Basically this modification includes swappable front panel which incorporates power-bank controller 3.6V battery, voltage converter, CME Widi Core Wireless Bluetooth module and additional circuit to accommodate signal received from Linnstruments MIDI output port. There is three way switch - position A disconnect battery completely, position B allows charging (only battery connected), position C all is connected. There is additional mini switch on the bottom, which cuts off power from CME Widi Core and also interrupts connection between Linnstrument MIDI output port and custom optoisolator module so that Linnstrument can safely be used with regular MIDI DIN cable.
A short demo video is available on youtube - https://youtu.be/lbjgunqAsZU
There are some issues though - iPad sometimes loses connection, disconnects from WidiCore - I'm not quite sure why this happens. Also when I try to charge when power switch is in position C (everything is powered) powerbank restarts so operation is not possible - I guess this could be because power bank can't provide enough current to Linnstrument while charging.
In summary it is great for playing around when you have some spontaneous idea in mind and when rehearsing, but for critical applications such as playing live I would still recommend using wired DIN MIDI connection.
Here is my basic design diagramm
Full description is available in pdf format.
http://www.futurtone.com/downloads/Linn ... iption.pdf
So it is doable - have fun designing and building your own wireless solution
but bear in mind - Any custom modification of product voids warranty!
Any damage to your product when modifying it is your own risk!
