Knowledge stone v3 (with display and more...)
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Description
Hello Traveller…
I have created a new version of the Knowledge Stone — the same lore-friendly desk companion, now with a round display and Wi‑Fi, so it can teach you words from No Man’s Sky and from dictionaries you host yourself on GitHub.
What it does
- Shows a random word on a 1.28″ round TFT (240×240, GC9A01), with optional NeoPixel LED's in the same accent colour as on screen
- NMS alien languages (Gek, Korvax, Vy’keen, Atlas, Autophage) plus real wordls language pairs (e.g. Spanish/Czech, English/Spanish) and topic lists (world capitals, chemical elements… endless possibilities )
- Wi‑Fi: fetches word lists from GitHub, NTP clock at the bottom (12h / 24h configurable)
- Each dictionary is a simple .txt file with # @… metadata (phrases, colours, layout) — easy to edit and share
Electronics (BOM)
| Part | Notes |
|---|---|
| ESP32‑C3 Super Mini | Main MCU, USB programming |
| 1.28″ round display with GC9A01 driver | 240×240 SPI, 8‑pin module (get the same as seen in pictures - with rectangular frame!) |
| WS2812 NeoPixel strip (8 LEDs) | 8 LEDs (optional but recommended) |
| 3.3 V power | USB or regulated 3.3 V; display backlight often tied to 3.3 V |
Display wiring (ESP32‑C3, as in project User_Setup.h):
| Display | ESP32‑C3 |
|---|---|
| SCL | GPIO 4 |
| SDA (MOSI) | GPIO 6 |
| CS | GPIO 7 |
| DC | GPIO 10 |
| RES | GPIO 3 |
| VCC / GND | 3.3 V / GND |
| BLK | 3.3 V (always on) |
NeoPixel 5V LED strip: data → GPIO 8, 8 LEDs, common GND with MCU.
3D print
- Print the Knowledge Stone body from the files attached here, 0.12mm layers or finer recommended. No supports needed.
- Route wires through the cavity; secure the PCB with small zip tie
Firmware & dictionaries - github.com/PraetorianCZ/NMS_knowledge_stone
- Arduino IDE (ESP32 board support)
- Libraries: TFT_eSPI (copy project User_Setup.h into the TFT_eSPI library folder), Adafruit NeoPixel, U8g2, U8g2_for_TFT_eSPI (install locally — not stored in the Git repo)
- Sketch: NMS_Words/NMS_Words.ino — copy nms_config.example.h → nms_config.h, set Wi‑Fi SSID/password and optionally which dictionaries to use
- Word lists & index.txt: github.com/PraetorianCZ/NMS_knowledge_stone (dictionaries/ folder). You can add your own .txt files and push them; the stone downloads them on the next refresh.
Configuration highlights
- NMS_DICTIONARIES — e.g. "gek,capitals_cs" or empty = all files listed in index.txt (max 8 names)
- Random interval between words, clock on/off, accent border, per-dictionary colours/phrases via # @accent, # @phrase1, etc.
Details: see README in the GitHub repository.
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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