Hi there! I'm a complete newbie in everything that spells arduino and with little background on electricity so I'm sorry if some of the questions or all of them are easy and I purely don't have the experience to see the issue.
I've seen some posts on why you need an IC motor driver such as the L298 IC along with a couple more component like :
- The motor creates back EMF and could damage the arduino by overloading it
- The motor can only work in one direction if connected straight into the arduino, and with the controller you can actually choose the direction (and speed nonetheless)
- The motor could draw a much bigger amperage than the arduino could handle, leading to deteriorating the arduino micro controller or other components
And my questions for each one would be:
- If I simply connect a diode alongside the motor can't it block the back EMF from reaching the arduino thus leaving the only possibility to burn the diode?
2 Can't I use two pins of the arduino connected to 4 transistors ( when one outputs HIGH the other one sets to LOW and vice versa) and with a couple of diodes to control whether I want to change the polarity of the motor or not?
- My motors is an Chineese, L shaped product that works from 3 to 6 V, wouldn't the arduino itself do the trick instead of using the controller?
I know that knowledge comes from burning many circuits thus leading me to understand why something works and something else doesn't but I would love to understand a little bit more before starting to pile burnt component one after another.
And i'm sorry again if my questions are too obvious or stupid, but i that case I would really love to know why. Thank you for your time!