Let’s create a circuit to control the servo motor. The servo motor we will be using today can control the angle from 0 to 180. What Is a Servo Motor?Ī servo motor is like the other motors we’ve used before with an additional circuit that controls angles. If we use a DC motor, can we make it turn by 30 degrees to the right? Maybe we should rotate the motor for just a little bit and move the motor 30 degrees? Sounds pretty difficult. Let’s think about mounting the steering to make the car turn left and right. We can use the same idea to make the RC car go forward and backward. In the circuit in figure 2 (see article “ Use Arduino to Control a Motor Part 2“), we can rotate and reverse the motor by outputting signals from Arduino #9 and #10, one after the other. We went over forward/backward motor movement in the article “Use Arduino to Control a Motor Part 2”. Going forward and backward using a motor driver First, we will design the heart of an RC car, the circuit for “Basic movements are forward, backward, and steering mount.” Today, we will learn about many new concepts. > If we use infrared or XBEE wireless module, it may be possible, but it will be quite difficult. Let’s think about making the battery small too. > The Arduino UNO is pretty big to begin with, so maybe we should use a different Arduino. > We can use LEGO blocks, so that it will be easily to modify it. > We need 2 motors, one for going forward and backward, and one for the steering. Now, let’s see what kind of technology we need to use to make these things possible… Basic movements are forward, backward, and steering mount.Deciding the Specs of the RC Carīefore we get started, let’s decide the overall specs for the RC car. We will go over how all these parts work and how to customize them using actual demonstrations. In other words, if you fulfill these functions, you can call it an RC car. Today, we will try to make the basic parts of an RC car by ourselves and study basics about electronic circuits, steering, and engine movements.įigure 1: Structure of a radio-controlled carįigure 1 shows a rough breakdown of the functions found in an RC car. Today Electronic’s RecipeĪrduino Pro mini (Arduino Pro Mini 328 5V 16MHz)īox for AA batteries (series circuit for 4) Just like when we made the Stevenson Screen, we will decide the specs of the radio-controlled car before getting started. Today, we will look at the motor driver in more detail and make our own radio-controlled car using a motor driver. In the article “ Use Arduino to Control a Motor Part 2“, we went over how to use a motor driver.
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