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Author Topic: Home made Simple ( and cheap) Speed Controller  (Read 21884 times)

rathikrishna

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Re: Home made Simple ( and cheap) Speed Controller
« Reply #25 on: December 22, 2010, 06:52:04 am »
Good morning ..and Thank you ,Respected Administrator...here is the answer for the question from Roadrunner...here we are back...i do not have any much good power motor with me.i have, but still all reworked by me..so, there must be a problem of belief..so for you, i dismantelled my drill, for motor, and you can see here.

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rathikrishna

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Re: Home made Simple ( and cheap) Speed Controller
« Reply #26 on: December 22, 2010, 06:52:04 am »
Good morning ..and Thank you ,Respected Administrator...here is the answer for the question from Roadrunner...here we are back...i do not have any much good power motor with me.i have, but still all reworked by me..so, there must be a problem of belief..so for you, i dismantelled my drill, for motor, and you can see here.

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rathikrishna

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Re: Home made Simple ( and cheap) Speed Controller
« Reply #27 on: December 22, 2010, 07:33:21 am »
Oh..sorry i lost my connection at cafe..now 15 more kms away to answer you..back again...here you can see its motor, its number is RS 550..and named as JUNDI, but its flange shows its a motor from Mabchi...
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rathikrishna

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Re: Home made Simple ( and cheap) Speed Controller
« Reply #28 on: December 22, 2010, 07:34:33 am »
here is the fan to give the load to motor...from an A/C blower...
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rathikrishna

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Re: Home made Simple ( and cheap) Speed Controller
« Reply #29 on: December 22, 2010, 07:35:43 am »
here is the same circuit and same preset...only difference is the wires...
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rathikrishna

  • Guest
Re: Home made Simple ( and cheap) Speed Controller
« Reply #30 on: December 22, 2010, 07:38:00 am »
as i do not have any good wires at home i turned to this burnt SMPS from a CPU...here it shows its capacity..but we know its only a theory..still it can hold more than 7 amps continuous...
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rathikrishna

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Re: Home made Simple ( and cheap) Speed Controller
« Reply #31 on: December 22, 2010, 07:39:47 am »
we never forget to add supressing capacitors with our motor, especially like this one can generate ample of back EMF, with SAW and Radio disturbances...
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rathikrishna

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Re: Home made Simple ( and cheap) Speed Controller
« Reply #32 on: December 22, 2010, 07:41:57 am »
and the set up is here..and its working...sure see an INSTRUCTIONAL VIDEO HERE....http://www.youtube.com/watch?v=9-HSQ1Ubeek
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rathikrishna

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Re: Home made Simple ( and cheap) Speed Controller
« Reply #33 on: December 22, 2010, 07:43:23 am »
sorry..here...
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rathikrishna

  • Guest
Re: Home made Simple ( and cheap) Speed Controller
« Reply #34 on: December 22, 2010, 07:49:41 am »
by this video you can see how nice its...and its fully based on basic circuit...still you can go for even more nice one with MOSFETs...i will post it later...here you can see a mere TIP 3055 is driving the whole load here...if we add two or three at same pattern, means bridge together, it can pull up to 30 Amps..cool...here you can see i retained the same heatsink as before...nothing is happened...


OK...now i have one more thing to tell you all...here i am posting even more exciting thing about my next set up...you all told me , that if we want to get a high power, we need a good big powerful motor...!!!  think again... here i show you a motor i got it from a junkyard, from the centre locking actuator of a car...actually it was based on 12 volts 3 amps.i reworked it for 5 volts 700 ma at load...
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rathikrishna

  • Guest
Re: Home made Simple ( and cheap) Speed Controller
« Reply #35 on: December 22, 2010, 07:52:36 am »
and here you can see a mechanism, like before but witha great difference...its actuated by a TOY R/C...here you can see a toy gearbox is fixed in such a way to turn the potentio meter in to either directions...via two pulleys and a rubber belt.
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rathikrishna

  • Guest
Re: Home made Simple ( and cheap) Speed Controller
« Reply #36 on: December 22, 2010, 07:57:47 am »
you can see the rec: here..based on 27.145 MHz. never feel inferior...it will gives us a range about 600 meters with a 5 meter antenna..(a piece of wire)...and here is the close ups for the sets up...the driven pulley is from a walkman idler while the driving pulley is a motor pulley from a taperecorder...a belt is used here , to drive..why..? yes we know a toy R/C can oly turn a motor in to two directions..so if we use a actuator arm, it will destroy our set ups...so here the belt will slips simply after the working perimeter...as a clutch..still powerful to hold the torque induced by the variable resistor...
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rathikrishna

  • Guest
Re: Home made Simple ( and cheap) Speed Controller
« Reply #37 on: December 22, 2010, 08:00:22 am »
and i used a toy gear box here to reduce the motor speed and to generate a good torque...you can see here how nice and simple it is....!!!
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rathikrishna

  • Guest
Re: Home made Simple ( and cheap) Speed Controller
« Reply #38 on: December 22, 2010, 08:08:39 am »
and the final set up here...you can see the instructional VIDEO HERE.....http://www.youtube.com/watch?v=sPelbpz7wBM   never forget to see it..you can see my motor set up is just working as to the big powerful motor as RS550 rated at 5.5 Amps..!!!!  and still it weighs more than 75 grams...but here you can see my motor is weighing only 25 grams after rework...but still it delivers the equal power as RS 550...and the current drainage is...merely..below 700 Mamps..!!!!  feel inferior..?  NOOO  i will post a video of my Hover craft, later, made out of expanded polystrene and with this motor...it works ever nicely...ommmmmppssssssss...so i request you all , because i know, there are many , with a great knowhow, to do goodies like these....i hope with this article i could inspire some friends...like all you inspired me...we never sit with layness...think about Write Brothers...and Dr Abdul kalam Azad...President Trueman..and Churchil...all they taught us to DREAM BIG..THINK BIG..AND TRY FOR IT..AND REALIZE IT....so friends..never forget to post all of your goodies here...

