150g Grab and Lift Battlebot

thingiverse

Grab and Lift Robot: A 150g Combat Robot Design This robot is a simple build that requires minimal extra tools, making it an ideal project for beginners. The .STEP file is attached for those who want to modify or edit the design. This robot is designed for nondestructive combat against other robots, using flippers, hammers, and wedges. However, you will need to make some modifications to use it in full combat mode, such as adding 0.5mm titanium wedges. Assembly Tricks: You can attach the flipper to the servo arm using a paper clip, cutting off any excess after bending it into shape. Alternatively, tapping the servo arm to accept an M2 bolt is a better option. The Lego hub has tolerances that make it easy to print with minimal effort, but you may need to use a tighter tolerance version if necessary. I recommend using #3 plastite for the top plate and wedge. Reference my PDF for clearance fit and thread specifications. **Hardware** * 3qty M3x12 * 1qty M3x8 * M3 assortment: https://amzn.to/2RwT0fH * 1qty M3x45: https://amzn.to/2wvFOQO * 1qty M2 x12: https://amzn.to/2V8CfZ7 * Small Zip Ties: https://amzn.to/2UQZYy8 * Paper Clip * Hot Glue/Superglue * 3-24 Plastite Screws: https://amzn.to/2AInL9z * Rubber Bands: https://amzn.to/2Xxrang * Wheels: Lego 24x14 Tire: https://amzn.to/2yLfDUd **Tools** * M2 Tap: https://amzn.to/2RhQ4TY * M3 Tap: https://amzn.to/3ei9vGg **Electronics** * Flipper Servo: KST DS315MG or KST DS215MG: https://alofthobbies.com/kst-ds315mg-servo-48kg-666-oz-in-07sec-high-voltage.html * Drive Motors: N20 Micro Gearmotor 12v 1000rpm: https://amzn.to/3eCAFYr * ESC: Endbots DESC: https://www.endbots.com/collections/products/products/endbots-desc?variant=5580585992221 * RX: Your choice, the Endbots DESC comes with a Spektrum receiver built in. * TX: Your choice, I use a Spektrum DX6: https://amzn.to/2qk8RQA * Battery: Nano-tech 300mah 2S Lipo Pack: https://hobbyking.com/en_us/turnigy-nano-tech-300mah-2s-45-90c-lipo-pack.html You can use other servos like the Corona DS929HV for a cheaper alternative, but you will need to adjust the linkages to get full travel as they often come with shorter servo arms. You can also buy specialized wheels to save weight if needed. Although Lego wheels work great and are much cheaper. SC-2110p ProComp: http://www.132slotcar.us/store/product_info.php?products_id=4523