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Product Design

Everything tagged “Product Design” across notes, resources, and Mochi logs.

ESP32-C3 board with a small OLED next to an ESP32-S3 board with a color display and speaker
NotesHardware

ESP32-C3 or ESP32-S3: Which Chip for a Robot with a Screen and Audio?

Comparing ESP32-C3 and ESP32-S3 on GPIO, RAM, PSRAM, USB, I2S, and LVGL headroom, with a concrete recommendation for a basic Mochi build and a Mochi AI build.

HardwareProduct DesignESP32-C3ESP32-S3Mochi
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Hand-held embedded display prototype running a real LVGL interface
NotesEmbedded UI

What Is Embedded UI, And Why It Matters

What embedded UI means for small devices, why small screens have small budgets, and why it deserves attention as its own discipline.

Embedded UIProduct DesignHardware
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Open hardware PCF85063A real-time-clock board rendered from its published design files
NotesProduct Design

How Free Design Resources Will Be Shared

How Nastrotek prepares and shares design files, templates, source code, and free documents clearly.

ResourcesProduct DesignEmbedded UI
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