https://github.com/gdsports/usbkbdble

Convert USB keyboard to Bluetooth LE
https://github.com/gdsports/usbkbdble

adafruit arduino ble bluetooth nrf52840 samd21 usb-host usb-keyboard

Last synced: 6 months ago
JSON representation

Convert USB keyboard to Bluetooth LE

• Host: GitHub
• URL: https://github.com/gdsports/usbkbdble
• Owner: gdsports
• License: mit
• Created: 2019-02-14T02:32:36.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2020-05-24T20:04:40.000Z (over 5 years ago)
• Last Synced: 2025-03-23T21:35:43.327Z (7 months ago)
• Topics: adafruit, arduino, ble, bluetooth, nrf52840, samd21, usb-host, usb-keyboard
• Language: C++
• Size: 620 KB
• Stars: 27
• Watchers: 4
• Forks: 2
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

          
# Convert USB keyboard to Bluetooth LE

![USB Keyboard to BLE converter](./images/usbkbdble.jpg)

## Hardware

* Adafruit Trinket M0

* USB OTG to host cable or adapter

* Adafruit Feather nRF52840

* USB power bank, 5V out

* USB keyboard

Trinket M0	|nRF52840

------------|--------

GND			|GND

USB			|USB

TX (4)		|RX

## Software

### Trinket M0

Double click on the Trinket M0 reset.  When the TRINKETBOOT USB drive appears,

drag and drop the file KBDADVUARTUSBH.ino.trinket_m0.uf2 on the the drive.

This programs to the Trinket M0 to act as a USB host for the keyboard. USB

keyboard HID reports are send out the UART TX (4) pin. The source code is

at [https://github.com/gdsports/usbhostcopro](https://github.com/gdsports/usbhostcopro).

### Feather nRF52840

USBKBDBLE receives HID reports via its UART RX and sends the reports out the

BLE keyboard module.