Breadboard connection with 12v battery

[flobaj]

Hello everyone, I need to make a line follower robot. I have already made the robot by powering my breadboard with a 9V battery. But in order to have more power, I am asked to power it with a 12V battery, knowing that on my breadboard I have an L293D to power my two motors and that I would like to add a potentiometer to control the voltage which I put on my breadboard. Do you have any idea of ​​the connection made, because I tried with the same connection as the 9V battery but I failed.
Thanks in advance

[UKHeliBob]

You started a topic in the Uncategorised category of the forum

Your topic has been moved to a relevant category. Please be careful in future when deciding where to start new topics

[johnerrington]

How to make a schematic you can post.

When you submit a question on the forum you will usually need to add a schematic (circuit diagram). The tutorial that follows will explain some ways to create a useful image; however lets start by explaining how to add the image to your post. Its easy. Having created the image all you need to do is : Save the image somewhere convenient - maybe your desktop Start your post, and place the cursor (insertion point) where you want the image to be shown; [upload image to forum] 3: click th…

[build_1971]

A potentiometer is not a good way to set the voltage of a motor driver. Maybe it can be done with a poteniometer and a darlington emitter follower.
But question number 1 is: why???
12V is perfect for L293D...

[b707]

@flobaj

I tried with the same connection as the 9V battery but I failed.

Start from showing that connection