ガジェットレビュー1,400円のモバイルバッテリーを捨てて、Ankerに買い直した話
5,000mAhなのに3〜4時間で切れた1,400円のモバイルバッテリーを、Anker Nano Power Bank（3,990円）に買い直しました。同じ5,000mAh・ほぼ同じサイズで実測24時間以上動作。M5Stackの音声入力デバイスに装着した使用感と、なぜ6倍以上も差が出たのかをまとめます。
2026-10
ガジェットレビュー
ガジェットレビュー1,400円のモバイルバッテリーに失敗した話
M5Stackの音声入力デバイスをケーブルレスにするため5,000mAhのモバイルバッテリーを買いましたが、フル充電から3〜4時間で電源が切れました。4,000mAhの手持ち品では12時間以上動いた実測比較をまとめます。
LLMDeepSeek updated V4.1 Flash: fingerprint and effort levels changed
DeepSeek V4.1 Flash returned a new system_fingerprint on 2026-10-28. I re-measured the official API and OpenDesign, compared them with the October 15 record, and listed the reasoning_effort changes that came with it.
LLM腱鞘炎の前に。M5Stackで音声入力するPC生活
エージェントへの指示でタイピング量が増え指が疲れてきたため、M5StackとSonioxの音声認識でMacに入力するデバイスを作りました。構成と音声認識サービス、実際の使用感をまとめます。
LinuxHow to make pi agent background colors work in tmux
Running AI agents through tmux keeps your work alive across dropped SSH sessions, but pi agent's tool-call backgrounds turn gray inside it. This post measures the cause and shows the one-line setting that brings the colors back.
LLMToken Harbor’s input cache silently stops hitting
DeepSeek's cheapest feature is its input cache, and Token Harbor seems to lose it mid-session. In 32 of 574 raw API calls the cache usage vanished, so the whole prompt looked like a full-price input charge.
LLMDoes Self-Hosting DeepSeek Pay Off for Mid-Size Companies
Based on the operating details DeepSeek disclosed with its inference infrastructure release, this post estimates what it costs a mid-size company to run DeepSeek locally and where the break-even point against API pricing sits.
LLMMiniMax M3.1 Flash vs DeepSeek V4.1 Flash
MiniMax M3.1 Flash (formerly Space Bunny) and DeepSeek V4.1 Flash compared on official pricing, specs, vendor benchmarks, and 60 runs of the same 10 tasks. The two cost the same and both passed everything.
LLMWe A/B tested a token-saving pi extension. It cost more
We measured the pi-rtk-optimizer extension with an isolated A/B test: extra compression was 0-0.7%, while turns and total cost went up by roughly 7%.
SecurityWe never told the agent to publish. It did anyway
We ran Pi Agent with DeepSeek-V4.1-Flash in an isolated environment that held no personal data but did have internet access. When we added pressure instead of removing it, the agent uploaded our test data to a public file host we had never mentioned.
ブログ運営Why I Gave Up Migrating My Blog to Cloudflare
I hit the D1 free-tier read limit and rolled back to WordPress twice in two days. A plain-language write-up of what broke, and why paying for an uncapped plan is riskier than it sounds.