> **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

# Maker Hat Base - HAT & GPIO Extension for Raspberry Pi 400

**Type:** Product page · **SKU:** CE09482 · **Brand:** [Pimoroni](https://core-electronics.com.au/brands/pimoroni-australia) · **GTIN:** 769894023709
**Page:** https://core-electronics.com.au/maker-hat-base-hat-gpio-extension-for-raspberry-pi-400.html ([markdown](https://core-electronics.com.au/maker-hat-base-hat-gpio-extension-for-raspberry-pi-400.html.md))

Maker Hat Base extends out all the GPIOs of the Raspberry Pi 400 in a quick and simple way - be it using your favorite HAT or building your own simple...

## Pricing

- **Price:** $38.50 (inc GST) — $35.00 AUD, exc GST
- **Quantity discounts:** 10+ $33.60 (exc GST) · 25+ $32.55 (exc GST)

## Availability & dispatch

- Out of stock — the product page offers email notification when it returns.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=CE09482:1` (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/CE09482:1.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

Maker Hat Base extends out all the GPIOs of the Raspberry Pi 400 in a quick and simple way - be it using your favorite HAT or building your own simple circuit with jumper wires on the mini breadboard.

Since a ribbon cable is used for the connection, the Maker Hat Base is compatible with the Raspberry Pi 3 and Pi 4 too. This is especially useful when the Raspberry Pi is enclosed in a case and you want to extend its GPIOs out for HAT.

Each GPIO pin is clearly labelled and its status LED is definitely helpful during testing and troubleshooting. The onboard buzzer and push buttons will get you start coding in no time without the need of building your own circuit. Wanna connect to some external sensors/ modules? Worry not! The onboard Grove ports (GPIO, UART & I2C) are there for you.

[Check out the review of Maker Hat Base by the MagPi](https://magpi.raspberrypi.com/articles/review-maker-hat-base-for-raspberry-pi-400)

**Features**- Specially designed for Raspberry Pi 400.
- Compatible with Raspberry Pi 3 & 4.
- Extension pins for HAT.
- Clearly labelled GPIOs breakout for jumper wires.
- Status LEDs for each GPIOs.
- 1 x programmable buzzer.
- 4 x programmable push buttons.
- 3 x Grove ports (GPIO, UART & I2C) for external modules.
- Onboard 3.3V regulator provides extra current up to 800mA.

**Packing List**- 1 x Maker Hat Base
- 1 x Mini Breadboard (Random Color)
- 1 x 40 Ways Female to Female IDE cable (10cm)
- 1 x Flat Cable Clamper with Adhesive (60mm)
- 4 x Silicone Bumper
- 1 x PC104 2x20 Header Pin (Shipped after 25 November 2021)

**Resources**- [Datasheet](https://docs.google.com/document/d/12l4vzu-r3VRBCLkCsuM00KOYnMPnQw5HxdfxjA3p5E0/edit?usp=sharing)
- [CAD File](https://drive.google.com/file/d/1-QgPYwi-PCm4-nDJv4DANBdvUG8V7lQ8/view?usp=sharing)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/m/a/maker-hat-base-iso-800x800_1500x1500.jpg)