Instructables

WORLDS CHEAPEST VIRTUAL DRUM at $10 [ Rs.500] - using pc ( no drum module required )

Picture of WORLDS CHEAPEST VIRTUAL DRUM at $10 [ Rs.500] - using pc ( no drum module required )
DTX900K_nr.jpg
introducing the worlds cheapest electronic virtual drum :-

1. Construction under $10 [ 500 Indian rupees ]
2. Brain - PC using software- flexi music orchestra
3. interface device - uses pc keyboard to link software and hardware
4. quality - excellent since in uses the samples in wav. or mp3 format or any else provided be user ...i used Yamaha and Ronald samples to get the professional quality .
5. 4 drums + 4 cymbals + a kick ( can be increased ) with sensitivity control
6. sorry no velocity sensitivity
 
Remove these adsRemove these ads by Signing Up

Step 1: Parts list

Picture of parts list
all u need :

hardware + electronics + software

1. hardware :

1. wooden planks or plastic pipes to make a similar structure frame like ( if u want 4 +4 +1 ) :-
http://eqmag.com/article/yamaha-electronic-drum-set/Sept-2010/119075
2. hardboard (rough board ) plank cut into different diameter circles for drums and cymbals
i used :
drum : 7' snare two 10' toms and one 12' floor tom
cymbals: 5' bass cymbal two 12' crash one 10' hi-hat

3.
1.for attachments 8 suitable length stainless steel polished rods . out of which 4 are threaded out of which three are 1 inch and one for bass cymbal is 3 inch threaded
2. 4 nuts ( of size of the threads - i used no.)
4 voicers small + big , 4 springs + 4 chavi nuts
plz see image for corect idea
3. wooden pieces for bass pedal + suitable sized door hinges ( see image ) + 3 1 inch springs + an aluminium square + a not-bolt

2. electronics :-
1. 8 piezo transducer sensors here i get for 10rs. each ( 1 $ = 45/ rs. approx) [plastic / piezo any ]
2. 8 ic 741 op amps ( 5rs. each)
3. 40 * 40 PCB
4. 8 220k ohms resistors ( for feadback )
5. 8 4.7k presets(or pots) ( coarse) ( 2rs. each )
6. 8 470E presets ( fine ) ( 2rs. each )
8. connecting speaker wires ( 30 ft- doubled)
( 1.25 rs per feet )
9. last but not the least pc keyboard ( rs.200/- )
( or directly the IC if u get )
ALSO a female connector for the ic
i used a video game female connector the pins mismatched but i made it work randomly on the pins accessible

transistors can also be used here to amplifiy

3.software :-

as i mentioned

u need
1. flexi music orchestra
2. some professional quality wav. drum samples available widely

i attached both of them

tools :-
multimeter
solder gun + acc.
hot glue gun ( if u wish to glue the electronic joints)
super glue ( araldite , bondtite ..etc )
G- clamps
drill + 4mm drill bit
cutting saw etc.
1-40 of 53Next »
bdavid29 days ago

VIRTUAL DRUM PAD TO CONNECT AMPLIFIER WITHOUT COMPUTER....

bdavid29 days ago

DOES ANY STEP FOR USING THIS VIRTUAL DRUM PAD LIKE AS REAL DRUM PAD WITHOUT COMPUTER TO AMPLIFIER...

DOES ANY STEP OR INSTRUCTIONS FOR IT...

Cool, good info and DIY.... Thanks

joeyjerry6 months ago

Is this connection correct?

siddiq.JPG
sprasad26 months ago

i made it... sorta... used the keyboard chip.. but did not use the piezo's.. instead used small push button switch... tnkz for your idea

IMG_20140530_174541.jpgIMG_20140530_174550.jpg

Congrats. Do you have some video of your finished product? Also, what sort of push buttons did you used?

Is this drum set velocity sensitive i.e sounds louder when hit harder?
I think not, because keyboard respond just to connect 2 wire
Sbmsjr dvagala1 year ago
but my question is can we make this circuit without ic..........using transistor
iceng Sbmsjr1 year ago
A circuit using a transistor or two per amplifier with its attendant resistors and capacitors
is far more complex then one IC that has four individual amplifier / comparator units
in a single14 pin IC (Integrated Ciircuit)..
drmpre_ct.gif
Sbmsjr iceng1 year ago
So we can't amplify without IC ?
Is there any alternative way to make it velocity sensitive?
Sbmsjr1 year ago
Can i use piezo speaker on place of piezo transducer.......and can I connect Piezo direct to keyboard without any circuit......
wdowski2 years ago
Guys can someone add a proper schematics? I doubt it's gonna be hard for someone with tech knowledge. I don't have it. Can do the drums but need proper schematics. Thanks again.
siddiq4321 (author)  wdowski2 years ago
Hey every one....this one is a similar one....Except that u wont ness the resistors at input since our input is small...and the common grounded wire of all a ics should be to the common green pin on the keybaord ic......and the individual output of each ic will go to the individual input of keyboard ic....Please understand the basic idea...then u can easily link...best luck..:-)http://www.electronics.dit.ie/staff/tscarff/Music_technology/8way_drm2/drmpre_ct.gifReply
Hi Siddiq,
I'm having trouble mounting the plate, why not have much knowledge circuit, you could send me the board layout please?
After I mount the board you pordeira orintar me in connection with the keyboard?
I thank you for your help.

