Learn and Build

1333lab 實驗記錄簿 · 1333lab Logbook

Once you learn, myriad things come to life.

🤖 AI 機械人 · Phase 1「開聲」First Words
📦 物料清單 BOM

Bill of Materials

名稱 Name型號 Model數量 Qty價錢 Price購買地點 Source備註 Notes
ESP32 開發板
ESP32 dev board		ESP32-32D (CP2102, Type-C)2¥22.08/塊網購一塊後備 one spare
I2S 咪模組
I2S mic module		INMP441（向下焊排針）1¥18.77網購第二次購買 second order（第一次買漏咗）
I2S 功放板
I2S amp board		MAX98357A（已焊排針）2¥11.80/塊網購一用一後備 one in use, one spare
喇叭
Speaker		3020 4Ω 3W 帶線2¥2.72/個網購一用一後備 one in use, one spare
麵包板
Breadboard		MB-102 830孔1¥3.08網購
杜邦線
Dupont wires		40P 彩排 21CM3 套 sets¥6.35網購公對母／公對公／母對母各一 M-F / M-M / F-F
合計 Total≈ ¥101.40
2026-10-13 🤖 AI 機械人 · AI Robot 示例 Sample

示例：記錄格式（三節）
Sample: entry format (3 sections)
做咗咩：今日做咗咩，幾句就夠。
💡 點解咁做：決定背後嘅原因——呢節最重要，三個月後睇返先明點解。
下次點做：學到咩，下次點做。
What: What was done today, a few sentences is enough.
💡 Why: The reason behind the decision — this section matters most; future you needs it.
Next: Lessons learned, what to do next time.
📷 相片位置 Photo goes here（經 R2）
🎬 影片位置 Video goes here（YouTube embed）
2026-10-12 🤖 AI 機械人 · AI Robot 示例 Sample

示例：點解要對清楚腳位
Sample: why double-check the pinout

做咗咩：對 ESP32 板上 13／14／15／3V3／GND 五隻腳，影相確認。
💡 點解咁做：唔同板腳位唔同，網上 pinout 唔信得，要睇自己個 firmware（voice_board.c）先準。對錯腳輕則無聲，重則燒嘢。
下次點做：每次換板／換 firmware 都要重新對一次，唔好靠記憶。
What: Verified pins 13/14/15/3V3/GND on the ESP32 board with photos.
💡 Why: Pinouts differ between boards; online diagrams can't be trusted — only the firmware (voice_board.c) of this specific build is authoritative. Wrong pins mean silence at best, fried parts at worst.
Next: Re-verify every time the board or firmware changes; never rely on memory.
📷 相片位置 Photo goes here