Hi everyone,
I just bought couple of the pololu serial dc motor controllers and I just can not get them to work. My goal is to connect it to a max232. Howerver, I needed to test to make sure things work first before I try moving to the serial port. I decided to use basic stamps 2 homework board to test the controller. My hookups as follow:
vcc+ and GND is connected to 12v 4.5 battery. GND is also connected to VSS pin of the basic stamp
1 is connected to p14 of the basic stamp board
2 is connected to p15 of the basic stamp board
M1- and M1+ is connected to a 12v low power 220rpm motor
M2- and M2+ is connected to another similar motor
So I first tried the following:
’ {$STAMP BS2}
’ {$PBASIC 2.5}
’ {$PORT COM1}
SEROUT 15,84,[$80,2,2]
light on the basic board flashes indicating connection is good.
Unplugged the power to the controller after then plugged it back in
Second set of basic stamp:
’ {$STAMP BS2}
’ {$PBASIC 2.5}
’ {$PORT COM1}
SEROUT 15,84,[$80,0,5,127]
There was nothing.
I measure the voltage across VCC+ and GND and it’s 13V
I plugged one of the motor directly to VCC and GND and it runs just fine
I also tested the basic stamp by connecting a servo to it and able to control the servo just fine.
Can somebody give me some hints of what I’m doing wrong here?
Thanks,
Jonathan
