Product description
Module interface description
1.VM: the power supply of the drive module, according to the parameter input of the motor, the measured range is 7.6~40V
2.VCC: Use 5V input, do not enter 3.3V, otherwise the performance will be affected.
(in the case of 3 pins connected) Task 1:A motor is turning forward, duty cycle 50%
Scheme: The two lines of motor A are connected to AOUT1/AOUT2 respectively.AIN1 is connected to low level, and AIN2 is connected to 50% PWM
Task 2: Motor B is reversed with a duty cycle of 20% Solution: The two wires of motor B are connected to BOUT1/BOUT2 respectively.BIN1 is connected to a high level, and BIN2 is connected to a 20% PWM
(If you have a high PWM frequency, such as 10KHZ, you need two PWM pins to control the forward and reverse rotation, and if you use the Arduino, the default frequency is 500HZ PWM. You can use one I0 and one PWM pin to control forward and reverse rotation, but the effect is not as good as two PWM pins)
When the product is placed, because the individual height of the welded components is protruding, no other heavy objects are pressed on it to prevent the patch components on the circuit board from being damaged and affecting the performance of the board:
Circuit board storage temperature should not exceed 55 "humidity is less than 60%;
Do not place the board near the humid place to prevent the board from being affected by moisture. If the board is affected by moisture, please dry the board in a ventilated dry place, such as air conditioning, using the hot air of air conditioning to dry;
Since the pin of the board is bare design, do not touch the relevant pin with your hand to prevent static electricity from damaging the chip pin and affecting the performance of the board. Before using the circuit board, it is necessary to check whether the connected power supply is within the range specified in the manual to prevent the voltage from being too high to breakdown the key chip and affect the performance of the board: when the circuit board is used, be careful not to reverse the power supply.
Function: It can control the positive and negative rotation of two motors (for example, the balance car only needs one
Current: Module with current limiting protection, 2A(overcurrent will not power off, will only limit the most
Control: 4 PWM pins are required. (If inversion is not required, only 2 PWM pins are required.) Much easier to use than L298, provide instruction manual.
Lead out :2 rows of 7Pin rows,