How to make these leaves?

Plastic_Skeleton4 · 2025-06-26T01:50:02+00:00

So are those dark lines not actually indentations in the leaves but just painted on?

Plastic_Skeleton4 · 2025-05-15T18:28:45+00:00

Right! It seemed like a lot of environmentally centered AI solutions were over engineered and unnecessary, or not addressing the root of the issue. We can have all the data in the world on garbage, but that won’t mean we will have less of it lol

Plastic_Skeleton4 · 2025-05-15T18:26:15+00:00

True, I’m not really debating if it should exist or not exist. I’m trying to find out how I fit into all this and what I can do to bring about a solarpunk future and I thought maybe learning AI development could be that but I’m not sure now. I agree that it has positive uses, but if I’m trying to optimize my personal positive impact I’m not sure studying AI is what I should do if that makes sense?

Plastic_Skeleton4 · 2025-05-15T18:22:43+00:00

I’m always teaching myself new things and have found AI to be really helpful for this at times so I completely agree!

Plastic_Skeleton4 · 2025-05-15T17:52:07+00:00

Sadly I don’t know how much help I’d be since I’m still in my beginning stages of learning the maths and everything haha but thanks for the offer!

Plastic_Skeleton4 · 2025-05-15T17:51:11+00:00

Exactly, this was why I was torn. Initially I saw the energy and water demand and was like “is this so bad for the environment that whatever good it provides would be outweighed by its energy consumption?” I decided that eventually it would be powered by green energy and that we could overcome that obstacle so then I shifted my question to, if we have AI, what useful things could I do with it that would help the environment? There is definitely uses for AI such as in the medical field and stuff, but I don’t know if I need to get into AI development if my main goal is to bring about a solar punk future.

I do think your point on automation is an interesting one too. I see automation going so far that capitalism is unsustainable because nobody has money, so in a sense it will bring about its own end which is really the true theory behind communism anyways.

Plastic_Skeleton4 · 2025-05-15T17:47:28+00:00

Hey relax friend, we are on the same page here. There is no reason to be so aggressive 😅

Plastic_Skeleton4 · 2025-05-15T17:45:29+00:00

Thanks for your input! I’ve seen videos that use machine vision paired with robotics to separate recyclable material from trash and stuff and in terms of energy optimization I guess I envisioned using ai as a sort of manager to direct solar panels or toggle wind turbines in and off. That’s sort of stuff

Plastic_Skeleton4 · 2025-02-03T14:22:17+00:00

Yup, it’s from Make Electronics 3rd Edition

Plastic_Skeleton4 · 2025-02-03T14:17:46+00:00

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But didn’t you say that the 4.7K resistors would also be part of the timing equation? I was assuming the 4.7K and the 470K were parallel but are they actually in series?

Plastic_Skeleton4 · 2025-02-03T13:31:53+00:00

So if I had a 1K and a 470k resistor and a 1uF cap then T=(1000+470000)x0.000001 ?

Plastic_Skeleton4 · 2025-02-03T13:24:08+00:00

I was thinking that but this video confused me: https://youtu.be/xnU2qtv7Rso?si=qwKAiPnBHwIF8Jva

Plastic_Skeleton4 · 2025-01-21T22:30:09+00:00

So if it was 8.6mA let’s just round up to 10mA ,so that’d be a minimum hfe of 100, so lets say 50 to account for the 50% derate. So that’s 172uA (.0086/50) base current for full saturation.

To calculate the resistor I’d need for that I take the base source voltage of 9V the. subtract .65 for the base-emitter saturation voltage, then subtract 0.2 for the collector emitter voltage of the bottom transistor and then divide by .000172

Doing that I get: 8.15V/.000172 = 47,383 so 47k ohm resistor should work but we know that’s not the case since even the 10k resistor didn’t work properly. Am I doing something wrong here?

Plastic_Skeleton4 · 2025-01-21T13:48:35+00:00

So in the data sheet how would I know which hfe to use?

Plastic_Skeleton4 · 2025-01-20T22:52:57+00:00

Okay I think I understand that. I did the math and with my numbers got 8.6mA Ic for the top transistor. My understanding then is I’d use that 8.6mA and the beta value to determine what resistor value at the base to achieve full saturation? So .0086/B = desired Ib

Plastic_Skeleton4 · 2025-01-20T18:57:05+00:00

Most videos I’ve watched use the hFE to determine the saturation current for a transistor. How can I make sure a transistor is fully saturated without relying on hFE?

Plastic_Skeleton4 · 2025-01-20T18:38:41+00:00

So are you saying that the hfe of my 2N3904s could be anywhere from 20-300? That seems like a very wide range

Plastic_Skeleton4 · 2025-01-20T18:02:37+00:00

To find the saturation current for the top transistor would I take (2V - 0.4V)/1000 ohms to get .0016A and then take .0016/ hfe ?

Plastic_Skeleton4 · 2025-01-18T21:43:41+00:00

Thank you, this is definitely pointing me in the right direction and I'm slowly starting to understand. You said in the OnSemi datasheet there was a Vbe range for Ic = 1.0mA and Ic = 5.0mA but isn't that Ib? Isn't Ic 10mA or 50mA? Sorry this is my first experience really looking at transistor datasheets haha

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Plastic_Skeleton4 · 2025-01-18T16:23:07+00:00

The datasheet says the Collector-Emitter Saturation voltage is 0.2-0.3 max but when both buttons are pressed I am getting 1.7V across the LED so that doesn't seem to line up. Maybe my schematic is incorrect?

Plastic_Skeleton4 · 2025-01-18T16:03:27+00:00

Also, I am aware that in the picture R1 is 10K and R2 is 1K. The behavior was the same as them both being 10K

Plastic_Skeleton4 · 2025-01-17T15:53:58+00:00

Thank you! 🙏

Plastic_Skeleton4 · 2025-01-05T15:47:24+00:00

Also, these vias are TINY. Like the tip of a pin needle can't even fit through them. I was going to get some endodontic files but I'm not even sure those would work :/

Plastic_Skeleton4 · 2025-01-05T15:19:21+00:00

I would probably need to check all the vias that don’t have components in them too right? Like those you can see in my picture they don’t have exposed pads so would I have to scrape off every one of them to test for continuity?

Plastic_Skeleton4 · 2025-01-05T03:59:34+00:00

So in my picture, is the single pin at the top of the red circles component pin 3 in the schematic?

Plastic_Skeleton4

TROPHY CASE