Sometimes, like a lot of times, generally quite often, the SD card will be corrupted in our current setup and you will have to burn the SD Image again on the SD card. It is very important to remove one of the jumpers of the Motor Driver to avoid this.
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- #820
- 23 Mar 2018
TL. DR.
Remove Motor Driver jumper to avoid current flowing from the batteries to the driver and thus corrupting the SD card.
Why does it happen?
After you turn off the controller from the power-bank the batteries will continue powering the system and returning current back to the controller. This current is small - about 700mA-800mA and is not enough to power the controller properly. But it is enough to corrupt the SD card image and you will have to burn it again.
Picture of the driver
In the picture, you could see the bad boy highlighted. It should be removed.
Here is how it looks like after it is removed:
Courses and lessons with this Tutorial
This Tutorial is used in the following courses and lessons
Perfect STEM course. Module 1 - Smart Car with Raspberry PI
Disassemble a remote control car. Change the brain of the car with a smart computer like Raspberry Pi. Build a smart device with artificial intelligence that you could control from your phone and that could freely navigate itself in the real world and on the Internet. Use your hands. Develop programs for your robot and your phone. Be curious and invent.
The perfect course lives up to its name. You move through the content, we check it and return feedback to you.
In the end, you should be able to better understand how to program and design smart devices that would make the world a better place. For everybody age 12+, 16+, 21+, 35+, etc. The hardware costs about 150$. It changes through the years so it might take some time for you to find it as Raspberry PI, motor drivers, power banks and h-bridges.. they change. Note that the course was designed to be led by a teacher with a decent knowledge in embedded hardware and software. This, on the other hand should not stop you, if you are curious.
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Connecting Motor driver to Controller
We have the L298N Motor Driver. Rear motors are connected to the driver. Now it is time to connect the Raspberry Pi. The Raspberry Pi will control the motor driver and from there the car motors.
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- 3d_rotation 1