Hi, im a student here and im new to electronics and stuff and i currently am doing a project but im facing some problems that i need help with.
So, I need to make a circuit that gives me an time delay of about 26secs using a 555 IC to run a 12V DC motor. I also have a simple On/Off switch that allows me to start and stop the motor whenever i On/Off it.
I attached a monostable circuit drawing of my circuit without the diode for now . As i want to allow it to have the time delay working first before adding in the diode to gives accuracy.
I also attached a picture of how my circuit looks like on the breadboard now.

Currently, my motor runs non-stop when the switch is on and only stops whenever i Off the switch. The time delay does not work , im not sure why.
Also, how do i make use of the diode to allow it to give me consistent time delays every run.
Thankyou!

 

Currently, my motor is able to run at different timings like sometimes at 5 sometimes 1 sometimes 10 secs. I believe its due to my 555IC being slightly hot , is there any reason as to why my 555IC is getting abit hot. Sometimes it get really hot if its running for a longer time.
I tried changing the 555 too and i believe that my NE555P is able to support the 12V dc motor im using. Im also using a 9V battery

 

You have this thread running over at the ETO site. You said there that the motor draws 0.4-0.5A. The 555 is rated for only 200mA, so no surprise it gets hot.

 

You have this thread running over at the ETO site. You said there that the motor draws 0.4-0.5A. The 555 is rated for only 200mA, so no surprise it gets hot.

Is there any solutions as to how i can solve it? like how can i reduce its current or

 

Yes. Use the 555 output pin to turn on/off a suitably-rated transistor (bjt or fet) which switches the motor on/off.

 

Can you explain how your circuit works. This circuit is different than the one you have at ETO.

 

Yes. Use the 555 output pin to turn on/off a suitably-rated transistor (bjt or fet) which switches the motor on/off.

Oh but how should i connect it? The collector emitter and base where should i connect to?
Also, does a NPN transistor not work here?

 

Can you explain how your circuit works. This circuit is different than the one you have at ETO.

Its slightly differnt that schematic was given by someone that replied to me in ETO at the early stages of my work. Its on the ETO thread but i believe that its still similar not much changes was done tho.

My circuit is suppose to work like this, First when i turn on the switch which will start my motor, the motor should have a time delay of about 26secs before it is automatically turned off,if i did not Off my switch during the 26secs duration. I can also On/Off my switch to Start/Stop my motor whenever i want.

 

i tried using the transistor 2N3904. However, the transistor and diode became very hot. This is how i connected it im not really sure if its correct.

 

Oh but how should i connect it?

A 2N3904 isn't rated to carry as much current as your motor draws, so unsurprisingly it gets hot.
I've shown an example breadboard layout in your thread at ETO.