Practical Usage

Category: MP

  • MP-2 + MRe: Hacking the Alesis Vortex and using a Wireless Midi Transmitter

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    rt
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    A two-project merge! The Alesis Vortex needed a bit more… controls! So I decided to add a few sensors that would give me greater flexibility when playing. The Vortex is already quite capable, but my left hand was not “used” enough. Sure, there is a touch strip and a pitch-bend wheel at my finger tips.…

  • MRe-2: A demo

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    rt
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    I have decided to try the MRe-2 in a real setting. So I hooked up my keyboard and recorded a demo. It was done using Ableton Live 9. The trick was to setup 2 midi loops (using clips). The first one is used to loop the riff that plays after the intro. I had to…

  • MRe-2: XBee Midi emitter

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    In the previous post, I  explained that I temporarily abandoned trying to use the RFM12B radio transceiver to exchange Midi information between two devices. This post explains how I successfully used the XBee radio transceiver to achieve sending information between a Midi source and a computer. The XBee radio comes in many different versions. The…

  • RFM12B: Dealing with radio interference

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    rt
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    This is a screenshot from the serial monitor of a Jeenode (Arduino compatible) connected to my computer. It runs a program that will listen to incoming radio messages through its RFM12B radio transceiver. In this window, you can clearly see too lines that start with “OK”. These are real messages coming from my EM-1 Energy Monitor.…

  • MP-1: Improving reliability with ACK and adding a PANIC! button

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    rt
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    Since the Jeenode’s RFM12B is a bit slow (transceiving at 49.2K bps) and midi is a bit slower at 31250 bps, the processor doesn’t have much time to process all the traffic. Keep in mind that the Jeenode has to be able to receive MIDI messages on the serial port, receive incoming wireless transmissions through…

  • MP-1: Adding a small display… and a rotary encoder

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    rt
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    A display is necessary to be able to really augment the functionalities of the MP-1. A couple of LEDs blinking is fine for Power-ON and Battery status, but a small display adds much more flexibility. Since one version of the test setup is using a Jeenode, I will be using a Jeelab display with the Jeelab…

  • MP-1: Wireless testing and midi commands

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    rt
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    The MP-1 will include a wireless interface. I decided to test the possibilities of the technology I chose. Mainly, I will be using an RFM12B transceiver to exchange data between components. So, I designed a very simple interface using off-the-shelf parts: An Arduino and an RFM12B radio. Because I wanted to test MIDI data trasmission…

  • Re-thinking the PU-2 interface: long live the MP-1

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    rt
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    A lot of work was done on the PU-2 over the last many months by Emanuele and I. More specifically, we wrote hundreds of line of code to make the FCB1010 work with Banks of Stompbox mode midi commands. This is the main feature of the next version of the firmware. At the same time,…