ak.ito@RUSHTECH

DGX sparkをお家パソコンとしているが、消費電力が少ない点が最高だ。アイドル時で40W、LLMの学習など最大負荷でも150Wは行かない。発熱もMac miniなどよりずっと低い。メモリが遅いという欠点はあるが、電力や冷房に限界がある自宅環境では、CUDAマシンとしてこれ以上のものはないだろう。

何度も言うが、「リアルタイム制御」の本質は「応答の速さ」ではなく「応答が揃う」こと。 これ、制御屋でも理解していない人が多い。特にPLCのフリースキャンで「速く回ること」ばかりに注目している人ほど、制御の本質を外してる気がする。 装置制御で本当に重要なのは平均応答時間ではなく、サンプリング周期のジッタと、入力→演算→出力の遅延ばらつき。これらが揺れると同じロジックでも出力タイミングの位相が毎回変わる。 例えば、 「1回上手く動いても再現性が出ない」 「負荷が増えたら時間関係が崩れ、制御が破綻する」 などは、時間の設計ができていないから起こる。 特に多軸同期や位置同期出力などの制御で効くのは、速さそのものではなく、「低ジッタで揃っている」こと。 制御が破綻するのを性能不足のせいにする人が多いが、これは性能不足ではなく、時間設計不足。 これも何度も言ってるが、設備の制御屋はモータを回したりI/Oを叩いたり機器と通信するのが仕事ではなく、時間を設計するのが制御屋の仕事。

A 17 year old high schooler told his mom he needed a Steam Deck for school. She said no, it's a gaming console. He said it runs Linux. She didn't know what that means. Bought it for his birthday. $280. He never installed a single game on it. Opened the terminal, installed Claude Code and typed his first command while holding the device like a PlayStation controller. Thumbsticks on both sides. Code editor in the middle. The most ridiculous dev setup anyone has ever seen. At second 0:09 you can read what he typed into the terminal: claude your code looks like absolute shit Claude didn't argue. Just started rewriting the shader, adding bloom effects, fixing chromatic aberration and improving the particle system. On a gaming console held in two hands on a couch. His friends play Fortnite on their Steam Decks. He builds software on his while lying in bed. He set up Claude Code with custom skills, hooks that auto run tests every time a file is saved and memory that remembers every project across sessions. The stuff most developers pay $200 a month for and use at maybe 20% capacity. He runs it on a $280 handheld and squeezes out every feature. Within three weeks he had built and sold four small apps to local businesses. A booking page for a barber shop, an inventory tracker for a vape store, a menu site for a taco truck and a scheduling tool for a dog groomer. All built on a Steam Deck in his bedroom. All coded by Claude while he gave instructions with his thumbs. Made over $13,000 in his first month. His mom still thinks he plays games on it. His teacher caught him using it during study hall. Looked at the screen expecting a game. Saw green code scrolling and Claude asking: Do you want to make this edit to main.js ? Teacher had no idea what she was looking at. Told him to put it away. He closed the lid. Claude kept running inside. A $280 gaming console that his mom bought thinking it was a toy is now a development workstation that earns more per month than her car payment. Setup time: 20 minutes once. Time he saves every day: 3 to 5 hours. Money made in month one: $13,000. Games installed: zero. His grandpa asked him to install FIFA last weekend. He said the console is busy. Grandpa asked doing what. He said working. Grandpa didn't ask again.