Welcome on the support page of CME. This is the page where you can find useful information about Bluetooth MIDI, WIDI devices and other MIDI tools.
You can scroll down and learn more. Or use the links to skip to the section you need.
Are you curious to find out which WIDI device you will need? Simply click the button below!
WIDI Buyer's GuideSelect the right WIDI device!
Connect up to five (5) WIDI devices!
Add third-party BLE MIDI devices!
Bluetooth MIDI performance!
Understanding USB MIDI!
Understanding Bluetooth MIDI!
Note: All WIDI devices work in the same way when establishing connections via Bluetooth. Therefore, the videos with WIDI Master are applicable to all WIDI devices. Refer to the Quick Start Guides for more details specific to your WIDI device.
When updating your USB MIDI hardware device to v3.7 (or higher), please download the latest version of the UxMIDI Tools software v3.9 (or higher) to match versions without errors.
For understanding how to operate the MIDI filter, mapper and router for CME's USB MIDI hardware devices, please refer to this online start guide.
WIDI Master gets its power from the MIDI OUT or THRU port of the MIDI device you connect it to. Always make sure that the large main adapter is connected to the MIDI OUT or THRU port. This process is explained in the quick start guide .
The standard MIDI OUT or THRU port supplies 3.3v or 5v via the 5-pin DIN MIDI connector. It is a standard as proposed by the International MIDI Association.
If your WIDI Master does not start up, first check that no LED indicator is visible. Once you're sure you've plugged it in correctly, you can do a number of things.
Option 1: Check out the open source compatibility list to see if your device is listed and validated by the community.
Option 2: Create your own DIY power solution
Front Side View DIN Connectors - Click Image To Enlarge
Click image to enlarge
Option 3: Ground your WIDI Master
When WIDI Master is not getting power from the instrument, it is usually a problem of missing ground on the instrument side. The midi specification mentions ground should be connected to midi out din pin 2 but it is not mandatory.
What you can try is to add a wire between the WIDI Master DIN shield (in or out) and the instrument ground. If your instrument has a metal case it should be connected to its ground, so you can use a screw to connect the wire.
Option 4: Get yourself WIDI Jack + 5-PIN DIN cable option
If your WIDI Master is not powered by the MIDI device you attach it to, please go to the WIDI Jack product page and order WIDI Jack + 5-PIN DIN bundle. Add an external power supply via USB-C (this is NOT a MIDI USB port).
Option 5: Reach out to us
If you think you need our support. Simply go to the support form at the bottom of this page and reach out to us. We are happy to help and aim to answer your request within 24 hours.
If you experience latency or connections issues, there are a couple of basic steps you can process to immediately solve the issue.
Note 1: If you are pairing with an operating system like Windows, iOS, macOS or Android, please make sure you update to the latest version of your operating system and, if applicable, the latest version of your Bluetooth driver.
Note 2: Please note that pairing with your operating system's built-in Bluetooth is not the same as pairing two WIDI devices. To take advantage of the optimal performance of Bluetooth MIDI, it is recommended to get around the limitations of your integrated Bluetooth by using WIDI Bud Pro or WIDI Uhost.
WIDI groups are useful to create 1-to-4 MIDI Thru and 4-to-1 MIDI Merge setups. You can add up to 5 (five) WIDI devices in a WIDI group via the WIDI app (Android/iOS).
Please note that group performance is different compared to a direct WIDI-to-WIDI paired connection. To fully benefit from WIDI groups please make sure you carry out the following steps:
If you experience problems with jitter or latency, please test the performance of your WIDI-to-WIDI connections and compare it to the WIDI group performance if possible.
WIDI groups can introduce a small amount of additional latency. In order to give the appropriate time slot to each connected device, Bluetooth timings cannot be set the the lowest amount like with a direct WIDI-to-WIDI connection. If your most important metric is latency, make sure you set all WIDI devices in the group to the default "preferred latency" mode via the WIDI app.
If you are working with MIDI clock and are in need of the best jitter performance, make sure to set each individual WIDI device “preferred jitter” mode available through the WIDI app.
If you still experience unwanted performance, please fill in the form below. Our team will try to sort things out together with you to provide you with the wireless MIDI experience you deserve.
In most cases, connection issues with WIDI App via the build-in Bluetooth MIDI of your mobile device are caused by Bluetooth cache issues of your operating system.
macOS 13.5 Ventura (and above) introduces automatic connection to WIDI devices after the first time pairing.
After confirming the pairing when you first connect between your macOS operating system and the WIDI device, it will automatically reconnect every time you start your WIDI device or Bluetooth on your macOS operating system.
This is a great feature because from now on, you won't have to connect manually every time. That said, it may cause confusion for those who want to reconfigure their setup without macOS or work with multiple WIDI devices.
To avoid this, you can disable Bluetooth on macOS or remove all (unwanted) WIDI devices from your general list of Bluetooth devices via the "Forget this Device" option in the Bluetooth menu of macOS.
This will avoid the automatic connection with your (unlisted) WIDI devices and you will have to confirm a pairing manually first when you want to connect again to the built-in Bluetooth of macOS operating systems.
iOS 16 (and higher) offers automatic connecting with WIDI devices.
After confirming the connection for the first time between your iOS device and WIDI device, it will automatically reconnect every time you start your WIDI device or Bluetooth on your iOS device.
This is a great feature, as from now on, you will no longer have to manually connect each time. That said, it can bring confusion for those who use WIDI App to only update their WIDI device and not use an iOS device for Bluetooth MIDI.
