I don't know if they are on this pca9685-chip. This will only work if the pwm-signals are synchronised to each other. Hey all, I just got a L298N and connected it in a similar way as in this image (using only Output 1 for a simple DC motor): At the very first test I just connected a 8.5V source to the +12V/GND inputs without having the motor or Arduino connected - and within seconds the board became smoking hot In a second test, I connected a motor and the Arduino, generated a 2.5V PWM-Signal and set Input 1. In this picture the L298 is used in an unusual way. You can create a "PWM" signal for that which means setting the dutycycle to 100% which results in constant +5V or setting dutycycle to 0% which results in 0,0V.Įlectronic professionals and advanced electronic hobbyists don't like fritzing-pictures.įritzing-pictures add a lot of NON-relevant information. Input 1,2,3,4 need a constant voltage beeing +5V or 0,0V. You should use an ammeter to check where and when current is actually being used. But only the enable-pin of the L298 really needs PWM. In the fritzing diagram it shows that youre turning on and off power to the whole motor driver board, whereas in the Eagle schematic, youre turning on and off power to the motors power-supply, leaving the rest of the motor driver board powered up. Well this is doable but partly more or less a misuse of the pca9685.
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