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rathikrishna

  • Guest
Re: Home made Simple ( and cheap) Speed Controller
« Reply #39 on: December 22, 2010, 08:17:08 am »
i have one more humble request...i posted here this set up, not to boast about me...or to show nothing...but to inspire all of my friends, as you all inspired me...i was in a lazy mood until i join this prestigious forum...i tried many at my home land..and all of them rejected my registration form...so i was even more desperate...so i got accidently this address from my elder brother Mr Krishna, and tried..then after joining, i saw amazing models and stuffs here...WWWOOOWWWW...all it are far beyond imagination...and lots of informative stuffs and lots of veterans...by then i shared many things from you all...many models..ideas..techs and tips...advices...suggestion..all once i thought impossible to overcome...now i am too happy...but still a request...i know some will make fun on me...because of my gender...here in my native people call me as  "VATTU PENNU" means VATTU means MAD and PENNU means GIRL...some call me as "BHRANTHI"  means again MAD WOMAN...some like "PENNAANU"..means half woman and half man...and at home my Maa call me as YAKSHI..means ghiest..when hearing this some time i feels funny but some time feel a deep pain..so i dont know why i born like this...
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rathikrishna

  • Guest
Re: Home made Simple ( and cheap) Speed Controller
« Reply #40 on: December 22, 2010, 08:24:03 am »
Friends..i hope you also try some thing like this..and sure must share with us all...waiting for good ideas...now my hands are trembling with fear...heart is pumping a lots...sweating..its 1:50 noon here..my Maa never knows about my trip to here..i got enough at morning for avoiding sleep at last night to shoot videos for you...now my cheeks and ears are swelled..by pinch...from Maa...if she caught me for this she will slice me in to 7 pieces and will throw in 7 seas...ohh..i have a drive back of 1 hour again...so i hope this article will help you all..like you all helped me...suggestions and corrections are welcome, because we can make our efforts even better...so i am leaving now...its too late...good night...
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Roadrunner

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Re: Home made Simple ( and cheap) Speed Controller
« Reply #41 on: December 22, 2010, 08:32:45 am »
Cracking job Rathi,  :-)) im gonna give this one a go some point in the near future
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rathikrishna

  • Guest
Re: Home made Simple ( and cheap) Speed Controller
« Reply #42 on: December 22, 2010, 08:37:31 am »
Sure Road runner..thank you..must post your ideas here..i have to go now..its too late..my Mom is calling me...i think i am caught up by her...sorry will be back...Merry Christmas and Happy new year...you all....
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david j

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Re: Home made Simple ( and cheap) Speed Controller
« Reply #43 on: December 22, 2010, 09:19:41 am »
with talent like you have you should be running INDIA as president, never feel inferior .we grown men and women are called because we have big boys toys. but who cares we do as we please it is ower choice.
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Perkasaman2

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Re: Home made Simple ( and cheap) Speed Controller
« Reply #44 on: December 23, 2010, 02:32:35 pm »
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PMK

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Re: Home made Simple ( and cheap) Speed Controller
« Reply #45 on: December 23, 2010, 03:18:51 pm »
Dear Rathikrishna,
Where I come from, a lady such as yourself, a lady who builds clever gadgets from discarded junk, and a lady who knows something about electronics, is regarded as a Goddess. You are indeed a huge inspiration to fellow members on this forum.

Just in case you are wondering, I am extremely handsome. I am also extremely rich.
I have also been known to exaggerate a bit.

What are you doing tonight? Do you fancy a date?
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barryfoote

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Re: Home made Simple ( and cheap) Speed Controller
« Reply #46 on: December 23, 2010, 04:04:03 pm »
Quote from: PMK on December 23, 2010, 03:18:51 pm
Dear Rathikrishna,
Where I come from, a lady such as yourself, a lady who builds clever gadgets from discarded junk, and a lady who knows something about electronics, is regarded as a Goddess. You are indeed a huge inspiration to fellow members on this forum.

Just in case you are wondering, I am extremely handsome. I am also extremely rich.
I have also been known to exaggerate a bit.

What are you doing tonight? Do you fancy a date?

Now now PMk, behave yourself!!!!! What do you mean....You are very handsome.......I've seen the photos!! %% %% %%
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PMK

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Re: Home made Simple ( and cheap) Speed Controller
« Reply #47 on: December 23, 2010, 04:21:07 pm »
Ssshhh!... don't let Rathi know that.
Besides, the guitar in the photo is not really a guitar - it's a sitar in disguise. Perhaps I could gain her affection with a rendition of Indian-type serenades.
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HS93 (RIP)

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Re: Home made Simple ( and cheap) Speed Controller
« Reply #48 on: December 23, 2010, 04:25:55 pm »
Quote from: PMK on December 23, 2010, 04:21:07 pm
Ssshhh!... don't let Rathi know that.
Besides, the guitar in the photo is not really a guitar - it's a sitar in disguise. Perhaps I could gain her affection with a rendition of Indian-type serenades.

Back are you  :} :} %%  leave my Favourite modeler alone

Peter  {-)
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rathikrishna

  • Guest
Re: Home made Simple ( and cheap) Speed Controller
« Reply #49 on: December 24, 2010, 02:04:30 pm »
Hi..hi...thank you all...and wish all Merry Chrismas and Happy new year...
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