Re: [avr-chat] LCD corruption

[Andy Warner]

Royce Pereira wrote:
> Hi all,
> I have a m8535 board which drives a relay card. Now there are some 220VAC  
> solenoid valves switched by the relays.
> 
> My problem is that when the valves are connected, the LCD gets corrupted  
> when the valves switch on.
> [...]

What kind of LCD display is it ?

How is it connected to the 8535 ?

If this is on a PCB - can you post a jpg/pdf of the board layout ?

Off the cuff, it sounds like it could be a termination and/or
decoupling problem.
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Andy Warner             Voice: (612) 801-8549   Fax: (208) 575-5634