Adding Wireless Charging To Any Phone

The wireless charging options available on flagship phones is a great feature, but most of us aren’t rocking the latest and greatest cellphone. [Daniel] came up with a great mod that adds wireless charging to just about every cellphone ever, at a very low price and a few bits and bobs ordered off eBay.

[Daniel] used a Palm Touchstone inductive charger – available for a few bucks on eBay – along with an inductive charging circuit from a Palm Pixi. This charging circuit was designed to complement the Touchstone charger, and is simple enough to wire up; all [Dan] needed to do was put the coil and charging circuit near the charge, and it output 5 Volts to charge any phone.

To get the power from the charging circuit into his phone’s battery, [Daniel] simply wired the output of the coil’s circuit to the USB in on the phone. The space inside his S2 was pretty tight but he was able to come up with two ways to install the charging circuit, for use with either the stock back cover or a third-party case.

For anyone with a soldering iron, it’s a quick bit of work to add wireless charging to any phone. We’re loving [Dan]’s solution, as the Palm gear he used is so readily available on eBay and junk drawers the world over.

Inductive Charger Inside The Case Of This IPhone 4s

iphone-4s-inductive-charger

This iPhone 4s is charging without a dock connector because [Tanv28] added inductive charging hardware inside the case.

The hack is not for the faint of heart. But if you’ve got a precision soldering iron and a stead hand we bet you can pull it off. It starts with disassembly to get at the cable that connects the circuit board to the dock connector. [Tanv28] solders fine enameled wire to pins 16, 23, 25, and 27. The other end of these wires are soldered to the guts from a Powermat inductive charging system. After the connections are made there’s not enough room under the back cover of the phone for this added bulk. But laminating a second plastic frame onto the assembly will correct for the 1mm difference in thickness. The clip after the break walks through the entire process.

You can see that [Tanv28] also built the charging station into a piece of furniture. We just saw a post last week that used this technique to add Powermat hardware to a shelf.

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Hiding An Inductive Charging Station Inside Furniture

inductive-charger-inside-furniture

[Tony] wanted to clean up his bedside table by getting rid of the cables used for charging his devices. He accomplished his goal by integrating an inductive charging station inside his furniture.

He chose to go with a product called Powermat. The base station for the device includes two inductive charging areas. [Tony] started by using a router to make a pocket in the underside of this shelf. He mentions that the remaining wood is only 2mm thick to allow for proper transmission. Before gluing the PCB in place he relocated the power jack so that it is still easy to get to. As you can see in the clip after the break, the system works just fine this way.

One note on the forums hosting this content. We must have loaded the thread three or four times when writing the feature and ended up locked out unless we registered. You can get around this by loading the link in a private/incognito browser.

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Hackaday Links: October 18, 2012

Capacitive touch plants

Here’s a proof of concept for using plants as a capacitive touch sensor. The sensor is simply a hunk of double-sided copper clad board attached to a microcontroller. But it seems to be able to sense what part of the plant is being touched. [Thanks Fabien]

Adding wireless charging to a Nokia N900

This hack is quite common, but it’s still fun to see what hardware is being outfitted with an inductive charger. This time it’s a Nokia N900 that’s ditching the charging cables.

Wii carrying suitcase from a plastic tackle box

This Wii carrying case (translated) looks great and cost just a few bucks. It started as a tackle box for carrying around your fishing lures. But a bit of creative cutting and there’s a place for everything.

Browser based schematic and board layout

There’s a new kid on the block when it comes to circuit design. Circuits.io offers in-brower schematic design and board artwork layout. [Thanks ADIDAIllinie (and a few others)]

Bender-o-lantern

Halloween rapidly approaches and we hope that [Tim’s] carving of Bender in a pumpkin will inspire you to send in your own Halloween projects.

Inductive Charging Going Mainstream

The recent announcement of Psyclone’s TouchCharge kit has us moderately excited. Though inductive charging has been used in electric toothbrushes for ages, we have yet to see it infiltrate the rest of our lives. The kit is a bit pricey at the moment, but it is a step in the right direction. Unfortunately, you have to have an adapter for your specific product and their selection is pretty limited right now. Why not make your own to power your devices?  Warning: it is written from the perspective of [Arnold Schwarzanegger].

Update: Is the TouchCharge kit inductive? It appears to require contacts to touch the base.