Category Archives: Arduino

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

Posted on 2013/04/12 by rt

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” … Continue reading →

Posted in Arduino, Electronics, MP, MP-2, Music equipment, Vortex | Leave a comment

Jeenode: Interference

Posted on 2012/12/16 by rt

Because of the previous post, I decided to  test a bit more. To see if I could physically move the board to reduce interference. So I connected the Arduino with the attached RFM12B radio module. The one using the Sparkfun … Continue reading →

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RFM12B: Dealing with radio interference

Posted on 2012/12/16 by rt

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 … Continue reading →

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

Posted on 2012/11/29 by rt

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 … Continue reading →

Posted in Arduino, MP, Pedal board | Tagged , | Leave a comment

EM-1: Energy Monitor – Completed Hardware

Posted on 2012/01/07 by rt

Christmas vacations are for having fun. I did have fun! I completed a project that had been sitting idle for some time: The Energy Monitor for the house/office. The project is described over a few other posts. Most of the … Continue reading →

Posted in Arduino, EM-1 | Tagged , , | 2 Comments

VC-1: Volume Control Beta

Posted on 2011/12/24 by rt

The VC-1 is. On the left, the Silonex Audiohm opto-couplers (OC) with the electronic drivers. it has been described here. On the right, the line-buffer/impedance-controller described there. It works as expected, using two digital pins on the Arduino micro-controller to … Continue reading →

Posted in Arduino, Electronics, Music equipment, VC-1 | Tagged , | 1 Comment

VC-1: More impedance control

Posted on 2011/11/06 by rt

In the previous post, I described the circuit that I’m using to emulate a potentiometer using a couple of opto-isolator (or opto-couplers?). There is one small problem with the circuit: the input impedance has to be quite low. If you … Continue reading →

Posted in Arduino, FCB1010, Pedal board, VC-1 | Tagged | 3 Comments

VC-1: Digital/Midi Volume Control

Posted on 2011/11/06 by rt

A user asked if I could design an FCB1010/PU-2 volume control. I love challenges… It took me weeks to get one working properly. The are two main parts to this: the analog side and the digital side. The analog side … Continue reading →

Posted in Arduino, FCB1010, Pedal board, PU-2, VC-1 | Tagged | 3 Comments

PU-2: SD card capacity

Posted on 2011/10/17 by rt

I have just written a new version of the software that is used to convert a .CSV file into a Sysex file that the PU-2 can process. This version uses the SD card. Preleminary tests show that 2000 midi commands … Continue reading →

Posted in Arduino, FCB1010, Pedal board, PU-2 | 2 Comments

SD Card reader: No Voltage required!

Posted on 2011/10/06 by rt

While testing a slight modification on the PU-2 prototype, I decided to test the current draw of the SD Card reader described in the previous post. I placed my multimeter in series with the 3.3 volt pin and measured 11 … Continue reading →

Posted in Arduino, FCB1010, Pedal board, PU-2 | 2 Comments