Bluno Beetle DFR0339 - how to use it as bluetooth mouse?

Other Hardware 3rd Party Boards
1

Hi,
I bought Bluno Beetle [Bluno_Beetle_SKU_DFR0339-DFRobot] for persolnal project, I would like to build a bluetooth mouse, but I cannot find any example of using this board as mouse device even if this board provided HID "option" to do this.

Example of my code: https://pastebin.com/zE6dns5F

Standard library Mouse.h from Arduino doesn't work, because this board is recoginzed as UNO borad and this library is not compatibile.

ERROR: Does your sketch contain the line '#include <Mouse.h>'?

Can you guys help me with this? Can you tell me which library can I use?

2

A DFRobot Beetle can make use of Mouse.h and Keyboard.h because it's (basically) a Leonardo.
But the BlunoBeetle has a 328P, so it's more like a 'Uno' - and cannot use those libraries.

PE - Adding Link
Beetle Board - Compatible with Arduino Leonardo - ATmega32U4 - DFRobot

1 Like
3

OK, thanks, but can I use different library? I doesn't matter for me which library for HID Mouse I will use :wink: I need one which will works with this board.

4

Those libraries work with the Leonardo because they program the 32U4 USB chip and the PC then sees it as a mouse or keyboard (HID peripheral).
I don't know of anything similar for Uno-related boards.

5

Thanks for information :slight_smile:
I found one solution for Arduino UNO board, but I'm not sure if it's possible to make this mod on my Bluno Beetle board.

I attach this link for someone who will maybe search the same problem but for pure UNO board:

  1. https://www.arduino.cc/reference/en/libraries/hid-project/
  2. https://github.com/NicoHood/HID
6

What's the bluetooth angle though? I know BT keyboards have a matching BT usb dongle for PC connectivity and all, but what's the big picture for your project?

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I think that somebody can think that's the madness, but I would like to build a small tracball device for my mechanical keyboard. Please take a look here: https://www.reddit.com/r/olkb/comments/lu1nit/sofle_keyboard_pimoroni_trackball_integration/

I thought that in my case, it should be a standalone device with magnetic dock, it should communicate via BT and has own power, then I would be able to use it separetly as kind of "remote controll" when I need only a mouse. For the standard work, it could be docked to the keyboard.

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Hello. I'm looking into a similar project to create a Bluetooth mouse using a Bluno. I did some research and came up with a rough plan.

The Bluno uses the same microcontroller as the Uno, so you should be able to load the Uno's HID mouse library. To do this, you must flash a new bootloader to the Bluno.

To flash the Bluno, I found these instructions at https://www.dfrobot.com/blog-283.html :

Connect to the ICMP pads on the Bluno Beetle and some other boards using DFRobot eClip (https://www.dfrobot.com/product-1307.html) Connect the eClip to another Arduino board (an Uno for example). Use Nick Gammon's Bootloader Programmer utility (Gammon Forum : Electronics : Microprocessors : Atmega bootloader programmer) The utility includes many popular bootloaders. You open the Programmer utility in Arduino IDE. Upload the Bootloader Programmer as a sketch. Open the Serial Monitor window and follow the instructions there. These steps install the bootloader to the MCU (like a 328). Use the BlunoFWDownloader (there is a Mac OS X version too) to install/update the bootloader in the cc2240 chip (this provides the BLE wireless and USB connection to the MCU).

This tutorial video was also helpful: https://www.youtube.com/watch?v=hq_KQwfpajA. It doesn't deal with Bluetooth but does explain flashing the bootloader and uploading your sketch.

Jeremy

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