Adding Inductive Charging To An Android Tablet

August 16, 2012 by Mike Szczys 8 Comments

This is a Gemei G9T, a 9.7″ Tablet running Android 4.0. [Carnivore] shows us how to modify it to use inductive charging. The inductive charging hardware is taken from a Palm device (this uses the Touchstone charging hardware seen in several other hacks). It’s easy to interface with the tablet’s electronics, but physically placing the coil and magnets is another story.

The video after the break gives you a full walk-through of the process. He starts by removing the screws and prying the case off of the tablet. From there [Carnivore] shows how to carefully remove the coil, circuit board, shielding, and magnets from a Palm back plate. The magnets are the first to be positioned on the tablet’s back plate. The metal is too thick for them to hold well so he uses a Dremel to grind away just enough material for a strong connection. Unfortunately the metal will shield the magnetic fields the coil needs to work so he cuts a hole in the case the same size as that coil. The area is covered in liquid electrical tape to prevent shorts, and everything is taped in place. Two jumper wires connected from the coil’s circuit board to the 5V charging input are all it takes to finish up the hack.

Continue reading “Adding Inductive Charging To An Android Tablet” →

WiFi On A Sprint Pixi

July 28, 2010 by Mike Szczys 21 Comments

[youtube=http://www.youtube.com/watch?v=kpFYoT2lYU0]

The Sprint version of the Palm Pixi doesn’t have a WiFi option but the Verizon version (called the Palm Pixi Plus) does. The hardware is almost the same and [Gitit20] figured out how to do some hardware swapping to add WiFi. The radio board inside the phone is fairly easy to remove. Close inspection of the Sprint radio board shows some solder pads where a WiFi chip would go. The Verizon version has this chip, and moving that radio board into the Sprint phone will enable WiFi. This is strictly a hardware hack as the device identification (IMEA) is paired with the motherboard and not the radio board.

Now we want to see someone source that WiFi chip, solder onto the board, and enable it within the OS so that we don’t need a donor phone to make this work.

[Thanks Juan]

Inductive Cellphone Charging Without Voiding Warranty

July 28, 2010 by Mike Szczys 26 Comments

[Derek Hughes] wanted to use inductive charging on his cellphone without voiding the warranty. He picked up a Pixi charging backplate meant for a Palm Pre and scavenged the coil and regulator circuitry from it. To make the electrical connection with his HTC HD2 he removed the mini-USB plug from a charging cable and connected it with 30 gauge wire. The whole package will fit beneath the back plate for use with a Touchstone charger (as we’ve seen with the HTC Evo) but there was one problem. The metal backplate from the HD2 interferes with the inductive charging. For now he’s using tape to hold everything together while searching for a plastic case replacement.

He walks you through the hack in the video after the break. We’re usually not worried about voiding warranties, but a phone like this takes a lot of abuse and having warranty protection or even a service agreement isn’t a bad idea. Continue reading “Inductive Cellphone Charging Without Voiding Warranty” →

Inductive Charging For The HTC Evo

June 21, 2010 by Mike Szczys 30 Comments

[Danny] added wireless charging to his HTC Evo. The hard work was already done for him by Palm, it was just a matter of adding that hardware to his phone. A Touchstone induction charging kit for the Palm Pre will cost you just over $40 for the base station and a replacement back cover. [Danny’s] method removes the induction coil from that cover a relocates inside the case of the Evo. He routes two wires around the battery and solders them to positive and ground connections on the board. Once it’s back together the device draws power without any wires.

[Thanks Matt]

Reuse That PDA As A WRT Terminal

May 7, 2010 by Mike Szczys 21 Comments

[Michu] used his old Palm IIIc to make a serial interface for his OpenWRT router. It’s a matter of cracking open both the router and the Palm device, then connecting the TTL lines from the router to the MAX 3386e level converter chip inside the Palm. From there, Pocketterm can connect to the router’s serial terminal.

A lot of us have old electronics lying around that work perfectly well. It’s nice to find hacks that make them useful again.

[Thanks Isama]

NES Lovers Grew Up And Now They’re Coding For Palm

January 27, 2010 by Mike Szczys 14 Comments

In case you missed it back in June, the Palm Pre was rooted by extracting the Root ROM from a Palm tool used to reset a device with damaged software. A lot has been learned from examining the code inside that ROM but we’re most amused by one thing in particular. If you grew up in the 80’s there’s a pretty good chance you know the Konami Code by heart. So did the developers of WebOS, the firmware running on the Palm Pre. By inputting the familiar (UpUpDownDownLeftRightLeftRightBA) set of gestures the handset enters Developer mode for connection to the SDK which was leaked last summer but is now in open release.

Palm Pre GPS Tweets

August 25, 2009 by Caleb Kraft 15 Comments

[youtube=http://www.youtube.com/watch?v=ZnlM8UJUtOQ]

[Mike] sent in this project he’s been working on. He has posted instructions on how to get your Palm Pre to tweet its GPS coordinates at regular intervals. It does require that you have Linux installed on your Pre, but that’s not that big of an issue as he has a tutorial for that too. Getting the tweet to happen involves setting up a custom PHP file that sends the tweet, then a cron job to get it to run on a schedule. He mentions this could be useful for finding a lost phone as well as keeping track of loved ones. We would like to see him add a script to do similar with a picture. Maybe take a picture and upload it every time a call is placed?