in the fire fighting robot

Nitesh kumar's picture

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Joined: Apr 10, 2019

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in the fire fighting robot
April 10, 2019 - 5:59pm

i have used the L293D motor driver for the robot connections and used an 7.4V battery. the problem is , when the fire is sensed by the sensors the servo gets turn on ,but the water pump is not getting on. i had did all the steps as follow.

Violet's picture

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Joined: Aug 16, 2018

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Hi Nitesh, 
April 11, 2019 - 10:32am

Hi Nitesh, 

What servo motors are you using and why do you need a L293D module to drive a servo motor?

Also how have you connected the water pump? Is it also through L293D? Then check if the pump is getting the required voltage when the digital pin on arduino is made high. 

I am not sure which project you are refering to, because this 

https://circuitdigest.com/microcontroller-projects/arduino-fire-fighting-robot-code project here does not use a servo motor