Introduction: CUT THE CORD: DIY Qi WIRELESS CHARGING PAD AND STAND.

Picture of CUT THE CORD: DIY Qi WIRELESS CHARGING PAD AND STAND.

I'm going to show you how I build my own wireless phone charging pad with stand and built-in battery, for totally wireless usage.

The wireless Charging Pad can be used separately as one unit or With its Modular Stand.

The Mobile phone can be placed vertically or horizontally on the stand, both orientation will allow phone to charge wireless, for the ease of use.

All wood Build.

This project is consist of two parts, which can be combined with each other.

  1. The Wireless Charging Pad.
  2. The Stand with built-in battery for the charging Pad.

Step 1:

Picture of

Step 2: Parts, Supplies, Tools

  • Qi Wireless Charger PCBA Circuit Board + Coil
  • Wood sheets strips (3mm thick)
  • Acrylic sheet (clear 3mm thick)
  • Handsaw
  • Hole saw (54mm and 76mm)
  • Drill
  • Drill bit (3mm)
  • Hot Glue
  • Epoxy Glue
  • Sanding Papers
  • Measuring tape
  • Soldering Iron
  • Wire Cutter
  • Tweezers
  • Power Bank Charger Board
  • 2x 18650 Battery
  • Micro USB 2.0 Cable
  • 3mm LED s (Blue) x 5
  • piezoelectric buzzer
  • Wood Glue
  • Masking tape
  • G-Clamp
  • Rubber Feet (x8)
  • Thin Rubber foam strips
  • Wood Wax

Step 3: Qi Wireless Charger PCBA Circuit Board + Coil

Picture of Qi Wireless Charger PCBA Circuit Board + Coil

I found this Qi charger set for $2 online.

Here is the link, if you want to buy.

Step 4: Finding the Maximum Working Distance

Picture of Finding the Maximum Working Distance

This is an important step, finding the maximum working distance because if the primary coil and the secondary coil are too far, the flux linkage will not occur and hence no power will be transferred.

Also the positioning of the coil is crucial.

Step 5: Getting the Wood Sheet Ready

Picture of Getting the Wood Sheet Ready

I've used plywood strips of ~100mm x ~35mm x ~3mm , All were uneven pieces.

Using wood glue, combine all the strips of plywood together. Size of end piece was ~100mm x ~100mm x ~3mm.

Step 6: Making the Inner Hole of the Pad

Picture of Making the Inner Hole of the Pad

First I marked the centre and using 3mm drill bit, drilled the hole at centre for the hole saw guiding bit. Then using 54mm hole saw

Step 7: Gluing the Acrylic Sheet.

Picture of Gluing the Acrylic Sheet.

I glued the clear 3mm Acrylic sheet in between two layers of plywood, using epoxy glue and clamped. After drying day long I removed the clamps. The edges were rough but that wont matter cause they were going to be cut.

Step 8: Ring of Sandwiched Wood and Acrylic.

Picture of Ring of Sandwiched Wood and Acrylic.

After the sandwiched Acrylic and Wood sheet dried properly, I drilled a 3mm guiding hole for the guiding bit of the hole saw in the centre, Then after cut a outer circle of 76mm using a hole saw. At last cut the inner circle using using the same 54mm hole saw. The final job was looking like a big ring of sandwiched plywood and clear acrylic in between. This ring is the main frame of the Pad.

Step 9: Gluing the Face With the Ring.

Picture of Gluing the Face With the Ring.

Cutting a Wood sheet round of 76mm diameter for the face of the pad. And then using wood glue, I glued the face with the sandwiched ring and clamped it using clamps for the proper bonding.

Step 10: Sanding and Polishing the Pad.

Picture of Sanding and Polishing the Pad.

Sanded the visible surface using sanding papers and also buffed the visible acrylic ring. Finally polished the visible outer Wood sheet using polish paper.

Step 11: Grooving the Pad for Micro-USB.

