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DC motor driver using L293d

4 years ago 1941
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Description

his project is a DC motor driver, suitable for motors of low or medium power. Allows controlling up to 6 motors or 3 motors if you want to control the rotation of the motors.

Description The controller is build around the IC L293D that can provide 600mA per channel, and a H-Bridge designed with transistors NPN and PNP transistors, than can provide 1.15A per channel.

The controller has the following connections:

INPUTS (A, B, C, D ,E, F). These are receiving the analog or digital signals that can be sent for example, from a microcontroller.

ENABLE (E1-2, E3-4). These activate the inputs from the L293D. The supply voltage can’t be higher than 7V.

OUTPUTS (+M1, -M1, +M2, -M2, +M3, -M3). Here is where the motors should be connected.

+9-12V. Here’s where is connected a supply voltage that will give power to the motors. This input, gives voltage in the L293D and the H-Bridge, the supplied voltage have to be 36V max, but for the H-Bridge it’s recommendable to use 24V max. (In case you want to use only the L293D, you can remove the jumper).

+5V. This input receive the logic supply voltage for the L293D. You can connect a supply voltage higher than 5V because this input it’s connected to a voltage regulator (LM7805), but you not must to exceed 30V. From: http://www.electronics-lab.com/project/dc-motor-driver-using-l293d/

Documents

DC MOTOR DRIVER

DC MOTOR DRIVER USING L293D

BOM

ID Name Designator Footprint Quantity
1 L293D IC1 DIL16 1
2 LM7805 R TO220V 1
3 BC327* Q1,Q2 TO92-EBC 2
4 2N2222 T1,T2 TO18 2
5 TIP41C Q3,Q4 TO-220 2
6 220 R1,R2 02047 2
7 270 R3,R4 02047 2
8 PINHD-1X2 JUMPER 1X02 1
9 LED LED1,LED2 LED3MM 2
10 220 R5 02045 1
11 1k R6 02045 1
12 SIP2 P1,P2,P3,P4,P5,P6,P7,P9 SCREWTERMINAL-5MM-2 8
13 SIP1 P8,P10 HDR1X1 2

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