I am fairly certain that the relay is wired correctly. To verify the relay is correct, remove it from the circuit and check it according to my post #22.

It is difficult to see but are you sure you soldered your wires on the sensor correctly?

Another issue is that your voltage levels are too low. You need at least 12 VDC, lower voltages will increase the current through the circuit. This could be the reason your battery is getting warm, too much current draw.

 

I am fairly certain that the relay is wired correctly. To verify the relay is correct, remove it from the circuit and check it according to my post #22.

It is difficult to see but are you sure you soldered your wires on the sensor correctly?

Another issue is that your voltage levels are too low. You need at least 12 VDC, lower voltages will increase the current through the circuit. This could be the reason your battery is getting warm, too much current draw.

Hi, sorry I haven't replyed in a very long time...

I have been busy and gave up!
Now i'm back and ready to give it another go.

I bought the sensor and the soldering on their looks right.
Tomorrow I will take a picture of it and show you it.

 

Hi, sorry I haven't replyed in a very long time...

I have been busy and gave up!
Now i'm back and ready to give it another go.

I bought the sensor and the soldering on their looks right.
Tomorrow I will take a picture of it and show you it.

Good, because I just got caught up on this thread, and am curious if you can make it work.

 

I'm using OMRON MKS2P, you can purchase it from farnell
spec as below:
DC12V DPDT Relay
10A for 250V AC or 5A for 30V DC

I use this relay to handle large load
http://ediy.com.my/index.php/projects/item/43-8-channel-relay-box

 

Good, because I just got caught up on this thread, and am curious if you can make it work.

This circuit should work. It was verified many times by some people on this forum.

The problem might be the voltage I am using is somewhat a bit low. Furthermore, I did this on a breadboard so I am not sure if there is complete connections between the terminals.

 

The connections in your breadboard are made of bent half hard brass. it is bent in a triangle shape with the top edges rolled over to allow you to insert the leads.

When you insert those large legged components, like large diodes and terminal pins, it will spread the brass wide. Then when you place a thin legged component, like your resistors right next to the large ones, the brass cannot make good contact on the smaller lead because it is held open too wide by the large one next to it.

Try putting thin, small leads at the far end of the row to allow for the brass clips to close somewhat with the longer distance between connection points.

 

The connections in your breadboard are made of bent half hard brass. it is bent in a triangle shape with the top edges rolled over to allow you to insert the leads.

When you insert those large legged components, like large diodes and terminal pins, it will spread the brass wide. Then when you place a thin legged component, like your resistors right next to the large ones, the brass cannot make good contact on the smaller lead because it is held open too wide by the large one next to it.

Try putting thin, small leads at the far end of the row to allow for the brass clips to close somewhat with the longer distance between connection points.

Thanks for the help, that is probably why my batteries gets warm...
I am currently charging up the batteries again and I will be giving this another go. I have two breadboards so I will spread out the components.

Sometimes it is pretty difficult to insert one of those diodes due to the metal wire is very thick.

Thanks for the help/info

 

If you are just trying to turn on an LED, why the need for the relay? This seams needlessly complicated.

 

I will definitely finish this project! I have been busy. I will give this another go towards end of June after I have finished my exams by then. I will do what Kermit2 suggested.

The use for the relay is so that when there is movement, it can turn on by itself(I think that is what it's for anyway)