Picture of Grooving the Pad for Micro-USB.

Grooved bottom 2 layers in 12mm space parallel to the axis of the pad. This space is for the micro -USB cable.

Step 12: Removing the LED From the Circuit Board

Picture of Removing the LED From the Circuit Board

I removed the Led from the main Circuit board using desoldering wick. The led was common cathode and two anode pins.

Step 13: Adding the Coil and Circuit Board to the Pad.

Picture of Adding the Coil and Circuit Board to the Pad.

Using some Hot-Glue, locked the charging coil inside of the pad and soldered the coils ends to the circuit and for the circuit, I used double sided tape to keep them attached by making sure that the micro-USB pin faces towards the grooved section of the frame.

Step 14: Installing the LEDs.

Picture of Installing the LEDs.

Here, I've used 5, 3mm blue LEDs. After determine how they are going to face towards the acrylic on a small piece of plastic card, I glued 4 of them using hot-glued their legs. After connecting the LEDs in parallel connection. the remaining one led is soldered on the circuit itself and the combined ground of LEDs to the ground and the positive to the charging status pin of the circuit board.

The LEDs are little far from the Acrylic to spread even light.

Step 15: Adding a Buzzer.

Picture of Adding a Buzzer.

Bonus Point!! This circuit has a buzzer output. So I decided to Add one buzzer to the pad which will beep when the Phone is placed on pad.

For the buzzer I'v used a disk Piezoelectric Buzzer, and the connection were done on the BEEP and the GND point.

Step 16: Finishing the Charging Pad.

Picture of Finishing the Charging Pad.

For the bottom piece i cut a Wood sheet circle of 74mm using the hole saw. The hole which was drilled by the guiding bit of the hole saw, is used as the vent for the buzzer.

By gluing the the last bottom piece to the Pad, and then sanding it to an even surface with the rest of the Pad, I added rubber feet to the bottom for better grip.

Step 17: Finished Charging Pad

Picture of Finished Charging Pad

Using wood Wax I polished the visible surface, for natural look of the wood.

Step 18: The Front Part of the Stand.

Picture of The Front Part of the Stand.

I made a slot for the charging Pad using the same 74mm hole saw. this time I used the Outer portion so it gave me a ~1mm gap in between the slot and the charging pad.

First I plugged the Micro-USB cable inside the Charging pad and then putting the Charging pad in the slot, I determined the exact position of cable to where to be glued, After that using Epoxy Glue I glued the Cable And let it dried for a day.

Step 19: Completing the Front Part of the Stand.

Picture of Completing the Front Part of the Stand.

Used same size of Wood sheet for the back support of the Charging pad, and sides of 10mm width, Glued them together and Cutting the excess part from the bottom.

Step 20: Attaching the Front Piece With the Base.

Picture of Attaching the Front Piece With the Base.

Giving an Angle of inclination of 6 with respect to the base, Glued it using wood glue and giving back support to the same.

Step 21: The Resting Stands.

Picture of The Resting Stands.

By determining the Coil position in my phone as the reference, I marked the resting position of the Phone horizontally and vertically both.

Step 22: Power Management.

Picture of Power Management.

For the battery I've used 2x 18650 batteries which are connected in parallel to each other, and the battery terminals are connected to a powerbank circuit.

Function of the Powerbank Circuit:

  • Overcharge / Discharge protecion
  • Step-Up the voltage to 5v
  • Provides a USB out and Micro-USB in Port.
  • LED indicators for the battery Status.

Step 23: Attaching the Batteries and the Power Circuit to the Stand.

Picture of Attaching the Batteries and the Power Circuit to the Stand.

Using Hot-Glue, I glued the all the components to the base of the stand.

Step 24: Completing the Stand

Picture of Completing the Stand

Used A Wood sheet to cover the top of base and all the components, and grooved a Wood sheet as per the size of the circuit body and covering the back.

