Thank you so much. When I get into it I will probably have som questions.
My thoughts about 6v was that I think the servo had too much voltage with a 9volt battery. I am using a 9 volt battery though (and the voltage regulator to 6v) because of its physical size. It fits well for this project.

Som time ago I was wondering if I should use 9 volt for the circuit and then use the voltage regulator for the servo only.

I will have to go through my components to see what I have and what I have coming in the mail and then order what I dont have.

There's no real benefit in going to 9v. It won't improve the timing issue, all it will do is marginally increase current draw. I would have probably gone with either 4 x AA cells (6v) or 2 x A123 LiFePO4 (6.4v) and avoided the losses in the regulator (maybe 1/4 - 1/3W). An alkaline PP3 battery has an energy capacity of about 3.7Wh (down to terminal voltage of 6v) of which maybe 70% is usable here = 2.6Wh and your servo/circuit will draw maybe 200mA while positioning and 10mA idling, so about (crudely) 1.5W, giving approx 1h45m of active operation.

 

Hopefully I will get to work with your improvements this weekend. I have received the 1N914 diodes and I think the 1N4148 can be here any minute now. I have also purchased the 4002 and should have it in two days.

If I breadboard your latest suggestion, should it work then? or will it only work when manufactured as a PCB?

I think I will draw a new circuit diagram. V2.

 

It'll work on a breadboard, suggest you try it.

 

I can't seem to find through hole IRF7404 anywhere.

Normally I shop at aliexpress and just wait for it

but I do also sometimes go to a physical shop here in Denmark:
https://elektronik-lavpris.dk/c5248/komponenter/transistorer/mosfet/

 

won't the IRF9530N work for M1 and M2?

 

won't the IRF9530N work for M1 and M2?

Not really,

I'm sure I found a through-hole 7404 but never mind

Use a IRLU9343 (TO-251 I-pak) or IRLIB9343 (TO-220F), these are very similar logic-level P-MOSFETs

 

I have searched digikey.dk and danish seller's websites.
I also searched for IRLU9343 and IRLIB9343 on digikey and found nothing unfortunately.

Do you have a link to where you would them?

 

Hmmm, you need to widen your search more

Try:

UK
Farnell: IRLU9343 £1.13 each, IRLIB9343 £1.48 each
RS Components: IRLU9343 £0.94 each in pack of 5, IRLIB9343 £1.28 each in pack of 5
Mouser: IRLU9343 £0.92 each, IRLIB9343 £1.21 each

DK
Mouser: IRLU9343 1.02Euro each, IRLIB9343 1.34Euro each
farnell IRLU9343 Kr 9.66 each, IRLIB9343 Kr 11.37 each
RS Components: IRLU9343 Kr 8.75 each in pack of 5, IRLIB9343 Kr 11.964 each in pack of 5

All prices ex-taxes & shipping

 

oh, they are not danish

But that doesn't matter. I ordered at RC-Components. Thank you again. I added all of them to my Bookmarks.
I will draw a new diagram and post it here.

 

I'm sorry i'm not that good at reading and understanding diagrams yet. Did you draw two 4002 ICs and used the B section of each?

 

no, 1 x 4002, use both halves, 1 input on each half is grounded.

 

Here is a new circuit diagram. I hope I have got it almost right. I have to get some sleep and I will look into it again tomorrow.

I have a little trouble with placing net labels and placing power ports in kicad I think. I can't define the 'Power_on' as '+6v' because then it will have power all the time, right?

 

I have a little trouble with placing net labels and placing power ports in kicad I think. I can't define the 'Power_on' as '+6v' because then it will have power all the time, right?

Not necessarily, it depends on the circuit function.
Max.

 

thanks. U2 and Q1 are switching on and off power to the rest of the circuit (Power_on).

 

Keep in mind you cannot assign a power source where there is a IC power source present, as in the output of a regulator IC (7805) etc, you will usually flag an error when doing a Rules Check.
In this case just leave the power line un-annotated.
Max.

 

I think I had to add a power flag in the top by Q1 to satisfy the Rules Check.

I have attached an updated Circuit diagram.

 

But normally you would have had a confliction warning with a power flag on the output of U1? , as U1 out pin 3 would normally be named as a power source.
Max.

 

I have been breadboarding this circuit and found a couple of errors I made in drawing the circuit diagram: Q1,Q2,Q3 and C11.

I am still waiting for the IRLU9343 to arrive in the mail.

Updated PDF Circuit diagram

 

Has that passed the Rules Check?
Max.

 

Yes it has. Shouldn't it?