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Free and Open Source AlphaSmart Neo alternative.

denada 최신버젼 다운로드

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# DeNada
Free  and Open Source AlphaSmart Neo alternative.

There's a wiki
https://github.com/libresmart/denada/wiki

Would you like to be a project maintainer?
Open an issue requesting maintainer privileges

## Current Hardware Requirements (subject to change based on feedback)
* ESP32
* SparkFun SerLCD - 20x4 (use qwiic for I2C, or modify the code accordingly)
* USB Keyboard
* (optional) USB connector port (to avoid damaging your keyboard's usb cable)

## Instructions
Installation/Setup:
* Arduino IDE from https://www.arduino.cc/en/software
* Open arduino-alphasmart/arduino-alphasmart.ino
* Install Libraries
  * ~~Sketch -> Include Library -> Manage Librarires -> "Keypad" -> Install~~
  * ESP32-USBSoftHost.hpp
  * SerLCD.h
  * Wire.h
* Install Board Library
  * Arduino -> Preferences -> Additional Boards Manager URLs: URL_HERE -> OK
    * "https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json"
  * Tools -> Board: -> Boards Manager -> "esp32" -> Install
  * Tools -> Board: -> ESP32 Arduino -> "ESP32 Dev Module"
* Upload Code to ESP32
  * Connect ESP32 to computer via USB.
  * Select Port
    * Tools -> Port: -> /dev/cu.usbserial-0001
    * Your port may be different
  * Hold "BOOT" button on ESP32 board
  * Click the "Upload" button in the Arduino IDE
  * Wait for "Connecting..."
  * Let go of "BOOT" button on ESP32
  * Wait for upload to complete
* Use Arduino IDE as a serial terminal
  * Tools -> Serial Monitor -> 115200 baud
* ~~Connect keypad on pins 3,21,19,18,5,17,16,4~~
  * ~~believe it or not, these are contiguous on the board~~
  * ~~If the usb cable is down, and you are looking at the ESP32 Chip,~~
  ~~these pins are on the right, skipping the first 3 from the top.~~
* ~~Press keypad buttons to watch things change!~~
* Connect Pins (you may want to do this earlier)
  * I2C SDA: 18
  * I2C SCL: 19
  * USB DATA+: 22
  * USB DATA-: 23
  * there are 4 more wires you'll have to connect, but that's for power so just find something that has the right voltage
* Whatever you type on the keyboard shows up on the LCD screen.

## Caveats
* ~~Only printable characters and backspace are recognized.~~
* ~~The LCD screen does not scroll.~~
* ~~Cursor navigation not yet supported.~~
* Does not save/load/export buffers

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