The TinyG project is a high performance, USB based CNC 6-axis controller that supports XYZ linear and ABC rotary axes with 4 motor outputs. It is designed for small CNC applications and other applications that require highly controllable motion control. TinyG is meant to be a complete embedded solution for small or medium motor control. Full, integrated motion control system with embedded microcontroller (Atmel ATxmega192) and 4 stepper motor drivers (TI DRV8811) integrated on a ~4 inch square board Accepts Gcode from USB port and interprets it locally on the board 6-axis control (XYZ + ABC rotary axes) Acceleration planning performed using constant jerk motion equations (3rd order S curves) for very smooth and fast motion transitions for lines and arcs Very smooth step pulse generation using phase-optimized, smart oversampling, fractional step DDA running at 50 Khz with very low jitter (<<1uSec) Networkable via RS485 to support motion peripherals and for networking mutliple boards for multi-axis systems and for really interesting projects (up to 1000 stepper axes)

Stepper drivers handle 2.5 amps per winding which will handle most motors up thru NEMA23 and some NEMA34 motors. Micro-stepping up to 1/8 (optimized DDA makes this smoother than many 1/16 implementations) Various techniques can be used to control the speed of an AC or DC motor, such as using the phase-locked-loop principles, digital inputs, or analog inputs. As we have already published the project “Digital  DC motor Speed controller” controls the speed of motor by using of digital input, and “electronics motor control” used to control AC motor. Now, its time to build stepper motor control system. The project stepper motor control illustrates the use of microcontroller and switching circuit to control the speed of stepper motor. This project control the axial rotation in XY plane and to control the rotation of the motor in either XZ or YZ plane similar circuit can be added. The block diagram of stepper motor control using microcontroller AT89C51 is shown in figure 1.

The circuit of stepper motor control system is designed using microcontroller and switching circuit. The power supply is given by pressing switch SW1 which further step down by step down transformer to 7.5V and rectified by bridge rectifier made from diode D1 through D4. ac unit btu chartThe rectified output is further filtered by capacitor C1 and given to pin 1 (input) pin of voltage regulator IC (IC1). car air conditioning repairs noosaThe regulated output of 5V is obtained at its output pin 3. window ac unit freonPower on-reset is provided by capacitor C3 to the microcontroller connected to pin 9 and across switch SW2. As we know the stepper motor has four different coils so four motor driver circuits is needed. Each motor driver circuit is build from two NPN transistors (i.e. BC548 and SL100) and configured as darlington pair.

The four darlington pair is connected to pin 28 through 25 (i.e. P2.4 through P2.7) as shown in circuit diagram figure 2. A magnetic field is created around coil when transistors start conduction and as a result motor start to rotate. But when transistor stop conduction a reverse voltage (more than 100V) is produced because of magnetic field energy stored in coil is collapsed which is absorbed by diode connected across the coil. A crystal of 11.019 MHz is connected to pin 18 and 19 with capacitors C4 and C5 as shown in circuit diagram, which is response for the clock frequency of microcontroller. The speed of stepper motor is directly proportional to frequency of the input pulses. Formula for calculation time taken by any instruction to get executed is Where C = number of cycle And f = crystal frequency Program:- The source code of “Stepper Motor Control Using Microcontroller AT89C51” is written in assembly language. Click here to download source code.

Resistors (all ¼-watt, ± 5% Carbon) R1 = 100 Ω R2 = 100 KΩ R3, R5, R7, R9 = 1 KΩ R4, R6, R8, R10, R11 = 470 Ω C1 = 220 µF/25V C2 = 100 µF/16V C3 = 10 µF/16V C4, C5 = 33 pF C6 = 100 µF/16V IC1 = 7805 (5V regulator) IC2 = AT89C51 (Microcontroller) T1, T3, T5, T7 = BC548 (NPN transistor) T2, T4, T6, T8 = SL100 (NPN transistor) D1 – D8 = 1N4001 (rectifier diode) LED1 = RED LED (5mm dia.) X1 = 230V/50Hz or 100V/60Hz primary to 0-7.5V, 1A sec. step down transformer SW1, SW3 = on/off switch Sw2 = push to on switch = 5V DC stepper motorThe page you are looking for might have been removed, had its name changed or is temporarily unavailable. Please try the following: Make sure that the Web site address displayed in the address bar of your browser is spelled and formatted correctly Use our search engine to find the information you are looking for If you reached this place by clicking a link, contact the web site administrator to alert them that the link is not working properly

Click the back button to try another link Do you still have problems with our website? Our Support Center will be happy to assist you: You could also try the link to our homepage: Sold by DROK and Fulfilled by Amazon. A Full Selection of Industrial Electrical Supplies DROK® L298N Motor Drive Controller Board DC Dual H-Bridge Robot Stepper Motor Control & Drives Module for Arduino Smart Car Power UNO MEGA R3 Mega2560 Duemilanove Nano RobotDetailsEmgreat® Motor Robot Car Chassis Kit with Speed Encoder wheels and Battery Box FREE Shipping on orders over $49. DetailsAndoer Speed Measuring Module Encoding Disk Set for Smart Car Chassis Save 15% on 2 Sets Stepper Motor when you purchase 1 or more L298N Motor Drive Controller offered by DROK. Enter code BB4B5QYV at checkout. Save 10% each on B00CAG6GX2 offered by DROK when you purchase 2 or more. Enter code B5AT9HR4 at checkout. 4.6 x 3 x 1 inches 4.2 out of 5 stars #1,356 in Automotive (See top 100)

#3 in Industrial & Scientific > Industrial Electrical > Controls & Indicators > Controllers > Motor Speed Controllers 0.3 ounces (View shipping rates and policies) Parameter: Chip: L298N Logic voltage: 5V Logic current 0mA-36mA Storage Temperature: -20 ℃ to ℃ to +135 Operating mode: H-bridge driver (dual) Drive voltage: 5V-35V Drive current: 2A (MAX single bridge) Maximum power: 25W Dimensions: 43x43x27mm Product features: 1.L298N as main driver chip makes strong driving ability/small heating/strong anti-interference 2.Use large-capacity filter capacitors and diode with freewheeling protection function, increasing reliability 3.This moduel integrated with one internal 5V power supply, meaning when your driving voltage is 7V-35V,it makes 5V of energy board power supply logically; when 5V of energy board power on, please not input voltage to +5V power supply in interface but you can lead 5V voltage for external usage Eg: ENA enable IN1 IN2 to control OUT1 OUT2 ENB enable IN3 IN4 to control OUT3 OUT4 Package includes: 1x L298N Module