Bluetooth dongle / range

jhny0

Hello together,

My problem is that, regardless of whether I have a Bluetooth dongle or the built-in Bluetooth receiver (in the Pi4), I cannot establish a connection to my Bluetooth devices if the distance from the device to the Pi4 is greater than 1 meter, e.g. my Bluetooth keyboard, which has Bluetooth 5.1 standard. My dongle that I bought should last 20 meters.

I have paired my Bluetooth keyboard with my notebook to test the keyboard for functionality. I was able to walk several meters from my notebook and the keyboard worked. The problem I have should be somewhere in the Pi4.

Has anyone ever had an answer or was able to solve the problem himself?

Thanks in advance for an answer.

mitu

Please add some info about your setup, as detailed in https://retropie.org.uk/forum/topic/3/read-this-first. What kind of dongle are you using ?

jhny0

@mitu

Pi Model or other hardware: 4, 4GB Version, LG Full HD TV
Power Supply used: USB-C 5.1V, 3A
RetroPie Version Used version 4
Built From: Pre made SD
USB Devices connected: USB-Bluetooth dongle (LogiLink BT0015 nano)
Controller used: 4 Controllers 2x PS4, / 2x N64-USB
Bluetooth devices: Keyboard Royal Kludge Model RK61
Error messages received: No Connection to Bluetooth devices if distance is greater than 1 meter.
Bluetoothctl on command line tells no connection.

Guide used: Google Search topics

# For more options and information see
# http://rpf.io/configtxt
# Some settings may impact device functionality. See link above for details

# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1

# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
disable_overscan=1

# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

# uncomment to force a console size. By default it will be display's size minus
# overscan.
#framebuffer_width=1280
#framebuffer_height=720

#uncomment if hdmi display is not detected and composite is being output
#hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group=1
#hdmi_mode=3

# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2

# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
config_hdmi_boost=4

# uncomment for composite PAL
#sdtv_mode=2

#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800

# Uncomment some or all of these to enable the optional hardware interfaces
#dtparam=i2c_arm=on
#dtparam=i2s=on
#dtparam=spi=on

# Uncomment this to enable infrared communication.
#dtoverlay=gpio-ir,gpio_pin=17
#dtoverlay=gpio-ir-tx,gpio_pin=18

# Additional overlays and parameters are documented /boot/overlays/README

# Enable audio (loads snd_bcm2835)
dtparam=audio=on

[pi4]
# Enable DRM VC4 V3D driver on top of the dispmanx display stack
dtoverlay=vc4-fkms-v3d
max_framebuffers=2

[all]
#dtoverlay=vc4-fkms-v3d
overscan_scale=1


##########################
#### DISABLE BLUETOOTH ######
##########################
dtoverlay=pi3-disable-bt


#hdmi_force_hotplug=1
#hdmi_cvt=1024 768 60 3
#hdmi_group=1
#hdmi_mode=3
#hdmi_drive=2

mitu

Do you have the Pi in a case that could interfere with wireless ? Are you using the USB3 or USB 2 ports for the BT dongle ?

jhny0

@mitu

The case can not interfere because it is made of plastic and the effect is the same for both USB ports (USB2 and USB3).

dankcushions

unrelated but config_hdmi_boost=4 does nothing on a pi 4. see https://www.raspberrypi.org/documentation/configuration/config-txt/video.md

jhny0

I solved the problem myself and bought the right Bluetooth dongle.

Thanks.

Fe334Ffg

@jhny0 I know that this topic is quite old, and at this point, I am doing necromancy, but what model dongle did you buy? I fought one, which thechnically works with linux machines, but the range... Well lets just say a short wired controller has better range.