L293e

[moonstreat]

hello! I'm riding a car, and wanted to use this IC L293E, to make the rotation of the engines!

though, I tou somewhat difficult to understand the circuit below ...

**broken link removed**

I do not know where to connect the pins 2,9,12 and 19. . .

tabem not know what the voltage to pin 10. . .

Thank you for your answers!

 

[ericgibbs]

hello! I'm riding a car, and wanted to use this IC L293E, to make the rotation of the engines!

though, I tou somewhat difficult to understand the circuit below ...


I do not know where to connect the pins 2,9,12 and 19. . . These pins to the MCU or PIC drive pins

tabem not know what the voltage to pin 10. . .This the voltage that the motor requires.

Thank you for your answers!

Hi,
Does this help.?

 

[moonstreat]

I will not use PIC, in this case I can leave these pins (2,9,12 and 19) without any connection?

 

[ericgibbs]

I will not use PIC, in this case I can leave these pins (2,9,12 and 19) without any connection?

hi,
The LM293 requires the correct pattern of signals on those pins in order drive the motor forward and reverse.
How do you plan to create the required signals.?

What type of motor do you have.?

 

[moonstreat]

Through signs of a manual command when I click the pressure, this gives signal to the L293, and a motor walks.

 

[moonstreat]

my goal is to build a car with wires, through a remote control with buttons, all manual

 

[ericgibbs]

my goal is to build a car with wires, through a remote control with buttons, all manual

What type of motor do you have.?

 

[moonstreat]

is an engine C.C. 12V + / - 250mA

 

[Hero999]

The schematic you've shown is for a stepper motor. You can't just give it one signal to go forwards and another to reverse. The coils need to be pulsed in the correct sequence, otherwise it won't work.

 

[moonstreat]

does this work?

**broken link removed**

 

[Hero999]

I don't know because it depends on the type of motor you're using which you haven't mentioned.

 

[moonstreat]

then, but these only serve to CI engines step?!

 

[Hero999]

Until you tell us what type of motor you're using i.e. stepper, permanent magnet DC, then we cannot help you.

 

[moonstreat]

is a DC motor permanent magnet

 

[Hero999]

Finally.

Then it's as simple as reversing the connections to the motor, there are some examples on the datasheet.

See Figure 5.
https://www.electro-tech-online.com/custompdfs/2010/02/l293d.pdf

 

[moonstreat]

Hero999, very, thank you!

I think that is all I precizē!

 

[moonstreat]

pins 2,7,10 and 15 bind to the PIC? or can give an electrical signal?

 

[Hero999]

1) What does precizē mean?

2) Look at the truth table posted in my previous attachemt.

 

[moonstreat]

1) means: need


2) Yes I looked! but I'm pebble! xD which means the letters H, L and X. ..

so I need to know where to connect the pins: 2,7,10 and 15

 

[Hero999]

High means Vcc1.
Low is 0V

Don't care means it doesn't make any difference whether the signal is high or low.

The pin numbers are clearly shown on the diagram