AVR is picking noise

A

aamir shabbir

Member

• Dec 16, 2014

• #1

Hi friends............im working on a h bridge project which is used to drive a wheel chair but the problem is AVR controller is picking noise and doing something which is not in code and it seems that the noise of motor or relay is disturbing it how to get rid of that plz guide me

 

MikeMl

Well-Known Member

Most Helpful Member

• Dec 16, 2014

• #2

Get rid of the ground-loop you created by how you wired the power supply to the Atmel and the H-Bridge.

 

DerStrom8

Super Moderator

• Dec 16, 2014

• #3

I totally read the thread title wrong....

I expect MikeMl is correct in his assumption that the issue is due to a ground-loop, but seeing your schematic would tell us for sure.

Regards,
Matt

 

A

aamir shabbir

Member

• Dec 18, 2014

• #4

the ground of h bridge is connected with micro controller ground both r shorted what should i do to get rid of noise ?

 

aquamon

Member

• Jan 4, 2015

• #5

aamir shabbir said:

the ground of h bridge is connected with micro controller ground both r shorted what should i do to get rid of noise ?

Click to expand...

Use TIP122's in [K.I.S.S.]

 

E

Embedded.Ing

New Member

• Feb 28, 2015

• #6

please post your schematic if you want more help so i can chick if there is any mistake done