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Try replacing driver ic.this may solve your problem.I faced same problem but after replacing driver ic it worked fine!
I have used 100mmx40mm wheel size. Complete unit cost me around 2000₹. I purchased components from offline store of vegarobo.
what is the diameter of the wheel you have used?
which rpm motor would be better 100 rpm or 300 rpm. I am Confused.Please guide me. I am going to make this project.please give me your advice.
Great work!!I would like to know from where i should by wheels?please give me suggestion on that