張耀仁

星期四, 10月 08, 2026

PCB trace route

You may want to try a more industrial level approach since you already handle it very well at the basic level.

Compare your PCB trace route with the following. Look at the angles and widths to reduce electromigration and Electromagnetic Compatibility.

PCB for Differential Pairs

Debug LLM-written PnR codes for PCB Design

consider current density

https://claude.ai/artifact/T6KgJqxfHcVp1nzdFcodRc

星期三, 10月 07, 2026

EX#4

課堂練習

Deadline: Saturday at 23:59

Send all the share links to me chang212@gmail.com by email with subject EX#4 [your id, your name]

To share your work, refer to the following.

How to publish a Claude artifact

How to share a ChatGPT link

How to share Gemini Link

1. Optimize trace routing on PCB given the schematic of Differential Pair Circuit

schematic

sample trace routing, share (schematic)

Steps

Do trace routing ( 參考 share, share 2, share 3)

2. 續上題，使用鑽孔路徑演算法進行PCB 鑽孔

3. Depict 3D PCB

Hint: worked out example PCB for Differential Pairs

(Bonus) 4. 接上題，Run spice simulation using NGSpice 4.6, LTSpice, or HSpice ...

結果必須包含 log、版本資訊、結果輸出

Hint: Run NGSpice in Claude Sandbox

(Bonus) 5. Build a MP4 for the process of a PCB Design (materials for your production)

星期六, 10月 03, 2026

Run NGSpice in Claude Sandbox

Re ngspice run

https://claude.ai/artifact/2FgybN4eNvefxThXaWe3Ls

steps shown in the screenshot below

星期五, 10月 02, 2026

The Google GMail MCP enables Claude TA to read text in email but does not read attachments such as png/jpg. So you are encouraged to wrap your results (3d animation, jpg/png) in a hyperlink and mail me the link so that Claude TA can parse it and grade your homework.

ngspice Not executed on ChatGPT

Why

Code Interpreter／資料分析模式： ChatGPT 有一個沙箱化的 Python 環境，和Claude的工作區很像。它過去沒有網路，而且 pip install 新套件是被阻擋的。ngspice 是一個獨立的執行檔，我不認為那裡有預先安裝，所以單純的對話模式大概跑不了它。純 Python 的替代方案是可能的（scipy、手寫的 MNA 求解器，或某個已內建的類 SPICE 函式庫）。但那會是一次節點法求解，不是 ngspice。
Agent 與 Codex 模式： 這些有較完整的 VM，有時可以安裝套件。如果學生用的是其中之一，ChatGPT 就可能安裝並執行 ngspice。至於它能不能，取決於帳號與設定，而那些我看不到。

不論走哪條路，對 netlist 做一次ngspice執行，印出來的數值應該要和作業的一致。而且頁面上應該要有執行過的痕跡： log、版本資訊、輸出。

星期四, 10月 01, 2026

如何分享 artifact

你分享錯了

這才是分享 https://claude.ai/artifact/GAw362YjrWcsq5oD7iyVib

如何分享 artifact

i love to see your artifacts in XYZ

however, you have not published those artifacts. When you share a chat, the artifacts in the chat do not automatically publish along the way. You have to publish them individually.

這代表這個 artifact 目前仍是你個人私有，缺的是「發布分享」這一步，而不是你的動畫有問題。我打不開的頁面無法評分，附件的 .gif 與 .png 我也讀不到，所以這一步是你的鑽孔動畫能被好好檢視的唯一關卡。

ways to publish artifacts:

method 1（約一分鐘）：
1. 在你自己的 Claude 帳號中開啟這個 artifact（不是對話中的預覽）。
2. 點 artifact 頁面右上角的「Share」（手機上請先點該 artifact，再點上方的分享或發布圖示）。
3. 在「General access」把設定改成「Anyone with the link」。
4. 按「Copy link」，把複製的連結貼在回信中。

寄出前請先檢查：把複製的連結用無痕視窗開啟，或用沒有登入 Claude 的手機開啟。如果你能看到動畫，我也看得到；如果顯示「Page not found」，代表第 3 步沒有儲存成功。

method 2 Inline

Just type a prompt "html" Try it to see whether it works for you also.

When you share me your chat, the artifact is inline and I can see it.