April 15, 2025

Good morning!

...

It’s time to kick off another exciting day of our tech course!

Let’s dive in and make something amazing together!

Today, we’re diving into the exciting world of “amplification”!In our case, “amplification” means making an electrical signal stronger — boosting it up!

Now here’s something cool:Microcontrollers have a built-in system that converts analog signals into digital ones.

This powerful feature is called an ADC — Analog-to-Digital Converter!

We’ll get into the detailed inner workings a bit later — so stay tuned!

But for now, here’s something important:To use the ADC properly, the electrical signal needs to be big enough.

If the signal is too small, the microcontroller won’t be able to convert the analog signal into a clear digital one.In short — no boost, no data!

So yes — amplification is the key to making sure our signals are strong and ready for action!

・・・

For today’s amplification adventure, we’ll be using two essential electronic components:

✨ Resistors

⚡ Operational Amplifiers — also known as Op-Amps!

These two heroes will help us take tiny signals… and turn them into something powerful and readable!

Let’s unlock their true potential together!

Both of these components can be bought for just a few cents each — super affordable!And get this — American-made Op-Amps are especially famous around the world.

They pack serious power despite their tiny size.

Once you see what they can do, you’ll be blown away!

The Op-Amp shown in that YouTube video?

Yeah — it’s crazy powerful... maybe even too powerful for what we need right now!

So for this project, we’re going with a much more affordable version — still awesome, but perfectly suited for beginners and budget builds!Let’s keep it smart, simple, and effective!

Above all else, we can’t forget our ultimate motto:

✨ Light. Cheap. Cool. ✨

That’s our mission — no compromises!And this time, we’re sticking to it no matter what.Let’s build something awesome that’s smart, stylish, and super budget-friendly!

And here’s the golden rule of our business:

💰 We sell it for at least 10 times the cost. 💰

No exceptions!

This is the heart of our strategy — the secret sauce that makes our project both sustainable and profitable.Let’s make it smart, stylish… and a solid success!

Let me say it again —

Burn this into your brain! 🔥

✅ Light.

✅ Cheap.

✅ Cool.

✅ And sell it for 10 times the cost.

We’re not just planning to do this —

We’re going to make it happen.

No excuses. No turning back. Let’s crush it! 💪

...

Alright — let’s bring the focus back!

This time, we’ll be using two powerful components:

🔹 Resistors

🔹 Op-Amps (Operational Amplifiers)

With just these two, you can easily build an amplifier — simple, effective, and super handy!

Now, let’s jump into how this combination works and how you can make it amplify signals like a pro.

In the end, we’re aiming to design like true professionals! 

Sure, there might be some tough parts along the way…

But don’t worry — stick with me, and we’ll tackle it all together!

Let’s grow, build, and level up — step by step.

Let’s do this!

...

From now on, I will explain while having a conversation with ChatGPT.

https://chatgpt.com/share/67fe9ee6-581c-800c-81a9-880af6320be0

At this point, we’ll pause the conversation with ChatGPT for a moment.

ChatGPT gave us a sketch — but let’s be honest, it’s a little hard to follow.

So now…It’s time to clean it up and redraw it — nice and clear!Let’s make it crisp, sharp, and easy to understand!

・・・

Let me change the topic a little...

I feel that President Trump is working to maintain global balance.

As for tariff policy — what would happen if tariffs were completely eliminated?

For example, let’s consider automobiles, which are one of Japan’s main export industries.

According to one analyst, if tariffs were completely removed, the global automobile market would be flooded with Chinese-made cars.

Chinese cars offer decent performance and are extremely affordable.

Without a doubt, Chinese vehicles would dominate the global market.

There is a debate over whether that would be a good thing or a bad thing.

I do believe that the Chinese people are extremely intelligent.

However, when doing business, I think it’s important to also consider the interests of the other country involved.

We should avoid doing things that would destroy the industries or economies of other countries.

I believe we need a system that benefits not only our own country, but also other countries — and the world as a whole.

I understand the feeling.

Japan was in a similar position to today’s China back in the 1980s.

However, in order to maintain the current global system, I believe it’s time to reconsider.

I think President Trump sees a major issue in this very point.

Let me repeat:

If Chinese companies truly take this point into consideration, and if both countries can share mutual benefits, then the entire world will come to genuinely respect China in the truest sense.

That is what I believe.

...

No worries!

We drifted off a bit, didn’t we? 😅

Let’s wrap it up here for today.

See you again tomorrow —I’m looking forward to it! 😊