Thanks for the posts.
Hi Siddiq,
I'm having trouble mounting the plate, why not have much knowledge circuit, you could send me the board layout please?
After I mount the board you pordeira orintar me in connection with the keyboard?
I thank you for your help.

Thanks for the posts.
siddiq4321 (author)  wdowski2 years ago
Plz wait. For the new one....as i say experiment u r own way.....as i did it accidently...
For now... I can say it is a opamp as comparator...without any driving power....the feed back is 220 ohms fixed.....individual sensitivity is 470ohm trimmer i.e. Variable one....and group sensiivity is 4.7k variable...see the schematic and my completed circuit carefully....sorry
Hello Siddiq4321,
please help me
I am struggling to understand.
you could give me more instruction on how to assemble,
you have some tutorial video?
Please, I beg you
thyagolukas@yahoo.com.br
siddiq4321 (author)  Thiago Lucas2 years ago
Hey every one....this one is a similar one....
Except that u wont ness the resistors at input since our input is small...and the common grounded wire of all a ics should be to the common green pin on the keybaord ic......and the individual output of each ic will go to the individual input of keyboard ic....
Please understand the basic idea...then u can easily link...best luck..:-)
http://www.electronics.dit.ie/staff/tscarff/Music_technology/8way_drm2/drmpre_ct.gif
Hello Friend,
You got the most simplified circuit?
please help me also,
I'm having trouble understanding this.
siddiq4321 (author) 2 years ago
Hey every one....this one is a similar one....Except that u wont ness the resistors at input since our input is small...and the common grounded wire of all a ics should be to the common green pin on the keybaord ic......and the individual output of each ic will go to the individual input of keyboard ic....Please understand the basic idea...then u can easily link...best luck..:-)http://www.electronics.dit.ie/staff/tscarff/Music_technology/8way_drm2/drmpre_ct.gif
siddiq4321 (author) 2 years ago
Hey every one....this one is a similar one....Except that u wont ness the resistors at input since our input is small...and the common grounded wire of all a ics should be to the common green pin on the keybaord ic......and the individual output of each ic will go to the individual input of keyboard ic....Please understand the basic idea...then u can easily link...best luck..:-)
http://www.electronics.dit.ie/staff/tscarff/Music_technology/8way_drm2/drmpre_ct.gif
harryjone2 years ago
Thank you sir for this great instructable. I was just wondering if you could put bigger pictures of those schematics, I am new to this and can't take a step without copying it :D.
Thank you.
if you hover your mouse over the image, an I will appear in the top corner. Click this I, and it will take you to a larger image
siddiq4321 (author)  harryjone2 years ago
Well....try enlarging the image.....or open it into new window...
If not....reply with u r email id....i may mail u the pdf...:-)
mario34442 years ago
Can i also use this to connect piezos to my logitech usb gamepad controller .
dfariz2 years ago
Hi,

The other potentiometer , what is the value. I saw it like 5000 K ohm.
The one more thing, the component between the -ve and +ve line on the upper right hand side, what is it?

If instructables reduce the pic quality, can I be a member and get the high quality diagram?
dfariz2 years ago
Cannot see the diagram clearly.

Is it 470ohm or 470K ohm. 220 or 220K ohm. Can you post a clearer diagram. Thanks
siddiq4321 (author)  dfariz2 years ago
For now...its is 220 ohm and 470 ohm which we write as 220E
The pixils of the image r lowered by instructable
ficogiano3 years ago
I like it, but I don´t understand how to make the circuit 741. Can you do it again? Thanks from Argentina!
siddiq4321 (author)  ficogiano2 years ago
Yes t is very necessary. U can use trim pot / trimmers / potentiometers in place etc...
but i can use this? http://www.sourcingmap.es/smapimg/es/n/11c/1000-unidades-150v-16w-47k-ohm-axial-lleva-resistencias-pelicula-carbon-150862n.jpg
siddiq4321 (author)  ficogiano2 years ago
no ...
u can use this

http://www.digitaldandt.org/db/uploads/data_sheets_rev/Resistor_files/resistor4.jpg

or

http://upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Potentiometer.jpg/225px-Potentiometer.jpg
thanks
siddiq4321 (author)  ficogiano2 years ago
http://upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Potentiometer.jpg/225px-Potentiometer.jpg

or

http://www.digitaldandt.org/db/uploads/data_sheets_rev/Resistor_files/resistor4.jpg
siddiq4321 (author)  ficogiano2 years ago
See. It carefully.... Study the ic...opamp as comparator is being applied here..between terminals 2 and 3. ..or ur self thnink about a new idea...
what is 470E presets ( fine )? thanks you.
siddiq4321 (author)  ficogiano2 years ago
Its the 470 ohms trimm pot or the trimmer like the potentiometer. Any may work.
Fine is for fine sensitivity...
But is it necessary?
another question, Does the 4.7k preset has to be potentiometer necessarily? thanks
1-40 of 53Next »