Servo Steering Robot Car for Arduino

This car is based on the arduino platform design, the core is the Atmega - 328 p, which can realize the front wheel steering, rear wheel drive and other functions.If you just play alone, only need to use the wireless module;If you want to implement other functions, you may need to add other sensors or hardware.When you want to have a controlled by the steering gear to car,You need the following parts:PM - R3 module integrated I/O expansion and motor driveFirst we install the drive part, drive motor is JGA25-370, through a gear reduction drive axle and wheel forward retreat, the motor shaft gear is big, because after the drive shaft and support distance is small, can't install big gear, but overall still slow.Rear wheel bearings with flange bearings, to prevent the gear sliding down when running, you can also reduce power consumption.Before turning part adopts the design of the RC, also with most of the accessories, such as the wheel parts;In order to keep the wheels of flexible, both inside and outside the bearing with installation.MG996R metal as power steering, the steering gear with two L shaped bracket should be fixed to the chassis,Servo motor connecting rod when installation, please ensure the steering Angle are already owned by (1.5 ms), the switch to the scope of the convenient adjustment and in the late.Will be assembled to part and servo motor is fixed to the turf,Can't tighten the screw fixed to a cup, it will lead to can't turn, is likely to burn out the servo motor and single chip microcomputer;Using the connecting rod connects two front wheels, and connected to the servo motor on the rudder Angle;Servo motor is fixed with the M3 * 8 mm screw and nut, fixed with M2.5 * 8 mm screw to cup, copper column side is 2 M3 * 8 mm screw.Motor driven extension board can be used directly, and the mainboard without other wiring,just need to PS2 receiver and servo motor upon receiving the I/O port expansion board, the power input port in the VCC & GND expansion board, motor output in A and A -,another motor output in B and B-.So, we can control the two dc motors, here we only need one interface.Servo Pin : I/O 4PS2 did a transfer board, convenient wiring, reverse connect protection, recommend the following connection herePS2 Pin : Power input VIN & GND, 3-9 v voltage range.Through the modification of the program to achieve the robot's walking, motor control forward and back, servo control direction; program contains PS2 control, Bluetooth control and follow-line.The program should be changed to the latest version to match the new PM-R3.Old code see PS2_old

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