> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Button Pad 2x2 - Breakout PCB

**Type:** Product page · **SKU:** COM-09277 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/button-pad-2x2-breakout-pcb.html ([markdown](https://core-electronics.com.au/button-pad-2x2-breakout-pcb.html.md))

This a simple breakout board for the button pads. Each LED and button is brought out to the side connectors. The connectors are soldered to the back side of the PCB. We recommend trimming the connector leads on the button side as short as possible to reduce the deflection of the pad.

## Pricing

- **Price:** $12.30 (inc GST) — $11.18 AUD, exc GST
- **Quantity discounts:** 5+ $10.85 (exc GST) · 25+ $10.62 (exc GST) · 100+ $10.17 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 31 and Sep 04.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=COM-09277:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/COM-09277:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

This a simple breakout board for the button pads. Each LED and button is brought out to the side connectors. The connectors are soldered to the back side of the PCB. Sparkfun recommend trimming the connector leads on the button side as short as possible to reduce the deflection of the pad.

 Now with footprints for diodes! Use the super cheap 1N4148 through hole diodes. These can be used to isolate the switches to make for a bit easier decoding.

**Documents:**

- [Schematic](https://core-electronics.com.au/attachments/localcontent/2x2Button_Pad_Breakout-v01_17355152598.pdf)
- [Eagle Files](https://core-electronics.com.au/attachments/localcontent/2x2Button_Pad_Breakout-v01Eagle_29697daf6f7.zip)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/b/u/button_pad_2x2_-_breakout_pcb__com-09277__01.jpg)