4WD RC Smart Car Chassis for Arduino (or ESP)

This is a work in progress project I started 3 weeks ago. The chassis is now complete and operational. Feel free to start building it. There might be trivial updates to come. Look out for: 1) Videos showing the build step by step 2) Sonar capabilities 3) Line tracking capabilities

Change Log

- 2017/10/08 - Initial upload - 2017/10/14 - Uploaded some instruction videos - 2017/10/23 - Included an option to mount the servo from the bottom (cleaner) - 2017/10/24 - Uploaded design source files (OpenSCAD)

Build Instructions - Rear Piece

Parts to print: - MainStructure.stl - MotorBase.stl - MotorHolder.stl (x2) - Standoffs_27mm (x4) - Standoffs_20mm (x4) - Standoffs_14mm (x4) - Standoffs_10mm (x6).. Use these when mounting the battery from the bottom Parts to buy: - 3M x 40mm bolts and nuts (+-20) - 3M x 25mm bolts and nuts (+-3) - DIY 3-Slot 18650 Battery Holder With Pins (ebay) - 3M x 9mm self tapper screws (+- 6) - Dual axis gear motor (x2) Videos: - Mounting the Microcontroller - Mounting Motors - Mounting Motors - continued - Mounting both Microcontroller n Motors - Mounting Battery Pack

Build Instructions - Front Piece

Parts to print: - FrontStructure.stl - FrontWheelArm.stl (x2) - FrontWheelArmLid.stl (x2) - Standoffs_32mm (x4) Parts to buy: - 4 x 687zz bearings (7 x 14 x 5mm) ebay - 2 x 608zz or f608zz bearings (8 x 22 x 7mm) ebay - 9g Servo ebay - 3M x 9mm self tapper screws (+- 10) Videos - Building Front Structure

Build Instructions - Servo Bottom Mount (Optional)

Parts to print: - SteeringRod(Updated) - ServoHolder - Standoffs_11mm (x4) - FrontStructure (Updated) Parts to buy: - 4x 3M 25mm bolts and nuts Videos: - Steering Servo - Alternate Mount - Intro - Steering Servo - Alternate Mount - Cont - Steering Servo - Alternate Mount - Testing - Steering Servo - Alternate Mount - First Run