The LED's Wings Project and sensing circuit.

Thread Starter

q12x

Joined Sep 25, 2015
2,227
I see from the video it was working. The problem is the sensing circuit.
Try adding the filter circuit seen in the schematic.

View attachment 229547
I've added your filter circuit and it definitely improved it.
But is still behaving weird.
I also added 2 diodes and 100nF capacitor to the 5V supply for the relay2. That improved a very tiny bit.
Yours is a bigger improvement.
I will edit now a new video I made with my father's camera. Mine is dying. In 30m or so I will post the video and see the weird behavior, but in a working mode this time. I've also changed the antena shape, and that helped with the distance and the behavior of it as well.
 

Thread Starter

q12x

Joined Sep 25, 2015
2,227
Probably can improve the filtering by adding a decoupling circuit comprised of R1 and C1.
View attachment 229556
I've added your new filtering components, decoupling circuit comprised of R1 and C1 , and is a bit more random when switching, pretty much like in the video. Im not sure if is better or worse. It seems a bit more random this time. It changed something, but I cant put my finger on it what exactly.
More ideas, I will try them all.
I think is night for you and I wish you good night.
Thank you for your help so far. Really good ideas you had today and you saved my ass with that wire. A wire !!!! Unbelievable. :]
 

Thread Starter

q12x

Joined Sep 25, 2015
2,227
New updates, new progress:
full rez: https://www.deviantart.com/q12a/art/q20210206-Wings-Circuit-Update-869442694

q20210206 Wings Circuit copy 1.jpg
Here is someone else on another forum and my answer to him:
When you do this does the LED only glow when 5V is applied?
- It only glows when is disconected from 5V and the relay switch contacts are connected to the 220 inside the wall. It is effectively catching some current from those switch contacts of the relay itself. I think is catching an electric field or maybe the vibration from the 50Hz that is influencing the coil in the relay that is acting as an dinamo or transformer perhaps? How wonderful strange, now that I am thinking about it. Haha. No?
 
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Thread Starter

q12x

Joined Sep 25, 2015
2,227
What I've tried today.
Mister @sghioto asked my why I dont keep the pot in the SCM, as the original movie shows. And I give him a vague response at that time, "because it works without it". And today I tested both with a 10k and 1k pot, and both just shut off completely the entire circuit. Like a shunt. Nothing lit. Just all dead. When I disconnected the pot, everything got to the normal. And Im talking experimenting on the wall directly. What a pain in my back from my awkward position on it to solder those fine wires, and not to hang some other wires.
Another good idea was to work directly on the wall and I did it for a couple of hours of switching back and forth components and wires. In the end, the conclusion, all the filtering we are adding, is kind of helping but not really. I removed all the caps and resistors from the signal wire in the end.
Next, I changed the signal wire with a coaxial wire, very small diameter one. And it worked normal as before with the copper wire, but when I put the ground to the mesh of the coaxial, everything got lit to maximum. And also nothing responded. Aaah what a disappointment. I noticed that signal wire is very sensitive, pretty much like my antena, not quite, but too sensitive anyway. So I wanted to shield that sensitivity. But it didnt work.
I noticed something else very important. The white led from the SCM is ON all the time. It is off while everything is off. When I activated to OFF mode, and also the light in my room is off as well. BUT, when I switch to ON mode, that white led should get On when my hand is near it, which it does, but immediately as I retract my hand from it, it should go off. Instead remains ON all the time. I didn't pay attention to this detail before. Im sure it was the same in my previews videos and attempts. SO in a word, no matter how many "smart" filtering we will add to the signal wire or to the rails of SCM, he is functioning normal !!! but the source of interference is outside of it and is keeping it open. That's the reality. We must find that source and neutralize it.
Small modifications : I eliminated the 1000uF because they were delaying too much the normal operation of the entire board circuit. I also replace one to 100uF but then I realized its not really necessary. Sorry to be against the "normality" but hear my reasoning : If on the table is working flawlessly, then is in very good condition and very well made so far. The only problem is the wall itself. Well, the 50hz that I suspect from inside him. I tested all the caps so far and no real visible improvement from them. So I took them off. They were test subjects and nothing more.
What else? Im so tired of it not working. Its the truth.
 

Thread Starter

q12x

Joined Sep 25, 2015
2,227
Refresh my memory, how are you grounding the metal plate when on the wall?
My metal table is linked to the ground (the green wire) that is now passing through all the extension cords in the room. My metal shield on the board, is connected to the table with a long wire as well. The contacts is as seen in movie. If I interrupt the grounding from the shield, all the leds are lighting, and everything goes to ON mode. Like everything is saturated and is open everything. When I connect the ground to the metal shield, then everything starts to function normally but with errors.
In my new updated artpage, I put this little cable symbol to show what is my ground (the green wire).
1612739994904.png
also a screenshot from the movie showing the contact
1612740271184.png
Trust me, it is grounded fine. It will not work if ground is no present.
 

Thread Starter

q12x

Joined Sep 25, 2015
2,227
I dont remember what I did in the past. For sure I did it but to say it for certain, I can't remember.
So, just now, I went and linked directly to the source ground in my room, from where all the extension cords are linked, a wire and link it to the metal shield,to check maybe you are right. And guess what? It is the same as the wire coming from the table. I was a bit exited, maybe I forgot an essential check, but it seems I didn't. Ai ai ai.
So in conclusion, it is the same.
 

Thread Starter

q12x

Joined Sep 25, 2015
2,227
I notice something important.
When is on the working table, here is the Normal behavior of the LED from SCM:
It goes off when everything is completely off or on
Screenshot_11.jpg
and get on when only my hand is over SCM
Screenshot_6.jpg
Simple.
Now on the wall:
It stays On when the light switch is off
Screenshot_10.jpg
It stays On when the light switch is on
Screenshot_9.jpg
It should stay on only when my hand is over him/SCM.
It should stay off when everything is completely off or on.
And no matter what filters I change there, it's behavior is like this almost all the time. Some times it goes off only when all is off. But that is a special case when I put a lot of capacitors in a lot of places.
Right now, I leave only your filter on Signal(pin5) of the SCM and filter on IC.
This is how it looks now:
Screenshot_12.jpg
 

Thread Starter

q12x

Joined Sep 25, 2015
2,227
I'm talking about the circuit ground, the negative connection on the circuit board to the metal shield..
The negative rail (0V) of the entire circuit, has no contact whatsoever with the grounded shield.
It might be some sort of resistive contact through the cardboard but is negligible.
I mean, it works perfect on the working bench, so no problem from this perspective here on the wall as well.
 
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Thread Starter

q12x

Joined Sep 25, 2015
2,227
Problem resolved !
I have no words of thanks to you, my friend !
I also made a movie, its a bit long (9min) but please watch it. It will take some minutes until upload.
I show in it the 0V connection to the ground shield, then how it works with and without the ground wire, 1 single switch problem remains, but is 99.9% working at this point, then I mention some addons to add next, so this project is not finished quite yet.
WOW, so happy I can't believe it.
 
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