Step 25: Finishing Bits

Picture of Finishing Bits

Sanded all the visible surface using fine grit papers for even look.

Using thin rubber foam, I covered the resting stand for the grip and to prevent phone body from scratching.

Lastly added rubber feet to the bottom of the pad and used Wood Wax to polish the Wood surface.

Step 26: Finished Product.

Picture of Finished Product.

I Hope You Liked this Project.

THANK YOU!

Comments

LokiDarkFIre (author)2017-12-12

Seems neat and well detailed. One question what's the efficiency?

Maggie Shah (author)LokiDarkFIre2017-12-13

Approx. 65-75%, depending on the device manufacturer.

So 65-75% of the energy the charger is consuming reaches the device in the end.

The rest is lost in the inductive conversion process and the transfer between the two coils.

Kishor Prajapati (author)2017-12-11

Cool wireless charger

adamhe (author)2017-12-06

I think this is really cool. I love the fact that it can be used in a modular fashion. The only thing I'm wondering about is why bother adding the batteries? If you're going to charge the phone via a battery pack (because you're not in the office or at home) then wouldn't you just plug the battery pack into the phone? I guess I just don't understand why the extra stuff. But I really love the whole idea.

Maggie Shah (author)adamhe2017-12-07

The integrated battery pack is a smart addition: not only make it charging truly wireless, but also adds the necessary weight for a docking station

IJustLikeMakingThings (author)2017-11-29

This is really cool. Electrical stuff is definitely not my strong suit but I think you showed it well enough that I could do this.

I really Appreciate that ;)

AlyssaTallent (author)2017-12-01

Cool

RahulY45 (author)2017-11-29

Interning Built

LokiDarkFIre (author)2017-11-29

Great idea.

alan christo (author)2017-11-26

What if my phone has no wireless charging. Anyway that's a great project. I have voted for you in wireless contest. All the best

you can actually buy a micro usb to wireless thing. plenty on amazon. pop one in, put in a case, you are good to go :)

wow great idea. thanks :)

Maggie Shah (author)Stop MotionM2017-11-27

Yes and its easy to install.
you can check here, http://www.qiwireless.com/add-wireless-charging-device/

Maggie Shah (author)2017-11-27

Yes I've done the same thing, as you can see in the picture of charging pad the top most layer is too thin compared to the 3mm acrylic sheet.
Thank you for your review ;)

allenswan (author)2017-11-26

Will it charge through a typical plastic shell phone protector?

Maggie Shah (author)allenswan2017-11-27

Definitely it'll charge.

Israeld7 (author)2017-11-26

Very nice. I would like to see the same using a 3d printer with the stl files. Maybe I will give it a try.

Maggie Shah (author)Israeld72017-11-27

Its worth giving a try. and please share if you ever came up with your .stl files. ;). Thank you

Surajit Majumdar (author)2017-11-25

awesome project bro ;)

Thank you :)

3366carlos (author)2017-11-25

very nice. Will this work with any cell phone? I have a Samsung 4

Maggie Shah (author)3366carlos2017-11-27

The Samsung Galaxy S4 doesn't include wireless charging capabilities out of the box, but the official S back cover brings Qi-standard inductive charging to the device, in the form of a replacement back cover. In exchange for a little extra thickness on the phone, this lets you take advantage of wireless charging on your S4.

nqtronix (author)2017-11-24

I don't think I've seen a charging stand with a detachable qi charging pad, although it seems so obvious in hindsight! The integrated battery pack is a smart addition: not only make it charging truly wireless, but also adds the necessary weight for a docking station. Best luck in the contests :)

Maggie Shah (author)nqtronix2017-11-27

Thank you :)

babyskin (author)2017-11-24

Great work

Maggie Shah (author)babyskin2017-11-27

Thanks

snehna18 (author)2017-11-23

That's awesome built

Maggie Shah (author)snehna182017-11-27

Thank you

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