June 16, 2012
Allows an Arduino/Genuino board with USB capabilites to act as a Keyboard.
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Converting a C64 Keyboard to USB with Arduino
After renovating some Commodore 64 computers, 'bisrhythm' found themselves with a few extras that were beyond repair. So instead of gathering dust in the cupboard, they have been modified to work with more contemporary PCs.
As the C64 keyboard is an 8x8 button matrix, the conversion was quite simple. The use of a virtual-USB library finalises the task and works well. Even the power LED can be illuminated for maximum realism.
When reproducing your own C64 keyboard there isn't that much circuitry to add to the keyboard. Therefore the use of one of our Arduino-compatible boards such as the Freetronics Eleven, and a ProtoShield would solve the problem nicely:
Amnesia memories game download.
So if you have your own C64 in terminal condition and want to convert it to a keyboard, the instructions, sketch and notes can be found here.
This library allows you to make the ESP32 act as a Bluetooth Keyboard and control what it does.
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Features
Esp32 Usb Keyboard
- [x] Send key strokes
- [x] Send text
- [x] Press/release individual keys
- [x] Media keys are supported
- [ ] Read Numlock/Capslock/Scrolllock state
- [x] Set battery level (basically works, but doesn't show up in Android's status bar)
- [x] Compatible with Android
- [x] Compatible with Windows
- [x] Compatible with Linux
- [x] Compatible with MacOS X (not stable, some people have issues, doesn't work with old devices)
- [x] Compatible with iOS (not stable, some people have issues, doesn't work with old devices)
Installation
- (Make sure you can use the ESP32 with the Arduino IDE. Instructions can be found here.)
- In the Arduino IDE go to 'Sketch' -> 'Include Library' -> 'Add .ZIP Library..' and select the file you just downloaded.
- You can now go to 'File' -> 'Examples' -> 'ESP32 BLE Keyboard' and select any of the examples to get started.
Example
API docs
The BleKeyboard interface is almost identical to the Keyboard Interface, so you can use documentation right here:https://www.arduino.cc/reference/en/language/functions/usb/keyboard/
Just remember that you have to use bleKeyboard instead of just Keyboard and you need these two lines at the top of your script:
Esp32 Usb Hid
- (Make sure you can use the ESP32 with the Arduino IDE. Instructions can be found here.)
- In the Arduino IDE go to 'Sketch' -> 'Include Library' -> 'Add .ZIP Library..' and select the file you just downloaded.
- You can now go to 'File' -> 'Examples' -> 'ESP32 BLE Keyboard' and select any of the examples to get started.
Example
API docs
The BleKeyboard interface is almost identical to the Keyboard Interface, so you can use documentation right here:https://www.arduino.cc/reference/en/language/functions/usb/keyboard/
Just remember that you have to use bleKeyboard instead of just Keyboard and you need these two lines at the top of your script:
Esp32 Usb Hid
In addition to that you can send media keys (which is not possible with the USB keyboard library). Supported are the following:
- KEY_MEDIA_NEXT_TRACK
- KEY_MEDIA_PREVIOUS_TRACK
- KEY_MEDIA_STOP
- KEY_MEDIA_PLAY_PAUSE
- KEY_MEDIA_MUTE
- KEY_MEDIA_VOLUME_UP
- KEY_MEDIA_VOLUME_DOWN
- KEY_MEDIA_WWW_HOME
- KEY_MEDIA_LOCAL_MACHINE_BROWSER // Opens 'My Computer' on Windows
- KEY_MEDIA_CALCULATOR
- KEY_MEDIA_WWW_BOOKMARKS
- KEY_MEDIA_WWW_SEARCH
- KEY_MEDIA_WWW_STOP
- KEY_MEDIA_WWW_BACK
- KEY_MEDIA_CONSUMER_CONTROL_CONFIGURATION // Media Selection
- KEY_MEDIA_EMAIL_READER
ESP32 As Bluetooth Keyboard · GitHub
There is also Bluetooth specific information that you can set (optional):Instead of BleKeyboard bleKeyboard; you can do BleKeyboard bleKeyboard('Bluetooth Device Name', 'Bluetooth Device Manufacturer', 100);.The third parameter is the initial battery level of your device. To adjust the battery level later on you can simply call e.g. bleKeyboard.setBatteryLevel(50) (set battery level to 50%).By default the battery level will be set to 100%, the device name will be ESP32 Bluetooth Keyboard and the manufacturer will be Espressif.
Credits
Esp32 Usb Keyboard Adapter
Credits to chegewara and the authors of the USB keyboard library as this project is heavily based on their work! Also, credits to duke2421 who helped a lot with testing, debugging and fixing the device descriptor!
