➀ Lady Ada 展示了如何使用 OpenAI 的 ChatGPT Canvas 作为现场 AI 设计助手；➁ 观看 Adafruit YouTube 视频了解如何为 Vishay 的 VCNL4200 距离和环境光传感器创建库。

➀ After years of attempts, the author successfully created a PCB using a CNC machine; ➁ The author encountered a minor issue with the cutting bit, but the overall outcome is positive; ➂ The author outlines the tools used, including KiCad for design, FlatCAM for g-code generation, and bCNC for CNC machine control; ➃ The author thanks the developers of the software tools and provides tips for using them effectively.

1. The article discusses the various versions of the ATtiny412 microcontroller, highlighting its specifications and different models. 2. It mentions the ATtiny412-SSNR, ATtiny412-SSN, ATtiny412-SSFR, and ATtiny412-SSF models with their respective features. 3. The article also includes a list of recommended articles and tags related to the topic.

1. TI has updated the LM339 comparator family by moving from a 150mm to a 300mm high-voltage process. 2. The new 'B' versions improve on the original designs in documented specs. 3. TI maintains an extensive app note detailing the differences and behavior of these comparators.