Hi fellows, I have a strange 'problem'. I created a work around, but am still curious what could be the cause!
I'm connecting an H-bridge (L298N) unit (http://www.dfrobot.com/index.php?route=product/product&product_id=66) to my Arduino and use (amongst others) this code:
uint8_t motor1_en = 9;
uint8_t motor1_dir = 8;
uint8_t motor2_en = 11;
uint8_t motor2_dir = 10;
...
digitalWrite(motor2_dir, HIGH);
analogWrite(motor2_en, motorspeed);
I was expecting (ergo: the information from that site has a sketch with that code), that the motors could be set using a value from 0..255 and setting the direction to low and/or high.
But... when I test it using my motor on output 2:
I need to set direction to HIGH and 0 is maximum speed forward, around 100 is minimum speed forward, 125 is about minimum speed backward and 255 is the maximum speed backward. That seems to be quite strange. I don't see any mistakes, I think that I have connected everything well. I know the atmega328 datasheet almost by heart (only 500+ pages ;)).
