1. LM298 has 15 pins. A and B (corresponding to pin 11) are the ports that control the control signal, that is, the enable end. L298 has 4 signal input and output ports, A and B control two, only when A is high power signal input port 2 (corresponding to pin 7) input signal can effectively control the motor through the signal output port (pin 3) output. The same is true for port BReason.
2. Yes. Drivers and driver boards, driver chips are interchangeable. The premise is that the power must match the motor. M298n itself is a stepper motor drive, through a simple peripheral circuit can drive the motor, but this chip is used with the LM297, if you want to use this material alone, but also write your own program.
3, ULN2003 Lm298 TA8435 TB6560 These can meet your 2-phase 4-wire motor.
4, see how much drive the motor, if the motoristChannel A enabled) The motor is connected to OUT1 and OUT2 output outlets. The third step is to enable the GND and VCC on the control board to the power supply GND and on-board 5V on the L298N driver module respectively. Step four, enter the code. Step 5, enter the second part of the code, done.
2, the L298N physical wiring diagram enables the termination of the MCU as shown in the figure. First, the VMS driver part can be connected to an external power supply, generally about 12V is more appropriate, the logical part can be connected to the board, that is, the terminal can be suspended, or it can be connected to 5V-7V. Three pins in the left and right rows of terminals are used to control two DC channels respectivelyAn electric motor.
3, l298n wiring method: First of all, the VMS driver part can be connected to the external power supply, generally about 12V is more suitable, the logical part can be connected to the board, that is, the terminal can be suspended, but also can be connected to 5V-7V. Three pins in the left and right rows of terminals are used to control two DC motors respectively.
4, ENA and ENB can be inserted, but did not find the right position, wiring see the second picture, to connect the on-board 5V only connected to a motor, the number 4 pin connected to the L298 module IN1 and IN2 (logic input) pins, 10 connect to the ENA pin (channel)A Enable). Connect the motor to the OUT1 and OUT2 output exits, and enable the GND and VCC on the control board to the power supply GND and on-board 5V on the L298N drive module respectively.
5, SCM or Raspberry PI generally use the L298n module to drive the motor. A physical image of the L298N is shown below. 12V power: L298n power supply positive, although the mark 12V, but you can use 7V ~ 35V power supply. GND: L298n power supply, the Raspberry PI GND pin should also be connected here, that is, L298N and Raspberry PI need to share land.
1, DF-MD V3 high power DC motor driver using LGS company excellent high power motor special drive chip L298Nl298n chip pin diagram , can directly drive DC motor, drive current up to 2A. The circuit has reasonable wiring, small size, convenient installation and high output endSpeed Schottky diode as protection.
2, L298N is SGS l298n chip pin diagram products, internal contains 4 channel logic driver circuit. Is a two-phase and four-phase motor l298n chip pin figure dedicated driver, that is, contains two H bridge of high voltage and high current double full bridge driver, receive standard TTL logic level signal, can drive 46V, 2A below the motor.
3, device model L298N manufacturer STMiAs can be seen from the above parameters, the matching Motor rated current is about 2A, not more than 3A, and the rated voltage is below 46V.
4, L298 is two sets of full bridge driver chip, input logic signal, output can be connected to relay, solenoid valve, DC or stepper motor, drive voltage maximum 46V, current 4A, logic voltage maximum 7V, N indicates that it is a 15-pin upright Multiwatt package, CZ and the number after it is the manufacturer's production mark.Just ignore it.
1, you use a multimeter to measure the L298N input port to the ground resistance, if it is small, there may be a problem with the chip itself. 51 MCU IO port except P0 are internal weak pull-up mode, pull current ability is very poor, alsoAbout 1mA, the ordinary 51 microcontroller does not have a push-pull mode, and the enhanced type such as the STC12 series has a push-pull mode pull current capacity is said to reach 20mA.
2, first determine whether the output of the MCU is high, and then determine whether the pin of L298 is correct and whether it is powered on. And then determine if L298 is damaged.
3, if it is still only about 2V, it proves that there are some internal circuits such as on-chip voltage regulation inside the MCU or L298 caused by partial voltage. Or is there some circuit that you connected to the outside to pin it outIt should be a wire to connect the IN port of L298, do not connect other things. If the above can not solve the problem, it is recommended to change the chip.
4, the output is not high, generally speaking, the working mode of the pin is not set. To output high levels, the pin needs to be set to push-pull output mode. Or set to open output mode, externally connected to the pull resistor. The situation you are talking about is likely that there is a pull resistance on the development board, and your own circuit does not have a pull up resistance. Crystal vibration Crystal vibration is vibration.
5, I burn this program to the single chip microcomputer, p2p3All are low, and the other I/O ports are of course high. Because the MCU default pin output high level. Maybe you missed that. Excuse me. I'm confused about your question. I don't know whether to ask up or down.
6, MCU signal changes too fast, it is not easy to measure. You can put IN1 high, IN2, IN3, IN4 on the ground, and test the 298 output to see if the output pin 1 has voltage and the other pin has no voltage. Give it a try.