The new auto-connection can lead to unwanted connecting with your iOS device.
To avoid this, you can create fixed connections between your WIDI devices via WIDI Groups.
Another option is to terminate Bluetooth on your iOS device when working with WIDI devices or to remove all WIDI devices from your general Bluetooth listing after updating.
In most cases you can simply follow the connection instructions as provided via the online start guide of your WIDI device. If you experience problems with establishing the connection, please note the statement below.
Recently, we received reports from the WIDI community that Android 13 could not establish a stable connection to WIDI. Also, apps like MIDI BLE Connect and Bluetooth MIDI Connect are not being supported on some Android 13 devices.
We checked with Google's engineer and below you will find the answer:
Bug description:
b/246412046 | P2 | Can’t disconnect and communicate with BLE MIDI device.
Google explanation:
Generally, people will have to wait for an OTA update from their phone manufacturers.
Pixel phones should be getting the fixed TQ2A update now via this page.
Other phones will follow.
More info is available at Google Support.
Windows 11 has two Bluetooth modes. When you want to add a WIDI device, you will need to switch to "advanced" mode first. To get started first install the Korg BLE MIDI driver and power on the WIDI Device.
Note: Windows 11 has a known problem with non-standard Bluetooth devices such as WIDI devices. Once you make the first connection, it will always automatically connect to your WIDI device.
This is perfect if this is what you want. If you want to use your WIDI device in a different setup, such as connecting to another WIDI device, you have to disconnect from the menu above, remove your WIDI device from the device list, and restart your computer completely.
Just deleting is not enough. A complete reboot is required.
The device is in firmware upgrader mode, please use WIDI App to upgrade the firmware. Please read this simple blog to explain how to easily solve this.
Or restore the update process by following these steps:
For your reference please note the following status indicator of your Bluetooth LED.
If you are using WIDI Uhost or WIDI Bud Pro, please note that the USB LED indicator always shows green when powered correctly. It does not show the same operations as mentioned above. Please read the quick start guide for more details.
If reconnecting does not work please try to do a manual reset.
When your WIDI device is NOT powered on, press and hold the
button.
Power on the WIDI device until the green LED light flashes slowly for 3 times. Then release the button. The interface will manually reset to the factory default.
The device is in test mode, please use WIDI iOS or Android App connect your WIDI device and press "activate" on top of "factory reset".
The red LED is only shown in early firmware versions. After you've activated your WIDI device, please update your firmware right away.
For your reference, please note the different LED indicators for your Bluetooth connection (this is not the same as the USB LED indicator on WIDI Uhost and WIDI Bud Pro)
As WIDI devices pair automatically, it is likely that they've paired to each other instead of with your BLE MIDI device.
Please check if your WIDI indicator led lights up blue consistently.
Normally in this situation, your WIDI device already - automatically - connected to another unit or other BLE MIDI device.
Also, with iOS 16, your iOS device will automatically connect with WIDI devices it has connected with before.
This can cause a similar confusion.
Please switch off all BLE MIDI devices and switch on 1 WIDI device first and try again to pair it with your BLE MIDI device.
To bypass this automatic pairing there are two options:
For instance, when you try to pair with the onboard quick start guides of your mobile device, the two WIDI devices will connect to each other automatically.
As a result of this, you will not be able to connect them to your iOS device. As when WIDI devices are connected, they no longer advertise and are no longer available for making a connection.
You can use the WIDI App to set them "force peripheral", when that is set your WIDI device will not automatically pair but wait for manual connection with your iOS device.
Please read the quick start guides to understand how to operate your WIDI device and make connections.
When using WIDI Uhost as a USB host, it supports most plug-and-play ”class compliant" standard USB MIDI devices.
If your USB MIDI device matches one of the following conditions, it will not be compatible with WIDI Uhost:
If your USB MIDI device is class compliant and you experience problems when connecting it to your WIDI Uhost, please try the following first:
For more details please read the quick start guide. If you still experience challenges, please reach out via the support form.
When connecting WIDI Bud Pro or WIDI Uhost with your operating system, you first need to make sure your update both the USB and the Bluetooth firmware to the latest version via WIDI app for Android or iOS. After this you can select the MIDI port in your DAW exactly like you do for a USB MIDI interface.
Please refer to the connection procedures of the start guide for a more detailed description.
When you want to pair your WIDI device with your computer or mobile device keep in mind you have to set connect them manually. On the other side, WIDI devices pair automatically with other WIDI devices and other BLE MIDI controllers.
That is why, when you have multiple WIDI devices or standard BLE MIDI controllers powered on, you only see the WIDI device shortly in the menu of your operating system. That is because the pair automatically. And after they pair, they are no longer available for pairing with your operating system.
Simply make sure only one WIDI device is powered when pairing it with any operating system. And if you want to create groups, power them on one by one.
Once a WIDI has been connected to another, you will not be able to see it from other BLE MIDI device (such as your WIDI App). That is why when you want to connect WIDI device to WIDI app, you must set them one by one. Also you need to force them to the peripheral role prior to setting the group in the WIDI App.
If you do not do this the WIDI device is set to auto role by default. It will try to connect to another WIDI automatically. If this is the case, you have no way to see it from your iOS app because it was occupied by other connection.
When you set a group, that means the central is in "Auto role" with predefined peripheral address. It will only connect to predefined WIDI peripherals. Or switch itself into peripheral mode to connect to another central.
