Motor Control Circuits
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A relatively High power H-bridge motor controller (which is the most common way to control DC motors) With cheap TIP transistors. 5 Amperes of continuous current through an H-bridge module may not seen high power to someof you, depending on your field and.... -
In our first program, we will simply sweep the servomotor from CCW to CW and then sweep back. The program will be kept simple as to demonstrate the priniciples of controlling a servo with a the PIC Basic language. The schematic can be seen in figure 2.... -
I have a small scroll saw i would like to build a cheap speed controler for It uses an AC motor which appears to be brushless when i dismantled it C.... -
To control the motor, i will be using an H-bridge with a DPDT relay like you can see on this schematic below. If you want more details, look on this.... -
Reverse the DC power connections on such a motor and its shaft will rotate in the opposite direction. One way to control direction is to use switches arranged in the following manner: This configuration is called an H-Bridge due to its shape. Let`s say that.... -
In single phase AC induction motors, often used in fridges and washing machines, a start winding is used during the starting phase. When the motor has reached a certain speed, this winding is turned off again. The start winding is slightly out of phase to.... -
Stepper motors are available in several versions and sizes with a variety of operating voltages. The advantage of this general-purpose controller is that is can be used with a wide range of operating voltages, from approximately 5 V to 18 V. It can drive the.... -
Here are two simple 12V DC motor speed controllers that can be built for just a few dollars. They exploit the fact that the rotational speed of a DC motor is directly proportional to the mean value of its supply voltage. The first circuit shows how variable.... -
We used buffer IC`s (7417, 7414) to isolate the signals to and from the Arduino. This protected the board, and provided power for external devices without drawing it from the Arduino. An H-bridge can be thought of in much the same way. It is the interface.... -
One of the simplest ways to get a motor to turn in both directions is by using a double-pole, double-throw (DPDT) relay. Along with the relay, this hookup requires two transistors and two Stamp pins, one for on/off control and the other for direction.... -
Open Loop Speed Control of a DC Motor via 8255 Digital I/O Controller chip using TCP/IP Server-Client Application Programmed in Visual Basic. The 8bit DAC0832 chip is used as the Digital to Analog Converter. In this project open loop control of a DC motor.... -
I have a NOS lathe with NO history. Period. I think it was maybe purpose-built. In any case, I mention it because there is really no "tech-support.... -
The schematic for controlling the motors is split up into three main parts, with each part having a unique functionality. The main parts used and seen in the schematic below are the 18F252, SN754410 and 2N2222 Transistors. Seen at the very top, the.... -
The schematic seen below uses all the hardware components we`ve seen up to this point. If you`re following along with this tutorial be sure to follow it exactly as seen below. If you don`t have 220k resistor use the closest value you can find near it,.... -
An issue with CPLD and FPGA devices is that they have so many I/O pins that their schematics become overwhemlingly HUGE very quickly. I tried my best to partition out different sections of the schematic to show the motor control circuit, a-to-d converter....
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The 10A H-Bridge Motor Controller circuit looks simple but there are some key points that you don`t want to miss. The main devices used in the circuit are the TIP147, TIP142 and 2n2222. The power circuit is the +12v coming in from the terminal block....
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Although we`ll be using the Olimex P-40 development board, you can also breadboard out the circuit as it is very simple. The schematic for our first pass at controlling a servo is shown below. Servos can start to sink alot of current like any motors so it is.... -
The simple motor optical encoder circuit is not terribly difficult however it will take some double checking to make sure you have everything hooked up properly before working the first time. The main devices used in the circuit are the 7805, 18F4520 and.... -
The SN754410 Dual Motor Control circuit can be seen below. It is just about as simple as it looks with the PIC being the central processor. The main parts used and seen in the schematic below are the 7805, 18F452 and SN754410. The LM7805 +5v Regulator is....
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This circuit is not fun to look at nor is it fun to implement, it takes a bit of effort. Since there are two coils in our stepper motor we`ll use two LMD18245`s to control the current flow through the coils. It is important to note that there are motor.... -
The schematic for the transmitter in this project has 4 main parts, the Arduino UNO, the sharp IR distance sensor, the XBee Wireless Modules and the 16x2 LCD. You can see how these parts are connected together to build the system we want in the schematic.... -
There are two schematics that we`ll look at to see how to build this transmitter/receiver system. The first one is the transmitter, with a variable trimpot input into RA0. The trimpot value will be sent out of the Tx pin of the PIC and to the Din pin of the.... -
The problem is how to control the speed of the motor. One way is to use the plane, radio, and speed control with the motor in it. That`s no fun! Mount the motor on the bench and just plug the batteryinto the motor. That`s even worse! It`s hard on the motor.... -
According electronic schematic of DC driver motor using L293D in figure 2, we can use it to control two DC motor continuously. We can control DC motor one to rotate clock wise and DC motor two to rotate anti clock wise. We also can control all motor to....
New Circuits
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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.....
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