On the bright side, @cmartinez can you smell the smoke yet?

kv

Two things:

• It's too cold for outdoor cooking this season
• If the smoke smells like mesquite or hickory then it's a good thing . If it smells like burnt wires ... then it's a bad thing !

 

Been working on this a little today, might be a bit early. I'll do a simulation in Spice with a little help

Also, find my mistakes please.

kv

 

If I have the Photo-transistor I will still need a frequency as you suggested correct? If so, I would still want to cut it in half, correct?

You can try this as a straight light beam with no modulation, but when I tried that for a garage door safety, the output wandered all over the place. Cars going by, a cloud passing by, a person's shadow...

No, you don't cut the frequency in half. All frequency filters have some amount of attenuation at half the desired frequency. This one that I drew is -3db at 1/2 the desired frequency and keeps ignoring lower frequencies more and more. By the time a person walks by at 1/4 Hz, the detector (almost completely) doesn't detect the shadow.

 

You can try this as a straight light beam with no modulation, but when I tried that for a garage door safety, the output wandered all over the place. Cars going by, a cloud passing by, a person's shadow...

No, you don't cut the frequency in half. All frequency filters have some amount of attenuation at half the desired frequency. This one that I drew is -3db at 1/2 the desired frequency and keeps ignoring lower frequencies more and more. By the time a person walks by at 1/4 Hz, the detector (almost completely) doesn't detect the shadow.

Ok, my Schematic was just altered. I realized a couple mistakes so, reload your page and take another look if your looking for my mistakes.

Thanks, @#12

kv

 

I think I made some major mistakes on the Triac / Motor connections. I'll have to ohm them out and find the drawing mistakes.

Taking a break till tomorrow night.

kv

 

This is what you drew. I can't understand it. Therefore, I must take a stab at interpreting what you meant, not what you drew.

 

Is this what you had in mind?

 

I made some

Is this what you had in mind?View attachment 116721

I modified my circuit in post # 122 after looking at what I think it should be, I got confused with my hand drawing, on top of that I had no idea where to put the output from the LTR.

I like what you did there, I'm just trying to use my circuit board, I had designed years ago then just make some adjustments.

Thanks,

kv

 

Maybe add a capacitor on the transistor to keep the opto-coupler on steadily...
Your drawing had so many mistakes that I just started over.

 

Your drawing had so many mistakes that I just started over.

I know

I'm sure I'll be working on many more.........

kv

Edit: The guy that helped me design the circuit, did it quick and dirty, literally.

Saved me some cash on a 50 board run though

 

At least I managed to restrain myself from typing the dirty words I thought when I saw what you drew.
Stuff like, "I think you should stick with programming."

 

At least I managed to restrain myself from typing the dirty words I thought when I saw what you drew.
Stuff like, "I think you should stick with programming."

I'm just a Hobby guy, like tinkering around with electronics.

I'm no better at programming, in fact even worse.

kv

 

I'm just a Hobby guy, like tinkering around with electronics.

I'm no better at programming, in fact even worse.

kv

But... you can smoke ... right?

 

But... you can smoke ... right?

Ya, @#12 was smoking , when he attempted to read my schematic

Maybe if I get this circuit working, I'll be able to put a stack on his head and feed him some mesquite or hickory

kv

 

Oh, BTW I still need to get the correct part # on the Triac, Opto-isolator, and Photo-transistor. Just started to learn "Eagle" today.

kv

 

Ya, @#12 was smoking

Naw. I have experience with this sort of thing. I usta have a boss that was so bad at wiring that my crew didn't bother trying to find all his mistakes and fix them one at a time.. We just ripped out everything he did and did it over because it was quicker...and that's basically what I did with the KV drawing.

The opto already has a number on it, the photo-transistor was named in post #113, and the triac depends on the motor, which you have not declared.

 

The opto already has a number on it, the photo-transistor was named in post #113, and the triac depends on the motor, which you have not declared.

I don't have the board in hand, I'll have it tomorrow. I did make some changes, added the 22uF across the 2n222, added R8 value I think is what you have, and a smoothing cap 220uF that I don't have on my circuit board.

My board is half-wave, I think because he needed to drop the voltage to 5.97 vdc.

Still finding things to be added. Tomorrow I'll get my Triac part #, it's old, like me.

kv

 

Naw. I have experience with this sort of thing. I usta have a boss that was so bad at wiring that my crew didn't bother trying to find all his mistakes and fix them one at a time.. We just ripped out everything he did and did it over because it was quicker...and that's basically what I did with the KV drawing.

The opto already has a number on it, the photo-transistor was named in post #113, and the triac depends on the motor, which you have not declared.

Just found a picture of the board, I forgot I have one in photobucket. As you can see, the Triac is a SC1420.

kv

Edit: Here's the bottom...

 

Here's what I have so far, but I know it will need some major tweaking, and part connection issues. I think I messed up on my Pencil sketch of the board.

kv

Edit: I think it's correct now, I'm not sure about the LTR circuit yet?

Last edit to the schematic this morning 8:05am

 

I added the LTE and 555.

kv