70 lines
2.1 KiB
Markdown
70 lines
2.1 KiB
Markdown
# ₿TClock
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**NOTE**: C++ is not a language I'm experienced in. The quality of the code is probably bad and makes experienced C++ developers cry. For me it works, I do hope people will help making the code better through pull requests.
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What you need to build this is:
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- 7x 2.13 b/w eInk screens (the b/w/r don't have fast partial refresh, it should work but it's really slow).
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- MCU (For this project you need an ESP32 with 4 MB Flash)
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- 3D Printer to print the [case](https://www.thingiverse.com/thing:6009628)
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- Soldering Iron (to solder the header pins)
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- Some dupont wires are handy, but if you chain them using the 2x8 pin headers you don't necessarily need them.
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This project has been developed and tested with Platform.IO. Don't forget to build the filesystem image and upload it to be able to use the web interface.
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## Features
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- Screens:
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- Block Height
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- Moscow Time
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- Ticker
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- Time
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- API for Custom Text
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- Web interface
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- OTA update mechanism
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## License
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Apache 2.0.
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The popular font [Steelfish Rounded](https://typodermicfonts.com/steelfish-rounded/) is not directly compatible and therefore not included, you can download it yourself for personal use for free, and convert it using [fontconvert](https://github.com/adafruit/Adafruit-GFX-Library/tree/master/fontconvert) to use in this project.
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By default [Oswald](https://github.com/googlefonts/OswaldFont) is used.
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## Hardware
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### Shared pins
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| Description | Pin | Wire color |
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| --------- | -- | ----- |
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| SCL(SCK) | 18 | Green |
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| SDA(MOSI)| 23 | Yellow |
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| RST | 2 | Orange |
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| DC | 22 | White|
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### Per screen
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CS wire is <span style="color:blue">blue</span>, BUSY is <span style="color:purple">purple</span>.
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| Screen # | CS | BUSY |
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| --------- | -- | ----- |
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| 1 | 21 | 36 |
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| 2 | 13 | 39 |
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| 3 | 5 | 34 |
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| 4 | 17 | 35 |
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| 5 | 16 | 32 |
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| 6 | 4 | 33 |
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| 7 | 15 | 25 |
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### Wiring with Wemos S2 Mini (change the pins in functions.cpp)
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