4/5/2023 0 Comments Dock clock for galaxy s3One leg is soldered to either pin 5 or 4 and the other one to the switch Testing them showed between 362k-364k in the multimeter. In my case I had 330+15+22=367k which is just close enough to the 365 we were aiming for. So I had to use three different resitors in series to get that value, or at least a value close enough to that. Since I made a desk triggered dock I needed to get the resistor value up to 365k ohm (that's 365 000 ohm) which didnt exist in any one resistor in my collection. So you need to locate pins 1-5 in your circuit with a help from these picturesįor car mode the resistor value is 619k ohm and for desk mode it's 365k ohm (also apparently it's 1k ohm for S1 and either value for S2) The S3 phones will trigger different dock modes when they sense resistor of a particular value over the pin 4 and pin 5 (ground) If you want audio out you'll also need to find pin 2 and 3. the pins we are interested in are 4 and 5 I've posted a description to that shows what the different pins are used for. What you need to know are the different pins and their order in a micro USB connector Once the top was removed the inside revealed a really simple usb extension circuit (basically just a usb cable from one end to another as shown in the pic) and some weight to make the dock a bit more sturdy. (tip: use something softer than the dock plastic, like a hard guitar pick if you don't want to risk scratching it). Mine was not attached with any screws so all I needed to do was to find something thin to pray open the bottom part from the sides. If you feel it's fair and still want to do this then let's go!įirst thing you do is to open up your brand new dock to reveal the insides. first off: I take NO responsibilities what so ever if you try this and you happen to ruin your phone, injure yourself, destroy something, burn something down, blow something up, get sick, tired, hungry, dumped. This hack was actually made by my girlfriend and does not have 3.5mm audio output but I modded a dock before this with audio out so i'll be covering that part too. Which I believe gives you bigger buttons and voice interaction with the phone (and same thing here, can be changed and used to trigger other stuff if you know how).Īlthough this is a really easy hack some basic knowledge of electronics is highly recommended since you could potentially destroy your precious S3. Whilst in car mode, although not sure (cause I've never tried it since I don't have a car) I believe it triggers drive mode. But the default mode for desk dock is changing the lock screen to the night clock thus turning your phone to a table clock. For advanced users this task can be changed to whatever the user wants by using different apps like eg tasker. The Idea is that when you connect your phone into a dock it's suppose to recognize it and trigger a certain task. These docks are cheap and don't trigger anything and that's what we are gonna change. Part from these there's the fifth standard cheap usb dock you can order online which basically just acts like a stand for your phone with a usb connection. And then there the mother off all super dock that enables desk mode, audio out, HDMI out and usb OTG at the same time which basically turns your phone into a computer with usb ports. And then there's a media dock which is basically a desk or a car dock with a 3mm sound port for audio out that allows you to direct all sounds from your phone to through the sound port instead. As far as I know there's 5 different kinds of docks a car dock and desk dock, the two we are gonna focus on in this instructable which triggers car/desk mode. Well there are a couple of different docks out there on the market. Today I'm gonna show you how to turn a cheap $3 eBay Samsung Galaxy S3 (might work on Galaxy Note and S2 as well) usb dock to an expensive desk or car triggering USB dock with possibility to enable/disable those triggering modes.
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