Small script to download your pinterest boards to your machine. Limit 50 pins per board... but you can download all pins from board using instruction inside ;)

sync_pins.js

var request = require("request");
var fs = require("fs");

var api_root = 'http://widgets.pinterest.com/v3/pidgets/boards/';
var sync_dir = './images', image_url, image_path, current_user_boards, current_user_name, board_dir;

var users = {
	timopheym : [
		'skatches',
		'home',
		'lamp',
		'shelf',
		'everyday-paint-inspiration'
	],
	maher97103 : [
		'andrea-joseph',
		'leonardo-da-vinci'
	]
};

// How to get pins list of the board
// Open board in browser 
// Load ALL pins
// Open console and make a breakpoint in the script something like _requestMoreItemsIfNeeded method
// Scroll a bit
// When breakpoint relesed
// execute
// JSON.stringify(this.children.map(function (p) { return p.data.id; }));
// And You'll get list of pins =)
// sync_pins('maher97103', 'leonardo-da-vinci', ["418412621608770303","418412621608770241","418412621608437553","418412621607942285","418412621607631847","418412621607426847","418412621607426844","418412621607426840","418412621607426836","418412621607426835","418412621607426832","418412621607426830","418412621607426823","418412621607426818","418412621607426815","418412621607377065","418412621607134667","418412621607134665","418412621607134658","418412621607108839","418412621607108836","418412621606947718","418412621606824228","418412621606733571","418412621606733567","418412621606733565","418412621606733562","418412621606668600","418412621606581540","418412621606415445","418412621606415427","418412621606415425","418412621606401348","418412621606260283","418412621606184571","418412621605866997","418412621605662597","418412621605475179","418412621605465295","418412621605465293","418412621605141624","418412621605141620","418412621605011334","418412621604877609","418412621604872082","418412621604854124","418412621604854117","418412621604854116","418412621604854114","418412621604854112","418412621604854110","418412621604854106","418412621604854100","418412621604854097","418412621604854091","418412621604854088","418412621604854081","418412621604854077","418412621604854070","418412621604854069","418412621604854066","418412621604783114","418412621604771154","418412621604723588","418412621604723584","418412621604611603","418412621604592937","418412621604575819","418412621604575818","418412621604575817","418412621604575814","418412621604575813","418412621604575812","418412621604575810","418412621604575808","418412621604575807","418412621604575806","418412621604548118","418412621604473931","418412621604455055","418412621604455053","418412621604455051","418412621604455047","418412621604455039","418412621604455038","418412621604455036","418412621604455034","418412621604455031","418412621604455030","418412621604455028","418412621604455026","418412621604455023","418412621604455021","418412621604433574","418412621604404197","418412621604397186","418412621604361265","418412621604361263","418412621604361260","418412621604361258","418412621604361252","418412621604361250","418412621604361249","418412621604361245","418412621604361240","418412621604357878","418412621604357873","418412621604357866","418412621604357864","418412621604249047","418412621604129816","418412621604052079","418412621604052073","418412621604052068","418412621604052060","418412621604052049","418412621604051888","418412621604042305","418412621603992527","418412621603992525","418412621603936311","418412621603936308","418412621603936306","418412621603920044","418412621603920041","418412621603920034","418412621603889201","418412621603889198","418412621603889195","418412621603818099","418412621603818093","418412621603817964","418412621603817963","418412621603677083","418412621603487856","418412621603269741","418412621603221493","418412621603162293","418412621603162283","418412621603162257","418412621603160138","418412621603144270","418412621603054299","418412621603054290","418412621602914603","418412621602872747","418412621602773841","418412621602705847","418412621602705843","418412621602705841","418412621602705839","418412621602705838","418412621602705836","418412621602705831","418412621602705827","418412621602705824","418412621602705822","418412621602641309","418412621602641308","418412621602626750","418412621602599168","418412621602546928","418412621602546925","418412621602546924","418412621602546921","418412621602546918","418412621602546917","418412621602546915","418412621602546914","418412621602546912","418412621602539677","418412621602469742","418412621602469739","418412621602469738","418412621602469733","418412621602469731","418412621602469729","418412621602469725","418412621602469723","418412621602469721","418412621602469719","418412621602469716","418412621602469713","418412621602469711","418412621602469710","418412621602469708","418412621602469704","418412621602469701","418412621602469696","418412621602469692","418412621602469429"]);
// After that you can call sync_pins('user_name', 'board_name', [list_of_pins]); //Folder have to be exist

sync_user('timopheym');

setTimeout(function(){
	sync_user('maher97103');
}, 10000)

