It hurts to look at your schematic.

you haven't seen my schematics (before i started using net-lists and sub-circuits)

 

There seems to be general agreement here, and I concur, that you probably damaged the 555 when you originally had it connected to the relay.

You have been asked twice whether you have swapped out the likely damaged chip. You have not acknowledged or answered that question.

Don’t know why people are continuing to offer suggestions at this point.

Bob

Hi,

yes, each time I tried something new, I swapped my IC with a new one, I have already destroyed about 10 IC's.

 

would like to use 1 PNP transistor instead of 2 NPN's.
but I need a transistor that can handle about 400mA of collector current as I will be connecting a small water pump there.
will "2N6107" be a good choice?

Seems like a poor choice to me:




Saturation mode characteristics are pretty vague. They assume a beta of 2.3, give horrible CE and BE saturation voltages, and don't give any graphs so you can interpolate parameters for your situation.

Have you considered a P MOSFET?

 

Seems like a poor choice to me:
View attachment 202816
View attachment 202817
View attachment 202818

Saturation mode characteristics are pretty vague. They assume a beta of 2.3, give horrible CE and BE saturation voltages, and don't give any graphs so you can interpolate parameters for your situation.

Have you considered a P MOSFET?

Hi,
Thanks for your reply.
Could you please suggest one?

 

Could you please suggest one?

TIP30C