[ed. note - the following is as yet un-HTML'ed. More elegant graphics
will be added at a later date - JM]
How to Make Triggers for the D4 Drum Machine
============================================
By Mike Dalton (miked@plaza.ds.adp.com)
FIrst, there is no *one* correct method to do this. I will describe the
general method I used and then you can try this along with *your* own
variations.
The following information will allow you to make very inexpensive drum pads
that play nicely, and can be used as input triggers to an Alesis D4 drum
sounds rack module.
THe key here is very simple. If you want to get the essential info and start
playin' around with this idea. then do the following:
----------------------------------------------------
Part 1: The down and dirty "proof of concept"
1. Go to Radio Shack and buy 1 or more Piezo buzzers. Note that there are
*many* to choose from. THe one that I use is the one that costs $1.49 each
(as of 10/94).
THey are about the size of a U.S. quarter (you know, 25 cents..quarter)
and they have two (not three) wires, a red and a black one.
They are also enclosed in a black (incredibly rugged) plastic case.
Buy two or three of these to experiment with.
2. Select one of these to be your first experiment-ee. Remove the plastic case.
*HOW* you remove the plastic case is up to you. It can be a real pain.
*REMEMBER* you do *NOT* want to damage or bend the side of the black plastic
case without the hole. The side *with* the hole can literally be broken off
a bit at a time by the following: hold the whole thing firmly and taking a
small pair of needle nose pliers, bend the plastic case by grabbing around the
small whole.
Eventually you'll break enough away to allow you to see into the little black
case.
That brass-colored flat thing in the bottom is the buzzer. Continure breaking
the case away until all you have left is the flat brass colored buzzer with
its wires attached to the white-colored backside.
Note. If in the process of extracting the little buzzer from the black case you
pull a wire off, simply resolder it.
3. Now remember, this is the "down and dirty" set of instructions, so...
Attach a 1/4" phone plug to this thing, with the red lead to the "tip" and the
black wire to the "ring" on the 1/4" plug. (Note: you'd probably be well
advised to lengthen the wires a bit first)
4. Plug the whole dangling affair in to a D4 trigger jack and follow the
D4's trigger set-up instructions.
5. Tap the small little brass-colored side of the plugged-into-the-D4
buzzer, and lo and behold, DRUM SOUNDS!
Okay, enough, now you have proven your inventivness, maybe you are not Thomas
A. Edison but the "thrill of it all" has happened. OBVIOUSLY this will work,
but even more OBVIOUSLY you still need to build a drum pad assembly into which
you will bury this wonderful trigger 'thang'.
SO, the next set of instructions will describe what *I* have done thus far.
You will *most likely* come up with a better "recipe" (please email it to me
so *I* can benefit too!).
Part 2: How I made *my* triggers
--------------------------------
I went to several local hardware and plumbing supply houses and picked up a
bunch of C_H_E_A_P stuff. My theory was that something small and round a few
inches deep and wide has probably already been manufactured.
I picked up a 5" endcap and a 5" knock out plate for (you guessed it) 5" sewer pipes. Then I did this:
___________________________________________
|___________________________________________| <- 5" circular cut from linoleum
<@@@@@@layer of silicon caulking@@@@@@@>
--------------------------------- <- 4" circular thin metal disc
<@@@@@@layer of 5 minute epoxy @@@@@@>
########### <- piezo buzzer w/out case
| |
| |
==\ <%%%%layer of thin foam rubber%%%%> /==
===\____________________________________/=== <- 5" Knock-out plate
| |
| |
| |
|| | | ||
|| | | ||
|| | | ||
|| | ----(black)-------------
|| --(red)--------__/\________ <- RCA Jack
|| ||
||========================================||
^
|
5" diameter sewer PVC endcap
"Dalton's Drum Trigger Cross Section"
I experimented with differant things in the areas of glues to hold all the
pieces, and silicon, hard rubber, soft rubbers, foam rubber, etc. in the above
"recipe". Differant things gave differant bounce and velocity curves. Once I
had a recipe that worked for my needs, I Epoxy-glued several of these triggers
to drummers "cage" constructed from 1.25" PVC plumbing pipe and glued with PVC
glue.
I followed the D4 Manuals instructions for the elemination of false triggering
and mounted a piezo buzzer/trigger to the "cage" itself and fed it into the
D4. This procedure to eleminate false triggering along with the manuals
recommended adjustments to each pad completely eleminated false triggering.
This was a bit of fun to do. Now I can lay down a "boom-chop" rhythm track to
work the rest of a song out to, and when its finished I can go back, erase the
reference track, and lay down the whole drum kit "live-playing" with these
triggers. Cooool!
Lastly, I bought a Remo practice pad and put a
trigger-epoxied-to-a-thin-metal-plate (as shown above) in a slit made in the
middle of the foam under the head (take apart a Remo practice pad &
you'll "get it". I mounted a jack, wired the trigger, and voila! I
have a separate snare trigger in addition to the cage.
Closing Thoughts:
This was actually a great project. I think the Remo idea is as good as any,
but home-made triggers open up a lot of inexpensive options to the MIDI-fied
musician.
I realized that these little buzzer things are sensitive enough to play
with your fingertips. You guessed it. My next project is to build
a complete trigger-pad-set that is "finger playable".
Your mileage may vary...enjoy!
