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Topic: NE555 Timer Delay Module (Read 1 time) previous topic - next topic

NervusTwitch

Ok ive been trying to wire up these timer modules into my car for a chase light/sequential function. The car has 3 lights on each side. I can get them all to light up but trying to set the timer attenuator on the module does nothing.
I have 5 of these modules, only need 2 per side but they all do the same thing so Im not sure if its a user error or possibly something up with the timers.

Also, even though the inner most light, far right in diagram doesnt go through the module, the last 2 lights blink at the same rate as the 1st,again timer set screw doesnt change anything.

Parts Im using:
https://www.amazon.com/gp/product/B07MH4GYX1/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

1st pic,The diagram Im following. I have followed just as it shows
2nd, what I have done

meltDown


6v6gt

#2
Aug 08, 2019, 10:05 am Last Edit: Aug 08, 2019, 10:33 am by 6v6gt
Is this the desired sequence ?

1. Immediately the brake pedal is depressed, the inner led should light. It stays on until the brake pedal is released.
2. After a period of X seconds, the the center led lights. It also then stays on until the brake pedal is released.
3. After a period of Y seconds, the the outer led lights. It then stays on until the brake pedal is released.

If that is the case, I would have expected Vcc of Relay 2 to be fed from CK of relay 1. There may be other problems.

Edit:

I've just read this from https://www.amazon.com.au/HiLetgo-Switch-Adjustable-Module-Second/dp/B01DK8NJNI

===================
Characteristics: 1. Connected to the power relay to 1-10s fixed cycle pull and disconnect. Specifically: to the relay for 12v power supply, the relay will immediately suck and relay output status: normally open and common conduction, normally closed and disconnected; until the delay 1-10s (can be adjusted), the release of the relay, At this moment, the state of the relay output is: Normally open and common open, normally closed and common conduct; As long as the module is not powered off, this state will keep and release with fixed cycle of 1-10s.
===================

Well it is quite ambiguous. It is not clear if the "delay" (for example 10 seconds) is the delay before the relay is energized, or the period for which the relay remains energised  after being switched on.


TomGeorge

#3
Aug 08, 2019, 11:02 am Last Edit: Aug 08, 2019, 11:04 am by TomGeorge
Hi,
Welcome to the forum.

Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html .

That PCB has an LED on it.
Does it light up when you connect power to the input terminals.
Leave the power connected for at least 10seconds to see where the potentiometer is set.

Test just ONE unit.

Remove all the wiring from the output terminals.
Connect 12V to the input terminals only and see what happens.

Do you hear the relay click?

Can you tell us your electronics, hardware experience?

Thanks....Tom... :)
Everything runs on smoke, let the smoke out, it stops running....

NervusTwitch

Ok thanks for the replies.

yes the LED's do light up, I get clicks and I have tried 1 module at a time and they all do the same.

Whats suppose to happen is that when brakes are applied both sides and center lights will sequence 1 time. Parking lights work as normal. Blinkers will sequence starting with the inner light,middle, then outside.

but Im not getting them to sequence. Yesterday I had them all lighting up but the outer 2 bulbs blinked same rate as the inner. I tried turning the attenuator to adjust but nothing happens, they just blink the same speeds.Even trying other modules and 1 at a time, same results.
If it was just 1 or 2 doing this then Id just figure a bad 1, but they all do it so it must be me.

I know this diagram works for my car since it was original made by a couple others for my specific car. Car in question here is 2004 Mustang Mach 1.

This is the guy that originally did it.

https://forums.vintage-mustang.com/vintage-mustang-forum/876090-diy-sequential-led-taillights-under-30-a.html

My electronics experience is mediocre. Nothing great but I get by normally by myself but get stumped with stuff like above.
Ive had no issues using Arduino boards to make things.
EX: Converted several joysticks to USB, completely gutting them and rewiring,various footswitches,led setups.
Ive also made led readouts to show various PC/game related info and somewhat involved button boxes using Arduinos.



TomGeorge

#5
Aug 08, 2019, 06:51 pm Last Edit: Aug 08, 2019, 06:51 pm by TomGeorge
Hi,
Have you adjusted the pots all the way form one end to the other, they are 10 turn pots?
What are you using as your power supply?
Tom.. :)
Everything runs on smoke, let the smoke out, it stops running....

