![]() ![]() Therefore, it is widely used in numerical control systems, automatic production lines, automatic instruments, plotters, and computer peripherals. The stepping motor has the characteristics of convenient control and small size. The actual measurement shows that the stepping motor drive system designed by this method has the characteristics of simple hardware structure, easy software programming, and low price.Ī stepping motor is a precision actuator that converts electrical pulse signals into angular displacement or linear displacement. This blog gives the control schematic diagram. At the same time, combined with the AT89C52 single-chip microcomputer, a simple method of driving a stepper motor is introduced. They are used in machine tool numerical control and used for tape players, discs, printers, and electric watches.The performance and structure of the stepper motor driver chip L297 / L298 are analyzed. Since the stepper motor is controlled digitally using an input pulse, it can be run on computer-controlled systems. These outputs are supplied to transistors to operate the stepper motor better. (1 + 2 + 4) Pins are strong in binary counters Q0, Q1, and Q2. This is equivalent to a binary counter, except the count is decimal, i.e., 1 2 3 4 - 9, so only Q6 pins would be high if the count is 7. If the count for events is 2, then the counter pin Q1 becomes high, and the count pin Q5 is high if 6 is counted. ![]() The binary counter now counts the number of pulses fed at the clock and makes a high pin output for the respective pin. ![]() And then, the frequency decreases if the pot is changed to boost the branch resistance.ĭECADE BINARY counter is supplied with the clock created by the 555 timer IC. Thus the increase in R2 causes a reduction in frequency. You can see that the frequency is inversely related to R2, which is 1 K+220 K POT in the circuit. In the figure, the important thing is only the third formula. ![]()
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