New Long Range Bluetooth Devices

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  • It's been pretty difficult to get hold of Bluetooth LE adaptors that have decent aerials on them, so I have now started stocking some in the Espruino store:

    USB BLE dongles

    I've been using one for a few weeks now and I'm noticing significantly higher range. They work great with Windows and Linux.

    I've also got a batch of MDBT42Q Breakout boards made with a u.FL socket for an antenna, and these seem to really help with range as well. I'm seeing between 5-20 dBm increase in RSSI values when scanning for advertisements from the board.

    MDBT42Q Breakout boards

  • Would this BLE adaptor allow me to connect to a Pixl.js over a longer range, or would the device on the other end also need a proper antenna? I'm guessing the latter, but just wanted to double-check.

  • Yes, the USB Bluetooth adaptor would definitely help - obviously you get best performance if both devices have an external antenna, but even if just one has an antenna it's a marked improvement.

  • The 'long range' in name probably does not mean it supports BT 5.0 125kbs or 500kbps long range Coded PHY modes that 52840 chip can do? (as described e.g. here­/tested-by-nordic-bluetooth-long-range). For a moment I was hoping it is dongle just for that.

    And BTW the product link­4.html in shop page goes to 404 , is it this one­b-bluetooth-dongle.html ?

  • Thanks - just updated the link.

    Yes, it's a standard Bluetooth Low Energy 4.2 dongle - no fancy 5.0 features like long range (not that those are currently supported by Espruino devices anyway).

    It's what I use on my desktop here (and for flashing Bangles) so I'm reasonably confident in it. There's a very noticeable improvement in range over the standard USB dongles (and the one usually built into laptops).

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New Long Range Bluetooth Devices

Posted by Avatar for Gordon @Gordon