Altronics K 9650 Manual de inicio rápido - Página 2

Navegue en línea o descargue pdf Manual de inicio rápido para Sistemas de control Altronics K 9650. Altronics K 9650 4 páginas. Arduino-compatible 12-button wallplate

Imprimir página

Altronics K 9650

10pin sockets are to be fitted to the Arduino shield footprint.

The 7-pin male header is fitted to the FTDI interface point

(P6), with the right angle male header fitted to the keypad

attach point (pins pointing to top of board), immediately

right of C2. Cut the supplied length of socket pins into lots

of 7,2,2&1 and fit these to the keypad breakout (7), relay

interface (top right, 2), LED interface (top left, 2) and piezo

(bottom right, 1).

Fit the relays now to complete assembly of the top of the

board.

Check the colour of the clear LEDs with a multimeter's di-

ode test function (Red and Green), then fit them to the posi-

tions immediately left of the LED interface on the underside

of the board. The flat of the LED should be pointed towards

the bottom of the board. It is important that these LEDs be

fitted so the body of the LED is hard up against the board.

It is a good idea to test the board at this stage, before

mounting it to the wall-plate. The IC comes pre-programmed

with the Arduino boot-loader and our example sketch. As a

heartbeat indicator, it blinks the D13 LED, so no additional

wiring is necessary.

Mount the IC into the socket and connect 6-24V into the

Vin-GND screw terminal. It is best to use a current limited

supply (or 9V battery) if available with a very low current

limit set. At Idle the circuit should draw a few milliamp. If

the LED doesn't flash at 0.5Hz (1s on, 1s off), double check

the components have been fitted in the correct place, and

the solder joints make proper contact between pad and leg.

K 9650

ARDUINO-COMPATIBLE

12-BUTTON WALLPLATE

I/O Interface is one of those things that almost every project needs. The

K9650 makes this easy, by integrating a 4x3 keypad, 2 1A relays, a piezo

transducer and LEDs into an Australian standard wall plate.

ARDUINO-COMPATIBLE 12-BUTTON WALLPLATE

,! 3 CB7F8-bjjaai!

Final Assembly

The LEDs on the bottom of the board will poke through the

wall-plate when mounted, potentially causing the corner of

the membrane keypad to lift. To remedy this, the board can

be mounted to the wall-plate and the top of the LED cut

flush with a sharp Stanley blade, or washers can be used to

stand the board off slightly. If using washers (not supplied),

make sure these are plastic types so they wont conduct if

touching the pads on the board.

Remove the adhesive protective layer from the back of the

keypad and fit it to the supplied wall-plate, with the cable

poking through the slot in the top of the plate. If not already

done, mount the board to the wall-plate using countersunk

M3 screws and nuts. Finally, plug the keypad into the right

angle header (The cable should not have any bends in it,

although it is offset), and the unit is ready to go.

Software

The micro controller comes pre-programmed with an ex-

ample program. The source can be downloaded from the

Altronics website, from the K9650 product page. If program-

ming via FTDI, select "Arduino Duemilanove or Diecimila" as

the board, and the FTDI's COM port as the port.

The program implements a gate access controller: Fitting a

wire link and resetting the unit allows loading of a code, up

to 50 digits, which is stored in EEPROM for subsequent use.

Upon entering the correct code (within the allowed time)

the unit will indicate using the LED, piezo and will trigger

the relay for 3.6s, allowing an attached door-stike time to let

someone through.

To use the program code supplied, wire up the green LED

to D10, red LED to D11, piezo to D12 and one of the relays

to D15 (A1).

To enter a code, fit a link between A0 (D14) and GND and

apply power to the unit (or press reset (S1) if power was ap-

plied before fitting link). This will put the unit into code pro-

gramming mode: Enter the desired code, one digit at a time.

Entering '*' will reset the code entry process while entering

'#' completes the code entry and resumes normal operation.

After '#' is pressed, the code will be stored in EEPROM and

the link can be removed. The unit will automatically resume

normal operation.

Attempting to enter the code will produce no feedback

while entering is in progress for security's sake. A time-out

exists as a means of reset, such that each new digit must be

entered within 1s of the last, or the unit will time-out the

code entry and reset it, indicating the time-out with the red

LED and piezo.

A successful code is indicated by an ascending tone on the

piezo, the green LED will flash, and the relay will trigger for

3.6s.

While this example shows one of the many potential used

for the kit, it should not be relied on to protect anything of

value: There's nothing stopping someone from simply un-

screwing the unit and wiring the relay pin into 5V. Fitting an

anti tamper switch, which would lock down power to the

unit upstream (possibly using a latching relay triggered by

the uC) could be used to make a relatively safe and secure

unit, but we'll leave that to the constructor to experiment

with.