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4x3 Button matrix keypad

Maximize your input possibilities with our 4x3 Button Matrix Keypad! Featuring numeric, star, and hash keys, this versatile keypad conserves IO while adding functionality to any project. Perfect for Makers looking to streamline their designs.

$6.30 AUD, inc GST

$5.73 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Fastest delivery: Tomorrow* Disclaimer:
For next-day delivery, the shipping address must be in the AusPost next-day network, eParcel Express must be selected, and the order must be placed before 2PM AEST Mon-Thurs excluding NSW Public Holidays. Orders may be delayed due to AusPost pickup timings and order verifications. eParcel Express is typically a 1-day service within the AusPost next-day network, though it is sometimes 2+ days.

Quantity Discounts:

5+ $5.61 (exc GST)
15+ $5.45 (exc GST)

Add lots of buttons with few IO, grab this numerical keypad (with star and hash keys), and add it to your next project!

The output of the keypad is handled with a 3-column, 4-row matrix output, scanning for shorts between the two to determine which button is pressed.

Features

Same layout as a phone keypad, make it your own with tape and markers!
M2 Mounting holes (46mm x 59mm)

Specifications

Dimensions: 51mm x 69mm x 10mm

Examples

Raspberry Pi Pico - Micropython

from machine import Pin
import utime

# Defining the GPIO connected to keypad rows and columns (ordering important)
row_list = [10, 15, 14, 12]  
col_list = [11, 9, 13]

for x in range(0, 4):
  row_list[x] = Pin(row_list[x], Pin.OUT)
  row_list[x].value(1)

for x in range(0 ,3):
  col_list[x] = Pin(col_list[x], Pin.IN, Pin.PULL_UP)

# Define the symbol associated with each key
key_list = [["1", "2", "3"],\
      ["4", "5", "6"],\
      ["7", "8", "9"],\
      ["*", "0", "#"]]

# Scan the keypad to detect keypresses
def keypad(col, row):
  for r in row:
    r.value(0)
    result = [col[0].value(), col[1].value(), col[2].value()]
    if min(result) == 0:
      key = key_list[int(row.index(r))][int(result.index(0))]
      r.value(1)
      return (key)
    r.value(1)

while True:
  key = keypad(col_list, row_list)
  if key != None:
    print("key: "+key)
    utime.sleep(0.3)

This product is listed in:

Components & Parts>Switches>Keypads

Product Comments

Exact shipping can be calculated on the view cart page (no login required).

Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).

We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

$3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
$7+ for Standard Post (typically 6+ business days, tracked)
$11+ for Express Post (typically 2+ business days, tracked)
Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.

International Orders - the following rates are for New Zealand and will vary for other countries:

$12+ for Pack and Track (3+ days, tracked)
$16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

40 Aruma Place
Cardiff
NSW, 2285
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

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