First project, what components do I need? (Temp controlled fan)

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hi, first post here.

i don't yet have arduino board or parts thinking of buying starter kit alternatively parts needed project below.
i understand basic programming concepts not electricity.
however, learn doing things.

the purpose of post choosing suitable arduino board suitable components project below. no need advice me on programming part yet, plan learn use , program when components.


what have:
-a 3d-printer custom built enclosure (to prevent drafts , increase ambient temperature).
-a 12v pwm computer fan mounted through wall. (http://noctua.at/en/nf-f12-industrialppc-2000-pwm/specification)

what want do:
-read temp inside enclosure
-increase fan speed proportional temp
-change target temp cycling through 3 pre-set settings, (for example 25°/35°/45°) using simple button. (note not want set target temp via manual input rather have 3 profiles change between. match ambient temperature 3d-printing filament)
-display temp on 1 line of lcd , chosen profile on second line
-use wall outlet power source

what want with:
1. see problems thoughts above?
2. arduino board should choose?
3. parts need build this? lcd, tempsensor, pushbutton, way run fan @ 12v, else?


thank you

what trying has been covered many times in forum , on web; many similar examples around.

suggest start uno board allows fit lcd shield has buttons on , needs no wiring.
it prefer remote lcd can buy lcd , connect wires.

for sensor, use ds18b20, many around, ones pre wired in metal case better component.  need 4.7k 1/4w resistor complete circuit.

for pwm fan need simple transistor or logic level  mosfet, again simple seach of forum has many examples / diagrams.

also buy breadboard , bundle of jumper wires making , other circuits develop.

links typical parts -
http://www.ebay.co.uk/itm/1pcs-ds18b20-ds18s20-arduino-sensor-waterproof-digital-thermal-probe-wst/391392795480?_trksid=p2045573.c100505.m3226&_trkparms=aid%3d555014%26algo%3dpl.default%26ao%3d1%26asc%3d20151005190540%26meid%3d2f64984badd1499c9ef125bcb3ed7bf6%26pid%3d100505%26rk%3d1%26rkt%3d1%26

http://www.ebay.co.uk/itm/lcd1602-arduino-compatible-lcd-keypad-shield-2-x-16-character-display-chip-150-/371581790642?hash=item56840029b2:g:rs8aaoswmmbvnwkb

http://www.ebay.co.uk/itm/breadboard-project-starter-kit-with-power-supply-and-jumper-wires-/121986214328?var=&hash=item1c66f1e9b8:m:mzlcvucokln4xlno9dtlodq

http://www.instructables.com/id/use-arduino-with-tip120-transistor-to-control-moto/


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