Hello Team,
I want to connect Arduino Nano with L293D Motor Driver Shield to drive 4 DC motors at different speed for each motor.
While seeing the pins in L293D Motor Driver Shield, i could not identify the Enable pin, the IN1 and IN2 Pins. I understand it is easy to use the L293D with UNO. As i have space constraint, i want to use the Arduino Nano.
Please help to connect Arduino Nano with L293D Motor Driver Shield to drive 4 DC motors at different speed for each motor
Post a link to your exact shield. There are many different versions.
Please find the Link
You have a view on how the arduino pins are used to control the L293D
Extracted from https://5.imimg.com/data5/PX/UK/MY-1833510/l293d-based-arduino-motor-shield.pdf
Thanks for the input. Here I am getting the information of How the PWM pin connection required for 4 motors. However, I am still unclear about the IN1 and IN2 pin connections from Arduino to Motor Driver for the 4 Motors.
The chip in the middle of the board is a 74HC595 which is an 8 bit shift register. it lets you drive the 2 IN pins for each motor (4 motors = 8 IN pins - hence the 8 bit shift register)
To control the DC motors, use:
Then you need to use Pins 4 (clock), 7 (enable), 8 (data input), and 12 (latch) to control the shift register
if you are not familiar with shift register, you can read this post
if you look at this library, you'll see how they drive the shift register to set the correct 8 bits depending on what you want to do.
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