Hi guys, I bring a new instructable for arduino, the control access with password, 4×4 keypad and a servo.
We will use the Password and Keypad librarie for arduino, besides using the servo library, but this project can also be modified by changing the servo, a motor reley or motor stepper, or any other ideas …
This project can be used in different cases, for doors, Servo action, etc..
Step 2: Preparing the keypad
Well, now we must put the resistors,remember the potion of the pins of the keypad.
Output pins of keypad:
1 pin = col 1
2 pin = col 2
3 pin = col 3
4 pin = col 4
5 pin = row 1
6 pin = row 2
7 pin = row 3
8 pin = row 4
(look at the second image)
Now they must put three 910 ohm resistors on pin 1, 2 and 3 of the keypad, then put in the arduino digital pins of the NEXT form:
pins keypad | pins arduino
—————————————
1 | 8
2 | 7
3 | 6
4 | 9
5 | 5
6 | 4
7 | 3
8 | 2
[box color=”#985D00″ bg=”#FFF8CB” font=”verdana” fontsize=”14 ” radius=”20 ” border=”#985D12″ float=”right” head=”Major Components in Project” headbg=”#FFEB70″ headcolor=”#985D00″]
Step 1: The parts for the project
We will need this parts for the proyect:
Arduino UNO or similar ($29.95)
http://www.sparkfun.com/products/11021
Servo motor – Large ($12.95)
http://www.sparkfun.com/products/9064
KEYPAD 4X4 (or similar) ($7.79)
http://www.ebay.com/itm/DATA-KEYPAD-4X4-BLACK-BLACK-KEYS-4-4-Switch-Key-x-/270347954381?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item3ef1fe68cd#ht_2720wt_1037
Proto Board ($9.58)
http://www.olimex.cl/product_info.php?currency=USD&products_id=170&product__name=Proto_Board_Bread_board
Breadborad jumper wire pack ($10.59)
http://www.olimex.cl/product_info.php?cPath=21_138&products_id=872&product__name=Breadborad_jumper_wire_pack
Four resistor of 910 ohm
One resistor of 1k
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For more detail: Access control with Arduino plus Keypad 4×4 plus Servo
