Insufficient power when connecting MIDI keyboard to iPad Air 2

I am connecting an AC Powered Keystation Pro 88 piano keyboard to an

iPad Air 2 with a 3rd party lightning-to-USB cable.  I get an error

message that "Cannot use device- the connected device requires too much

power".


This is puzzling since the "device" (e.g. my keyboard) is powered by AC (unless the internal power supply to the USB port is weak).


There is a new Apple "Lightning to USB3 Adapter" that has an extra USB port

that can be plugged into a powered USB hub or power source, intended to

keep the iPad charged while using the iPad in performance (nice).


Will using this Lightning to USB3 Adapter solve the ".. not enough power" problem ?  I read somewhere that the extra USB port on the Adapter only charges the iPad and does nothing

about the apparently underpowered USB port on my Keystation.


Any ideas ?


Bob

iPad Air 2 Wi-Fi

Posted on Sep 16, 2019 1:26 PM

Reply
8 replies

Sep 17, 2019 5:39 AM in response to MichelPM

Even though it is an older keyboard (but does have USB "B" MIDI output port), I have gotten it to connect to my iPad Air 2 but only by Bluetooth, so I believe it is compatible. (Although I don't think I could find any documentation that would confirm its iOS compatability in print). So... I still think its back to the power issue and not compatability with iPad.


BTW the Bluetooth connection I have successfully made is via a really nifty little piece of hardware I just learned about and purchased. Yamaha makes a Bluetooth transmitter in two versions: one is a dongle that plugs into an older 5 Pin MIDI OUT and the other is a similar dongle that plugs into a USB port of a MIDI controller. My iPad pairs WIRELESSLY to my keyboard via these Bluetooth signals coming from my keyboard. They cost just a little more than an Apple Lightning to USB3 connector and have the benefit of wireless connection AND no "low power" issues. Having said that I STILL want to connect my keyboard to my iPad with a wire in case for some reason the Yamaha wireless solution fails...


Bob

Sep 16, 2019 5:11 PM in response to bcarwell

It's the power that is the issue.

I have an older iPad Pro with the Lightning connector and I use a Korg Micro Key 76 key keyboard.

Without the internal battery power OR the external power supply to the keyboard, if I just plug the keyboard in using the Lightning to USB adapter with the Korg's standard USB cable alone, my iPad Pro states there is not enough power to power the keyboard, either.

This has absolutely nothing to do with MIDI, but with the power requirements of the key board and its power incompatibility with the iPad through the iPad’s Lightning connector.

That is the real issue/problem.

Sep 17, 2019 10:13 AM in response to MichelPM

Look at the reviews on Amazon on Google for other reviews. Almost nobody is reporting latency issues and mostly seems like 5ms or so. I received mine and had no noticeable latency whatever. Wireless allows for keeping iPod charged while playing via lightning port since previous Apple camera adapter kit cord occupied the iPod lightning port for connection to keyboard and left the iPad discharging while in use. The newest Lightning to USB3 adapter has fixed this with an extra USB port to run to a powered hub or other USB charger. But remains to be seen if it connects okay. I finally said the **** with it and ordered one, hoping if it won't connect I can return it.


Bob

Sep 16, 2019 4:26 PM in response to QuickPost

".. and connected accessories". I take this to mean that the adapter indeed could provide the necessary ooomph to avoid

the not enough power message due to being connected to my piano keyboard.


I cannot image that my keyboard would not be compatible with iPad. Its just the industry standard MIDI out protocol practiced by virtually every MIDI keyboard manufacturer. And its not a flaky Chinese keyboard- its a well-recognized M-Audio stage piano common in the industry. But who knows... The MIDI Gods can be very ornery at times...


Anyway, for $30, I guess I'm gonna give it a shot...


Thanks for the input,


All the best,


Bob

Sep 16, 2019 6:23 PM in response to MichelPM

I still don't quite understand though. My M-Audio Keystation stage piano is plugged into 120 V AC. So I would think its MIDI out port power is not relying upon (weak) power from the iPad via the MIDI connection from the iPad to the keyboard.


Instead I would think the power in the keyboard MIDI out port, not being derived from batteries or the iPad but rather the internal power supply in the piano, would be sufficient.


In any event, what is the solution ? Is my piano not going to be able to work with the iPad unless I use a Bluetooth or wireless connection ?


Or per my original question, if I use the new Lightning to USB3 connector that has an extra USB port to connect to a powered hub (genrally intended I think to charge the iPad while making music, will this overcome the weak power issue ?


Bob

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Insufficient power when connecting MIDI keyboard to iPad Air 2

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