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As long as your DSLR uses IR for its remote trigger function, you can use your phone (assuming it has IR). I use this app; keep in mind that you need to choose your camera brand (and possibly the hardware type; change it to "built-in IR blaster" if it's not already that) in the settings before you use it as a remote. You can even make it so that it'll send a trigger signal when it detects a raise/level of light or volume, or set a delay/timer.
Cool, I'll try it out. I haven't installed it yet but there seem to be apps that will fire the IR blaster at fixed intervals, e.g. [link]
If you have an Android phone or tablet (possibly iOS as well) there are apps such as DSLR Remote that will do this for you, you just need to plug it into the camera or, in the case of the 70D, use the WiFi. I've done successful timelapses with interval photos using an app like this on my Android tablet with my Canon 5D Mark II. Here's the link for DSLR Remote on Android [link]
I used this one, but it was kind of a hassle, and it might not work at all depending on your phone/camera combo. I ended up just buying an actual remote meant for DSLR's on amazon since it was only like 8 bucks and I wouldn't have to deal with switching phones and roms.
It's 110% worth trying!
If you can plug your D3200 into your laptop, you can control it via the program DigiCamControl. It's free, and has a basic "astro" interface, which I use regularly.
Also, you can trigger your D3200 if you have a smartphone using an application like DSLR Remote (this one is Android). It just has to be in the shooting mode where it's listening for an external signal, but no extra equipment is necessary.
BTW, I shoot with a stock D3300.
If you're in a pinch, some of the flagship Samsung and HTC phones have built-in IR blasters (there are probably others that have them, but none that I explicitly know of). They're meant for controlling TVs and appliances, but there are apps that let you use them as remote shutters for DSLRs. IR's not as good as RF since you need to be in a line of sight, but it definitely works well if nothing else does. I'm not telling you to go out and get one of those phones, I'm just mentioning this for those who already have one.
In case you're curious, I have a Samsung Galaxy S4 and Nikon D3200; I used this app and it works perfectly every time.
I don't think anyone has bothered to make support since it's tedious to use at best since the phone has to be facing the camera. Triggertrap makes a device with pebble support though: [link]
There's a remote app for phones that supports ir though, I don't know if you can make it work through pebble.
I have used this app with my G3 and it works more than well enough. It tells me it has compatibility with my old G2 I don't use anymore so you may want to give that a shot.
I have a Nikon D3300 and I used "DSLR Remote" from bitshift on my Galaxy Note.
I don't think it worth it. It's not a router... If you have android, try this: [link]
Works for me with the D5500 and a Galaxy s5.
This one works for me on my Canon Rebel SL1 [link]
If you want to use your Android phone (provided that it has IR functionality), you can use DSLR Remote.
Works pretty well on my D90 using my phone as remote. Also (and unrelated) you can get yourself a USB OTG cable for a couple bucks and hook your phone with a miniUSB cable to the camera. You can use then DSLR Dashboard to control awesome functions (takes some finicking) to take pre-programmed exposure-and-focus-varying time-lapses (but here it would be permanently hooked to the camera while it operates).
Maybe something like DSLR Remote works? At least it's worth a try.