
Metealp97

ok i have a 4wd robot building base as seen on my account's picture i connected right side motors with together and left side motors with together then iconnected them to h-bridge they worked then i needed to take it appart for some reason when i recconnected them only right side was working why is this how can i fix this
this is how i installed
h-bridge int,1 to ez-b d15
h-bridge int 2 to ez-b d16
h-bridge int 3 to ez-b d17
h-bridge int 4 to ez-b d18
thnx
Which H-Bridge is it you are using?
Which digital port controls the PWM for either side?
Is it one common PWM or have you used one for each side?
Read the tutorial I linked to, it's all in there and it's pretty detailed.
Check the output on the H-Bridge.
Put your volt meter across the output for the left motor.
When the Movement Panel is set to forwards you should get +5V or -5V the same for reverse (but reversed).
Otherwise check your wiring.
Unplug the 2 wires from the H-Bridge that drive the left motor.
Put your volt meter across each one and ground and set the Movement Panel to forwards, you should get 5V between one of them and ground.
Do the same but for reverse, the other one should have 5V.
If you don't then your wiring between the H-Bridge and EZ-B needs replacing.
Does the H-Bridge have the LEDs on to say which output is high? Some do, some don't. Mine does but I didn't get it from EZ-Robots. If it does, do these light up as they should or not?