esk8 calc donate now

Metr Pro UNITY bluetooth module

Fellow master builders!

We are happy to announce Metr Pro UNITY edition. It has been in the works since the beginning of this year and is finally ready!

The most important feature is EASY INSTALL

  1. Lift up UNITY rubber case
  2. Remove factory BLE module
  3. Insert Metr Pro
  4. ???
  5. PROFIT!!!

Metr Pro UNITY has a newer nRF52840 chip from Nordic. Otherwise it is the same good and proven Metr Pro module. It works as you would expect, just in a different form factor:

  • :alien: Firmware Over-The-Air updates
  • :lock: BLE security with Elliptic Curve Cryptography and Man-in-the-Middle protection
  • :hammer: BAUD rate and RX/TX autodetection, plug and play
  • :shield: Metal shield and 3-LED status indication
  • :peace_symbol: Works with many apps (Metr, UNITY, Xmatic) PRICE: €50 (+19% VAT for EU)

We are getting feedback from our beta testers @mackann @StefanMe @janpom and so far only found one software issue that we want to fix before shipping the modules to everyone. This is purely software, the hardware is ready. We expect to ship the modules next week.


That’s amazing!

What would be the benefit of having this module instead of the OEM BLE module, with the original module I can already make FW updates using the Android FocBox UI

1 Like

All of this stuff:

1 Like

yassss. les space consumed by wires in the bioboards builds… and in my builds…yaayyyyy!


There’s no iphone love on the FocBox UI. has all the iphone love, even for apple watch.


I will update this post with a more detailed explanation and description of the benefits later. But to have some things mentioned in short:
BLE security with Elliptic Curve Cryptography and Man-in-the-Middle protection, OTA firmware updates for the Metr Pro UNITY module, OTA updates for the UNITY firmware, automatic BAUD rate detection, useful status LEDs, support for many apps including the app for iOS and Android, support for Apple Watch, support for Android wear, realtime data for dual and quad setups, records for dual and quad setups, different modes, audio announcements, possible to change all the available UNITY settings, display all faults and all other benefits the “standard” Metr Pro module also have.


@rpasichnyk @hexakopter can we conformal coat the PCB? or is it already coated?

1 Like

Nothing compares to these modules. The ride recording and simple browser/forum compatible stats output alone is amazing enough.

Yes maybe its a closed system with proprietary hardware but these things just have it all.

1 Like

Hmm definitely interested in this.

I think it should be no problem to conformal coat the PCB. They are not coated from us. The Metr Pro UNITY module sits protected in the silicone case of the UNITY inside your boards enclosure, so it should be pretty safe. But feel free to add conformal coat to the PCB and make sure the 6 metal pins used to plug it to the internal UNITY port are covered with tape before.

Got it, thanks!

1 Like

Is there a regular metr pro thread?

1 Like

No, there is no regular Metr Pro thread on this forum yet. We will create one later, because we are very busy with the new Metr Pro Unity module at the moment, so all of you that already ordered or will order in the next days will get their modules shipped ASAP.


Didn’t want to wait for ios compatability on the unity and added features and security + a solid connection got my vote.

1 Like

Metr is like what the unity app should be in the future… far future!

Just testing… YES already working.


Something I just thought of but wondering if I would be able to use bluetooth headphones while my phone is connected to the metr? I have an old phone I could use instead if there were any issues

We have to test that. Modern phones can stay connected to multiple devices like smartwatch, earphones at the same time but its also depending on the connected device (metr).

1 Like

I can confirm that it is working. Tested it right now with music playing over BT headphones, data shown on the Apple Watch and the smartphone record data all at the same time. :sunglasses: And with the announce feature of the metr app I got my stats announced as defined in the settings. Music plays quieter and it tells me the distance every two minutes for an example.
Because it is working on the bench it should also work on rides, but don’t want to use noise cancelling headphones then.:sweat_smile:


Awesome to hear but I’ll probably use my old phone dedicated to music just incase

@rpasichnyk I have the original metr pro and a unity. Am i able to use modes or is it still not working?

1 Like