I am new to circuits and electronics. I am creating my first project on embedded systems. The project is "Three-wheel car robot with motors," and I connected three lithium-ion batteries with the motor driver. The issue was when I was working on the circuit, connected the batteries, and soon I noticed the high temperature of the battery holders and smoke from the words. I think I have added more than the required batteries in the project, or the polarities were not right. I used the series connection of batteries. What may be the other issue? I have attached the battery connection in the attachment. Is there anyone here who can discuss all the points about this project?
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No one has commented on the post, so I just want to clarify I am creating the line-following robot (three wheeler) and following the tutorial https://www.theengineeringprojects.com/2016/09/line-following-robot-using-arduino.html. The issue is, I connected the batteries and stuck in the hardware part where my batteries are not working. I have designed straightforward circuits before so I am afraid I have damaged the ESP32 or batteries.
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