter arm, as it will struggle in combat without it. Deadlift, like all my bots, is designed for standard parts and has wiggle room for whatever electronics you want to put in, but I've made some recommendations in the Bill Of Materials below. Important notes: - There are four versions of this bot: the normal one, normal one with holes, shortened one and shortened with holes. Cura sometimes will not accept the normal version as fitting inside an Ender 3 bed, but should accept the smaller version without difficulty. - This is a unibody bot, it's going to take a long time to print as a result! I recommend ABS, HIPS, PETG or Nylon materials, in that order. - Deadlift's default servos, available off Ebay, are 180 degree servos. - The design has been optimised to be as strong as possible, but be careful when modifying that some walls are quite thin. - There is now allowance for fixtures! The current version is built for 15mm M4 bolts and M4 heatset inserts. I'll add more provision if requested. Please note that this design will continue to evolve and change as time goes on. A more Ender 3 compatible version is in the works, for example. BOM: 1x Chassis 1x Lifter arm 1x Lid 2x Motor Mounts (I always recommend you make these from aluminium, ideally 2mm 6061) 2x Tower Pro MG996R servos, available on Ebay. Most 13kg 180` servos will work however 2x 25mm Gearmotor (500-700Rpm is ideal) 2x Drive ESC 1x Radio setup (Tx/Rx) 1x 5mm LED 1x LiPo battery (Recommended 3S, 650MaH, you'll want two though for events) 2x BEC (To power your servos) 12x M4 Heatset brass inserts 12x M4 15mm bolts Basic build details: - The servos mount to the blocks at the front, either side of the lifter. Use their circular horns for the best results. - The LED can simply be hot glued into place in the rear mounting hole. - The slot in the lid is for an XT60 removable link, though an XT30 works too! - This robot only needs 18-22 AWG wiring. - Make sure you use 15mm bolts for the top plate! Any longer and you'll rip out the insert. - The front wedge has holes to allow through-bolts rather than inserts to fasten metal plates if you want it. This will be stronger, but would require a separate set of fasteners