Bad bluetooth connection

[discoding]

I connected the Calypso Ultrasonic. But the bluetooth connection is only stable witihin 1 meter of my raspberry pi4.

Connection on my phone is okay. Calypso is discovered by Raspberry Pi in the bluetooth stack.

[amotl]

Dear @discoding,

thank you for writing in. Because I am personally not operating this software with real hardware, I can't really recommend anything on this matter.

However, I've asked others doing so, and they reported back that they have been successful using an extra bluetooth dongle on the Raspberry Pi, and by connecting the machinery to a good power supply.

May I also ask if your Raspberry Pi by chance sits in an enclosure which may dampen bluetooth reception?

With kind regards,
Andreas.

[discoding]

Hi. I used a Bluetooth dongle. Also on my phone the connection was bad.

[discoding]

Btw i sent it back and they would send a new one.

[amotl]

Btw i sent it back and they would send a new one.

Excellent decision. I've heard from others that they also have been successful swapping the device. Good luck, and let us know about the outcome.

[honigwald]

I'm using RPI3 with a bluetooth 5.1 dongle and can't confirm that issue in my setup.

[UserMacUseface]

I had a model which had some issues ( probably hardware ).
Bad connection when the distance between receiver and sender was greater than a meter.
With the exchange model I am using it with a distance of about 13 m without issues so far.
Device has the most recent firmware and software ( via the Calypso Updater -> https://apps.apple.com/us/app/calypso-upgrader/id1611011749, https://play.google.com/store/apps/details?id=com.calypsoinstruments.ble_stm_upgrader&hl=en_US&gl=US )

Used with RPI4 and external 5.1 dongle.