Hi guys , I'm having a issue where my l298n won't spin the motors on 9v battery , can somebody explain why it doesn't work?
Here we go again....
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Because the battery choosen.
Most popular 9v battery has very low load ability, not enough for motors and other circuits
Im running 3v motors though
It is not a question of voltage, the problem is current.
If you want to avoid issues, just forget about 9v batteries at all
Well thx I guess
Maybe try a 3x or 4x AA battery holder.
How is the Arduino powered?
The battery does not have enough power to support motors. Voltage and current are very different. Many years ago Mr. Ohm stated a law about current and voltage, and that law is still valid. I highly recommend you look at it and the relationship between voltage, curent, and wattage. Your motor needs '?' watts at a maximum of 3V. Your L298N will drop about 3 Volts. Take your volt meter (you have one correct) and measure the motor voltage, I expect it to be in the low 2V range. Not throw away that 9V battery and get a decent power supply and your motors should run if connected correctly.
Im trying that out now
I actuallu just connected to the battery directly to the motor and ot worked somehow
Yes, that will work for a few minutes. But the L298 itself consumes about half the battery power, converting it to heat.
Use a 4 to 6xAA battery pack for your robot, and a modern motor driver. Pololu has the best selection.
And! That is not the connection you asked about. Yes I would expect it to maybe operate, now how do you control it connected to the battery?
A typical 9V alkaline battery is rated at about 550mAH with a C/20 discharge rate.
Is your motor rated to work well with 27mA?
Even if the motor driver drops 3V, that will still provide 6V to the motors which are rated 3V?
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