Arduino can drive many kinds of motors. But the low-power signals from Arduino need to control high-power circuits to run the actual motors. Here we will give examples of ways that Arduino can control different types of motors of different sizes. A Motor Driver will usually be a circuit board with several electronics components on it, including a
Click here to download the full size of the above Circuit.
high-power motor driver chip or some power transistors. (Examples Here:) Boards like this cost about $10 to $15 these days. Here`s an example of an Arduino "Shield" that plugs on top of an Arduino. This uses a motor driver chip L298N which we will detail more about later. Details of operation of the L298N Arduino Motor Driver Shield are HERE: This includes a heat sink for the L298N chip, allowing higher currents. It is also less expensive than a shield version. Often it can be mounted near the motors 2 DC Motors may be connected to the outputs on the right. Arduino controls the inputs so that the motor terminals are connected to Ground or Vcc (Motor Power Supply). So voltage can be applied in either direction through the motors, or both terminals can be connected to Ground to stop. Note the measures taken here to control "Back EMF" and "power supply noise" as mentioned in the tutorial (DC Motors). There are 8 diodes that are connected from the motor outputs to ground and the motor power supply. These are to limit or "snub" the back EMF voltages that otherwise would damage the chip. The diodes on the right side are LEDs that light up when the motors are powered and indicate what direction the current is flowing. There is also a +5 volt regulator chip (MC78M05) which supplies +5 volts to the L298N chip.
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
characters left: