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

thingiverse

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 <h3>Change Log</h3> - 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) <h3>Build Instructions - Rear Piece</h3> Parts to print: - MainStructure.stl - MotorBase.stl - MotorHolder.stl (x2) - Standoffs_27mm (x4) - Standoffs_20mm (x4) - Standoffs_14mm (x4) - Standoffs_10mm (x6).. <i>Use these when mounting the battery from the bottom</i> 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 (<a href="https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313.TR0.TRC0.H0.XDIY+3-Slot+18650+Battery+Holder+With+Pins.TRS0&_nkw=DIY+3-Slot+18650+Battery+Holder+With+Pins&_sacat=0">ebay</a>) - 3M x 9mm self tapper screws (+- 6) - Dual axis gear motor (x2) Videos: - <a href="https://youtu.be/Np0o02Xr6kI">Mounting the Microcontroller</a> - <a href="https://youtu.be/2crSmJUiY-0">Mounting Motors</a> - <a href="https://youtu.be/6P9_lscI1IQ">Mounting Motors - continued</a> - <a href="https://youtu.be/gcmUkBtkJks">Mounting both Microcontroller n Motors</a> - <a href="https://youtu.be/IGTj4tjRYTk">Mounting Battery Pack</a> <h3>Build Instructions - Front Piece</h3> 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) <a href="https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313.TR0.TRC0.H0.X687zz.TRS0&_nkw=687zz&_sacat=0"> ebay</a> - 2 x 608zz or f608zz bearings (8 x 22 x 7mm) <a href="https://www.ebay.com/sch/i.html?_odkw=687zz&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.H0.X608zz+bearings.TRS0&_nkw=608zz+bearings&_sacat=0">ebay</a> - 9g Servo <a href="https://www.ebay.com/sch/i.html?_odkw=608zz+bearings&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.H0.X9g+servo.TRS0&_nkw=9g+servo&_sacat=0">ebay</a> - 3M x 9mm self tapper screws (+- 10) Videos - <a href="https://youtu.be/uS-cON0XzTY">Building Front Structure</a> <h3>Build Instructions - Servo Bottom Mount (Optional)</h3> Parts to print: - SteeringRod(Updated) - ServoHolder - Standoffs_11mm (x4) - FrontStructure (Updated) Parts to buy: - 4x 3M 25mm bolts and nuts Videos: - <a href="https://youtu.be/u9IzG3mg8q8"> Steering Servo - Alternate Mount - Intro</a> - <a href="https://youtu.be/jQucAe7Xm5Q"> Steering Servo - Alternate Mount - Cont</a> - <a href="https://youtu.be/HJM_31ZcjwU"> Steering Servo - Alternate Mount - Testing</a> - <a href="https://youtu.be/FtpOk8uOVto"> Steering Servo - Alternate Mount - First Run</a>