NervusTwitch

Hi,
Have you adjusted the pots all the way form one end to the other, they are 10 turn pots?
What are you using as your power supply?
Tom.. :)
They will turn continuously in either direction. Its just a flat head screw,not the usual plastic phillips type head pots.
The power was the car.

I didnt really have a way to test off the car, besides this looked like a fairly simple diagram compared to some things Ive made before so I didnt really anticipate any issues.

Like I said, all lights almost work as they should. The issue is not being able to change the timings.

What Im finding odd is that instead of the lights sequencing they all will blink at the same speed no matter how much or which direction I turn the pots.
Tail lights stay on as they should,brakes come on and stay as they should.
But blinkers/hazards will all blink at the same rate.

The power LED on the module lights when power is connected. The 2nd led will blink and so will the power led when I activate the blinker. Both LED's flash at same exact rate.
The relays are also clicking on/off at same rate as LED's.

Now for the diagram above I have been chatting with another guy that used the same diagram,parts and car type with proper results. I showed him the same pic as above and he says it should be working. SO we are both kinda stumped why the timing will not change.
I figured both of us are just over looking something, I cant see all 5 being bad out of the box.

NervusTwitch

If it helps this is the cars wiring diagram.

NOTE:
On the 2 outer lights(circled) they were originally 2 wire sockets, they were changed with FORD 3 wire sockets so as to function same the middle and outer.


NervusTwitch

Oops, in that diagram, the circled lights are backwards, they are the inner lights and vice versa, the labeled inner are actually the outer.

Slumpert

Did you replace your flasher circuit with an electronic version?

Possible your blinkers are simply blinking too fast for the relay boards work correctly?

TomGeorge

Hi,
If you connect the relay input directly to the battery, do you get a delay?
That is the relay clicks sometime after the connection is made?

How long is the first indicator light on for when you have it flashing.
Indicator lights are usually only ON for about 1/2Second and OFF for 1/2Second.

With your circuit, the delay relays are only powered for that 1/2Second, so you cannot get a delay longer than the 1/2Second.

Tom... :)
Everything runs on smoke, let the smoke out, it stops running....

NervusTwitch

#11
Aug 08, 2019, 11:41 pm Last Edit: Aug 08, 2019, 11:55 pm by NervusTwitch
Did you replace your flasher circuit with an electronic version?

Possible your blinkers are simply blinking too fast for the relay boards work correctly?
Best of my knowledge its already an electronic version. The repair manual diagram above has an electronic flasher in it.

Also the ones online that have the same car and did this same thing didnt change anything other than cutting out the single 2 wire socket on each side and replacing it with a 3 wire socket just like on the middle and outer lights.

I know Im probably just over looking something here, I just dont have any idea what would keep the pots from affecting the timing.

This is the guy Ive been chatting with trying to figure this out. He did what Im trying to do on basically the same car.

Mustang Sequential lights

NervusTwitch

Hi,
If you connect the relay input directly to the battery, do you get a delay?
That is the relay clicks sometime after the connection is made?

How long is the first indicator light on for when you have it flashing.
Indicator lights are usually only ON for about 1/2Second and OFF for 1/2Second.

With your circuit, the delay relays are only powered for that 1/2Second, so you cannot get a delay longer than the 1/2Second.

Tom... :)
I havent tried to the battery yet.
I believe it is a very short delay, not even a second.

When the lights do flash, they are your typical turn signal speed.

As for the circuit, Im following the diagram above and the link in my last post is the same exact thing. He used that same diagram to do what Im trying.

TomGeorge

#13
Aug 09, 2019, 12:02 am Last Edit: Aug 09, 2019, 12:04 am by TomGeorge
Hi,
Looking at the link, its a massive show and NO tell.
There is no setup instructions that I can see.

You will have to set the delay times up on a battery, so you can see if you are adjusting it correctly.
Connect to the battery and do not disconnect until relay has activated.

Tom... :)
Everything runs on smoke, let the smoke out, it stops running....

NervusTwitch

Hi,
Looking at the link, its a massive show and NO tell.
There is no setup instructions that I can see.

You will have to set the delay times up on a battery, so you can see if you are adjusting it correctly.
Connect to the battery and do not disconnect until relay has activated.

Tom... :)
Yeah, its not a great how to on anything but I chatted with him and he gave me the diagram he used and its the one from my OP.

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