A much more important factor in the social movement than those already mentioned was the ever-increasing influence of women. This probably stood at the lowest point to which it has ever fallen, during the classic age of Greek life and thought. In the history of Thucydides, so far as it forms a connected series of events, four times only during a period of nearly seventy years does a woman cross the scene. In each instance her apparition only lasts for a moment. In three of the four instances she is a queen or a princess, and belongs either to the half-barbarous kingdoms of northern Hellas or to wholly barbarous Thrace. In the one remaining instance208— that of the woman who helps some of the trapped Thebans to make their escape from Plataea—while her deed of mercy will live for ever, her name is for ever lost.319 But no sooner did philosophy abandon physics for ethics and religion than the importance of those subjects to women was perceived, first by Socrates, and after him by Xenophon and Plato. Women are said to have attended Plato’s lectures disguised as men. Women formed part of the circle which gathered round Epicurus in his suburban retreat. Others aspired not only to learn but to teach. Arêtê, the daughter of Aristippus, handed on the Cyrenaic doctrine to her son, the younger Aristippus. Hipparchia, the wife of Crates the Cynic, earned a place among the representatives of his school. But all these were exceptions; some of them belonged to the class of Hetaerae; and philosophy, although it might address itself to them, remained unaffected by their influence. The case was widely different in Rome, where women were far more highly honoured than in Greece;320 and even if the prominent part assigned to them in the legendary history of the city be a proof, among others, of its untrustworthiness, still that such stories should be thought worth inventing and preserving is an indirect proof of the extent to which feminine influence prevailed. With the loss of political liberty, their importance, as always happens at such a conjuncture, was considerably increased. Under a personal government there is far more scope for intrigue than where law is king; and as intriguers women are at least the209 equals of men. Moreover, they profited fully by the levelling tendencies of the age. One great service of the imperial jurisconsults was to remove some of the disabilities under which women formerly suffered. According to the old law, they were placed under male guardianship through their whole life, but this restraint was first reduced to a legal fiction by compelling the guardian to do what they wished, and at last it was entirely abolished. Their powers both of inheritance and bequest were extended; they frequently possessed immense wealth; and their wealth was sometimes expended for purposes of public munificence. Their social freedom seems to have been unlimited, and they formed combinations among themselves which probably served to increase their general influence.321 The old religions of Greece and Italy were essentially oracular. While inculcating the existence of supernatural beings, and prescribing the modes according to which such beings were to be worshipped, they paid most attention to the interpretation of the signs by which either future events in general, or the consequences of particular actions, were supposed to be divinely revealed. 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Men who had learned to study the constant sequences of Nature for themselves, and to shape their conduct according to fixed principles of prudence or of justice, either thought it irreverent to trouble the god about questions on which they were competent to form an opinion for themselves, or did not choose to place a well-considered scheme at the mercy of his possibly interested responses. That such a revolution occurred about the middle of the fifth century B.C., seems proved by the great change of tone in reference to this subject which one perceives on passing from Aeschylus to Sophocles. That anyone should question the veracity of an oracle is a supposition which never crosses the mind of the elder dramatist. A knowledge of augury counts among the greatest benefits222 conferred by Prometheus on mankind, and the Titan brings Zeus himself to terms by his acquaintance with the secrets of destiny. Sophocles, on the other hand, evidently has to deal with a sceptical generation, despising prophecies and needing to be warned of the fearful consequences brought about by neglecting their injunctions. The stranger had a pleasant, round face, with eyes that twinkled in spite of the creases around them that showed worry. No wonder he was worried, Sandy thought: having deserted the craft they had foiled in its attempt to get the gems, the man had returned from some short foray to discover his craft replaced by another. “Thanks,” Dick retorted, without smiling. When they reached him, in the dying glow of the flashlight Dick trained on a body lying in a heap, they identified the man who had been warned by his gypsy fortune teller to “look out for a hidden enemy.” He was lying at full length in the mould and leaves. "But that is sport," she answered carelessly. On the retirement of Townshend, Walpole reigned supreme and without a rival in the Cabinet. Henry Pelham was made Secretary at War; Compton Earl of Wilmington Privy Seal. He left foreign affairs chiefly to Stanhope, now Lord Harrington, and to the Duke of Newcastle, impressing on them by all means to avoid quarrels with foreign Powers, and maintain the blessings of peace. With all the faults of Walpole, this was the praise of his political system, which system, on the meeting of Parliament in the spring of 1731, was violently attacked by Wyndham and Pulteney, on the plea that we were making ruinous treaties, and sacrificing British interests, in order to benefit Hanover, the eternal millstone round the neck of England. Pulteney and Bolingbroke carried the same attack into the pages of The Craftsman, but they failed to move Walpole, or to shake his power. 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If the varlets want to shrieve, they can go to the Abbey; and if they want to hear mass, a priest can come from Winchcombe. But never shall another of your meddling fraternity abide at Sudley while Roland de Boteler is its lord." "My lord," said Edith, in her defence, "this woman has sworn falsely. The medicine I gave was a sovereign remedy, if given as I ordered. Ten drops would have saved the child's life; but the contents of the phial destroyed it. The words I uttered were prayers for the life of the child. My children, and all who know me, can bear witness that I have a custom of asking His blessing upon all I take in hand. I raised my eyes towards heaven, and muttered words; but, my lord, they were words of prayer—and I looked up as I prayed, to the footstool of the Lord. But it is in vain to contend: the malice of the wicked will triumph, and Edith Holgrave, who even in thought never harmed one of God's creatures, must be sacrificed to cover the guilt, or hide the thoughtlessness of another." "Aye, Sir Treasurer, thou hast reason to sink thy head! Thy odious poll-tax has mingled vengeance—nay, blood—with the cry of the bond." HoME古一级毛片免费观看
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