setTimeout(function(){
	sync_pins('maher97103', 'leonardo-da-vinci', ["418412621608770303","418412621608770241","418412621608437553","418412621607942285","418412621607631847","418412621607426847","418412621607426844","418412621607426840","418412621607426836","418412621607426835","418412621607426832","418412621607426830","418412621607426823","418412621607426818","418412621607426815","418412621607377065","418412621607134667","418412621607134665","418412621607134658","418412621607108839","418412621607108836","418412621606947718","418412621606824228","418412621606733571","418412621606733567","418412621606733565","418412621606733562","418412621606668600","418412621606581540","418412621606415445","418412621606415427","418412621606415425","418412621606401348","418412621606260283","418412621606184571","418412621605866997","418412621605662597","418412621605475179","418412621605465295","418412621605465293","418412621605141624","418412621605141620","418412621605011334","418412621604877609","418412621604872082","418412621604854124","418412621604854117","418412621604854116","418412621604854114","418412621604854112","418412621604854110","418412621604854106","418412621604854100","418412621604854097","418412621604854091","418412621604854088","418412621604854081","418412621604854077","418412621604854070","418412621604854069","418412621604854066","418412621604783114","418412621604771154","418412621604723588","418412621604723584","418412621604611603","418412621604592937","418412621604575819","418412621604575818","418412621604575817","418412621604575814","418412621604575813","418412621604575812","418412621604575810","418412621604575808","418412621604575807","418412621604575806","418412621604548118","418412621604473931","418412621604455055","418412621604455053","418412621604455051","418412621604455047","418412621604455039","418412621604455038","418412621604455036","418412621604455034","418412621604455031","418412621604455030","418412621604455028","418412621604455026","418412621604455023","418412621604455021","418412621604433574","418412621604404197","418412621604397186","418412621604361265","418412621604361263","418412621604361260","418412621604361258","418412621604361252","418412621604361250","418412621604361249","418412621604361245","418412621604361240","418412621604357878","418412621604357873","418412621604357866","418412621604357864","418412621604249047","418412621604129816","418412621604052079","418412621604052073","418412621604052068","418412621604052060","418412621604052049","418412621604051888","418412621604042305","418412621603992527","418412621603992525","418412621603936311","418412621603936308","418412621603936306","418412621603920044","418412621603920041","418412621603920034","418412621603889201","418412621603889198","418412621603889195","418412621603818099","418412621603818093","418412621603817964","418412621603817963","418412621603677083","418412621603487856","418412621603269741","418412621603221493","418412621603162293","418412621603162283","418412621603162257","418412621603160138","418412621603144270","418412621603054299","418412621603054290","418412621602914603","418412621602872747","418412621602773841","418412621602705847","418412621602705843","418412621602705841","418412621602705839","418412621602705838","418412621602705836","418412621602705831","418412621602705827","418412621602705824","418412621602705822","418412621602641309","418412621602641308","418412621602626750","418412621602599168","418412621602546928","418412621602546925","418412621602546924","418412621602546921","418412621602546918","418412621602546917","418412621602546915","418412621602546914","418412621602546912","418412621602539677","418412621602469742","418412621602469739","418412621602469738","418412621602469733","418412621602469731","418412621602469729","418412621602469725","418412621602469723","418412621602469721","418412621602469719","418412621602469716","418412621602469713","418412621602469711","418412621602469710","418412621602469708","418412621602469704","418412621602469701","418412621602469696","418412621602469692","418412621602469429"]);
}, 20000)



function sync_user(user_name) {
	console.log('Syncing', user_name);
	current_user_name = user_name;
	current_user_boards = users[user_name];
	createFolderIfNotExist(sync_dir + '/' + user_name);
	current_user_boards.forEach(sync_board);
};

function createFolderIfNotExist(path) {
	if (!fs.existsSync(path)){
	    fs.mkdirSync(path);
	}	
}

var download = function(uri, filename){
  request.head(uri, function(err, res, body){
    request(uri).pipe(fs.createWriteStream(filename));
  });
};

function sync_pins(user, board, pins) {
	var i = 0, pin_ids = '', inter = setInterval(function(){
		if (!isNaN(pins[i])) {
			pin_ids += pins[i] + ',';	
		}		
		i++;
		if (i == pins.length) {
			clearInterval(inter);
			return;
		}
		if (!(i % 20) || i == pins.length) {
			console.log('http://widgets.pinterest.com/v3/pidgets/pins/info/?pin_ids=' + pin_ids.slice(0,-1))
			request({
			    url: 'http://widgets.pinterest.com/v3/pidgets/pins/info/?pin_ids=' + pin_ids.slice(0,-1),
			    json: true
			}, function (error, response, body) {
				body.data.forEach(function(pin) {
					image_url = pin.images['237x'].url;
		    		image_url = image_url.replace('237x', 'originals');
		    		image_path = sync_dir + '/' + user + '/' + board + '/' + pin.id + '.' + image_url.split('.').pop();	

		    		if (!fs.existsSync(image_path)) {
		    			setTimeout(download(image_url, image_path), 800);
		    			console.log('Saving', image_url)
		    		}
				})
			});
			pin_ids = '';			
		}
	}, 300)
}

function sync_board(board_name) {
	board_dir = sync_dir + '/' + current_user_name+ '/' + board_name
	createFolderIfNotExist(sync_dir + '/' + current_user_name + '/' + board_name);
	request({
	    url: api_root + current_user_name + '/' + board_name + '/pins',
	    json: true
	}, function (error, response, body) {
	    if (!error && response.statusCode === 200) {
	    	body.data.pins.forEach(function(pin){
	    		image_url = pin.images['237x'].url;
	    		image_url = image_url.replace('237x', 'originals');
	    		image_path = sync_dir + '/' + current_user_name + '/' + board_name + '/' + pin.id + '.' + image_url.split('.').pop();	

	    		if (!fs.existsSync(image_path)) {
	    			setTimeout(download(image_url, image_path), 500);
	    			console.log('Saving', image_url)
	    		}	    		
	        })
	    } else {
	    	console.log(error, response.statusCode)
	    }
	})
}