Category: Electronics
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MIDI Experiments: Arduino as master
Arduino as a Midi master The previous two posts explained how standard MIDI can supply some current at 5 Volts if implemented according to the MIDI standards. In this post, I go a little further and explain how an Arduino, set up as a MIDI device, can power a second Arduino using a standard MIDI…
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MIDI experiments: Stealing power for an Arduino
In the previous post, I explained a simple circuit that will indicate if a MIDI OUT port can provide 5 Volts and a little bit of current between pin 2 (ground) and pin 4 (+5 Volts). Not all MIDI devices are wired that way. Some leave pin 2 disconnected (bad) while others connect it to chassis…
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MIDI experiments: A simple MIDI tester
While doing some research to build a simple MIDI tester, I started to study the “real world” MIDI electrical specifications out there. I also experimented with various MIDI equipment and measured some voltages. A simple MIDI tester MIDI specifications imply that a MIDI OUT circuit always provides +5 Volts, on pin 4, in reference to circuit ground,…
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About MIDI connections: Identifying the Midi pin numbers
A short article to help identify MIDI pin numbers in all those circuit drawings and photos on the internet.
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My ultimate versatile MIDI connection board: Versatility is the key
My Ultimate Versatile Midi Connection Board I work with Midi, a lot. I often have to plug equipment for testing instruments, circuits and interfaces. I often need to connect more than one device to a computer or micro-controller. So I decided to build the ultimate versatile MIDI connection board that I could modify, tweak, and install…
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MP-2 + MRe: Hacking the Alesis Vortex and using a Wireless Midi Transmitter
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.…
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MRe-2: A demo
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…
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Midi Wireless: The iRig Midi adapter and Audeonic’s MidiBridge
In a previous post, I explained how I successfully use a pair of XBee radios to exchange Midi information between a midi instrument and a computer. This post is about another wireless solutions for those who have an iPhone or iPad. The iRig Midi adapter The iRig Midi adapter fits the connector of any 30-pin…
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MRe-2: XBee Midi emitter
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…