Awesome as usual Brother Z always love a novelty!

@Zenodilodon

2 жыл бұрын

Novelty is a good word for this, at least for now... Mwahahahaha

Love the ending!

@Zenodilodon

2 жыл бұрын

I thought that it was a good wrap up :P

I had an issue with people sticking their butts in a light curtain and then saying the machine "stopped for no reason". So I put in a 24VDC piezo alarm used for alarm systems to go off whenever they did it. Got their attention.

@Zenodilodon

2 жыл бұрын

I have seen light curtains damaged by DJs quite a few times. You're an unseen, but not unheard hero!

@Zenodilodon

2 жыл бұрын

Oh! you mean the safety sensor curtain on machines. Ding, different industries different light curtains.

Genius + Madness = Zenodilodon

@Zenodilodon

2 жыл бұрын

Aye! The friend who giveth alarm modules! I'll have to bring these over to your next party :P

Decibels are logarithmic I believe so to get one more dB, you need to exponentially increase power.

@Zenodilodon

2 жыл бұрын

Correct, DB isn't linear. This of course makes gains of higher numbers much harder!

Ohhhh I wonder if it could be louder, if maybe some of the waveforms are inverted it could cancel the others? AS a child me and a friend would screech at eachother and in the middle you could hear the sounds totally clashing

@Zenodilodon

2 жыл бұрын

I think there is some cancellation happening. I want to maybe drive some of the transistors off one hex inverter so they get the same signal and are in phase. There is room for improvements, I just need to figure them out.

@phonotical

2 жыл бұрын

@@Zenodilodon could you test which are inverted using a diode?

@Zenodilodon

2 жыл бұрын

@@phonotical Electrically they are in the same phase, the issue is that they don't all have the very exact same start time, frequencies, or harmonics there of. This can only be changed by global control instead of having them independently start and stabilize at random and and off RC networks with varying tolerances.

@phonotical

2 жыл бұрын

@@Zenodilodon 1that would be my second guess 🙈

of course you made this XD

No use? How about an overheating alarm? Or a wake up call that'll stay with you all day 🤣 Could you have used only one board and transformer but connect the end to different inductors to change the frequencies?

@Zenodilodon

2 жыл бұрын

I still have alarm modules, I gave some away, took some apart, and I STILL have some lol. No the frequency is generated by the R/C circuit and then the chip puts out the final drive signal for the transistor. Doesn't really matter what you put after that, as the chip is in control. You'd probably just current limit the transducer and that's all.

@phonotical

2 жыл бұрын

@@Zenodilodon shapoopy

25:56 It's better to do this without the battery inserted, because if you overheat the plastic the force of the spring will push the contact out and ruin your battery holder

@Zenodilodon

2 жыл бұрын

I understand your point, but also this seems to have solved all my issues with melting out contacts. I used to do them empty and always had the contact melt right out. Different people, different tools, different results I suppose lol

@3zuli

2 жыл бұрын

Yeah I see, the battery contact also acts as a heat sink. In both cases, if you overheat it enough, it will melt.

@Zenodilodon

2 жыл бұрын

@@3zuli indeed, it's a task done quickly and with conscious effort any way you slice it.

I would have changed the frecvency, I would have used 20 khz, and then I would have tried the device on a dog, his hair would fall out, damn it ! I can make such a device, but I do not want to use high-level ultrasound, because the effect of a person's long exposure to such a thing is not well konwn.

dont damage the hearing of your buddies, buddy will have a hearing problem, he is leaving the place as it can be observed.

@Zenodilodon

Жыл бұрын

Thank you for your concerns. In the video though Buddy started wandering off to follow a lady walking her dog on the other side of the road. He's a social dog, that's why he's Buddy!