Victoria, B.C. Canada




What is Pedal board?

[+]  Introduction
[+]  Objective @
[+]  Midi Specification @
[+]  Hardware Design
[+]  Software Design
[+]  Midi Programs
[+]  Features of our Midi Compatible Organ Pedal

An organ is a keyboard instrument that makes its sound by forcing air through wood or metal pipes. Most organ pipes are either long cylindrical metal tubes or elongated wooden boxes of rectangular cross-section. However, pedal board is the name of a large keyboard at the base of an electronic or pipe organ console that the organist plays with his/her feet. Organists usually use pedal boards to produce lower-octave notes for bass accompaniment; in pipe organ music, the pedals are usually what give the organ music its powerful foundation. Most pedal boards range in size from thirteen (one octave) to thirty-two (two and a half octaves) notes with keys from C1 to F3 or C1 to G3 respectively. A 32 notes pedal board keys is shown in figure below.

Pipe organs are most commonly found in churches, town halls, and art centres since early 80s. In order to replace them with midi compatible ones, not to mention the huge amount of work and time, it is also very expensive. Due to short period of ELEC 499A design project course, we have decided to make a midi interface only for the organ pedal that can translate the keynotes to midi information. With a simple and low cost circuit, our midi interface provides exactly same performance as any new midi compatible pedal. If possible, we would like to implement a midi interface for the organ pipe in the future. This report outlines the midi interface design and the efforts made to reduce old organ pipe replacement cost.


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