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Cordless Screwdrivers are sold For Hundred's of dollors so,Let's Make Usb Powered Rechargeble Cordless Electric Screwdriver Power Tool From Micro Servo Under 6$ !

9g Micro Servo Motors have Decent Amount of Torque And Speed To Screw or unscrew Easily and its small size Fits in Small Spaces Quiet Easily ! I Used TP4056 And 18650 Lithium ion Battery For its Power Supply. So This Cordless Scredriver is charged with Micro USB Power . DPDT Switch is Configured in Such a Way That Direction of The servo Can Be Changed Clockwise or Anticlockwise. And Two LED's Will Help you In Dark Situations.

See The Video Here

[Play Video]

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Step 1: Get the Parts

Your Parts List

1. Power Bank Case

2. Lithium ion Cell

3. Tp4056 li-ion Charging Board

4. 9g Micro Servo Motor

5. Hex-nut Attachment 4mm

6. Tactile Push Button

7. Double Pole Double Throw (DPDT) Switch

Step 2: Modify the Servo

First You Need to Modify The servo so That it can rotate in 360 degree,

1.Open the 4 screws of servo .

2.Then remove the circuit and directly connect two wires to the motor .

3. Cut The Stopper Part Of The large Gear to Unlcok 360 degree rotation.

Step 3: Make Attachment Bit

1. Get Proper Hexnut attachment that fits the plastic srevo attachments

2. Cut The wings of the plastic attachment

3. Using a hammer slide the pastic connecter inside hexnut attachment

4.Use generous amount of superglue to connet bit to your modified servo

5. make sure that superglue doesn't mess up the gears inside , so spin the motor several times THIS IS THE MOST IMPROTANT STEP TAKE YOUR TIME AND DO IT CAREFULLY.

6 Also Don't Forget to stick a small piece of magnet to make your bit magnetic.

Step 4: Make Rechargeble Battery

1. Connect The TP4056 Properly To Li-ion Cell

2. Make Sure The Polarity are Connected Properly and fit the battery inside the case.

Step 5: Wire a DPDT Switch

A Double Pole Double Throw (DPDT) Switch Simply Reverse The Polarity With The Flick of a Switch So

1. Connect The DPDT Switch as Shown in The Figure.

2. Two Back to Back Connected Led's at the output will be helpful too.

Step 6: Enjoy !

You've made it
its that easy and useful and fun too now grab some bits and save the planet with your screwdriver !

https://youtu.be/W56Ege6rqBc

Please Share This Diy With Your Friends & Consider giving a like if this helped you Thanks.

<p>Great idea. But where can I get a servo motor that cost about 6$? On our local store the cheapest is around $50 each. </p>
<p>Take a look at <a href="http://hobbyking.com" rel="nofollow">HobbyKing.com</a> they are one of the most inexpensive retailers of hobby parts anywhere. They ship internationally and their prices are insanely reasonable.</p><p>Their low end micro servos start around $2.50/ea. But a micro servo isn't going to give you a lot of torque. You can buy standard size high-torque servos and still stay under the $6 mark.</p>
<p>https://www.rapidonline.com/rvfm-tower-pro-sg90-mini-servo-37-1330</p>
<p>Probably a micro servo from ebay</p><p>http://www.ebay.com/itm/New-SG90-9G-Micro-Motor-Servo-RC-Robot-Helicopter-Airplane-controls-for-Arm-/191711805901?hash=item2ca2ea01cd:g:hLgAAOSwhcJWF3yC</p>
<p>That link is dead, but this one will work: </p><p>http://www.ebay.com/sch/i.html?_odkw=SG90-9G-Micro-Motor-Servo-RC-Robot-Helicopter&amp;_osacat=0&amp;_from=R40&amp;_trksid=p2045573.m570.l1313.TR0.TRC0.H0.XMG90S+Micro+Metal+Gear+9g+Servo.TRS0&amp;_nkw=MG90S+Micro+Metal+Gear+9g+Servo&amp;_sacat=0</p>
<p>There's this amazing new place on the internet that sells stuff from all over the world.</p><p>It's called eBay...</p>
<p>I Saw this one on Amazon, about 10$...<br><br></p><p><a href="http://www.amazon.it/gp/product/B00HT1KYM2/ref=as_li_ss_tl?ie=UTF8&camp=3370&creative=24114&creativeASIN=B00HT1KYM2&linkCode=as2&tag=gutv04-21" rel="nofollow">AAS-311MG / 9g Micro Servo+ MG (Ball Bearing)</a></p>
Looks pretty nice if you use it for really small screws!
<p>Coming back to say that I really want to make something like this, I'll search for the components I need now :)</p>
<p>can the torque handle a screw on wood?</p>
<p>Are you asking because of the friction? Depends on the wood... Counter-sink it</p>
<p>So it is. It would be impossible for under $ 6. It is impossible and to think and where to buy things.Below 60 dollars it is understandable, but not practical.</p>
<p>Wouldn't it be easier to use a continous rotation servo?</p>
<p>one small error in step 5 - LEDs should be across A and D on the switch as it is marked in Fig 1 - i.e. they should be across the motor.</p>
<p>Excellent ! Cool Project !</p>
<p>Great project !!</p>
<p>Great idea! Also, check that the DPDT switch is 'Break-before-Make' and not 'Make-before-Break' type, otherwise you'll be putting a direct short across the battery when you flip the switch.</p>
That's a cool idea. Nicely done. might have a go at this when I get time
<p>Thanks, And You Can Also Connect Dc-Dc Converter To Adjust The Speed If You Want To.</p>
<p>Have a few fried servos to use for this!!</p><p>Very good for ho train parts, please instruct on how to add Dc-Dc converter and what unit to suggest.</p>
<p>great Im open celphone all day this gonna make me happy :D<br>(Im working fixing phone) </p>
<p>low speed low torque . i cant see any use of this. </p>
<p>good idea mate, but just wondering maybe in other country the cost to make it would be around $10</p>
<p>Looks great. probably not for those stuck screws but looks handy for and more comfortable than using hand.</p>
<p>For Stucked Screws , Larger Size Servos Can Be Used For Rock Solid Torque.</p>
Also make sure it has metal gears, you would easily strip the nylon gears.
Hello Friends Share this diy with your intrested friends,keep Making!
<p>You should have added LINKS for the parts!</p>
Superb Idea my friend.
Great electronics project!
<p>Thanks My Friend !</p>
<p>I LIKE IT, IT WOULD BE VERY HANDY? WELL DONE</p>
<p>awesome</p>
<p>cool idea</p>
<p>Looks great. probably not for those stuck screws but looks handy for and more comfortable than using hand.</p>
wooow...look a simple and nice idea
Awesome
Very innovative and uniqye
<p>Good idea!</p>
<p>Thanks.</p>

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