> **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

# IO Expansion HAT for Pi Zero/Zero W

**Type:** Product page · **SKU:** DFR0604 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/io-expansion-hat-for-pi-zero-zero-w.html ([markdown](https://core-electronics.com.au/io-expansion-hat-for-pi-zero-zero-w.html.md))

This DFRobot IO Expansion HAT provides Digital, Analog, I2C, PWM, UART and SPI port to meet all your needs. It is pretty small and perfectly suitable for Raspberry...

## Pricing

- **Price:** $18.10 (inc GST) — $16.45 AUD, exc GST
- **Quantity discounts:** 6+ $15.64 (exc GST) · 12+ $14.97 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 19 and Aug 24.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=DFR0604:1` (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/DFR0604:1.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

**Introduction**  This DFRobot IO Expansion HAT provides Digital, Analog, I2C, PWM, UART and SPI port to meet all your needs. It is pretty small and perfectly suitable for[ Raspberry Pi ](https://core-electronics.com.au/raspberry-pi.html?flag_category_id=184)Zero/Zero W. The board leads out the I/O ports on Raspberry Pi including IIC, UART, SPI and digital, among which the digital ports are led out via the GPIO16~GPIO25(BCM) of [Raspberry Pi,](https://core-electronics.com.au/raspberry-pi.html?flag_category_id=184) so these ports can be directly used. Besides, the PWM and Analog ports are led out through the on-board MCU STM32 that can communicate with [Raspberry Pi](https://core-electronics.com.au/raspberry-pi.html?flag_category_id=184) via IIC. So combing with our related libraries, users are able to conveniently use Raspberry Pi to control PWM output or read ADC input. ![DFR0604, Raspberry Pi ADC, Servo Driving, Expansion Hat, Raspberry Pi Hat.](https://image.dfrobot.com/image//data/DFR0604/English.png)

This expansion board supports 5V power supply and 3.3V sensor modules. Its PWM port can be powered by external power (6~12V) or Raspberry Pi (5V).

  **Features** - On-board MCU(STM32), provide 12 bit 8 channel ADC
- Multiple Servos Controlling
- Support PWM External Power Supply (6~12V)
- Support Raspberry Pi 2/3/4 Model B/B+ and Zero/ Zero W
 
  **Specification** - MCU: STM32F030
- Power Supply: Expansion Hat Power Voltage: 5V
 
 PWM External Power: 6~12V - Expansion Hat Port Output Voltage: 3.3V
- 22 Ports: 4 PWM ports, 4 Analog ports, 10 Digital ports, 1 SPI, 2 IIC ports, 1 UART
- Device Address: 0x10
- Dimension: 65\*30mm/2.56\*1.18”
 
  **Documents** 18. [Product wiki](https://wiki.dfrobot.com/I%2FO%20Expansion%20HAT%20for%20Pi%20zero%20V1.0%20%20SKU%3A%20DFR0604)
  **Parts List** - IO Expansion HAT for Pi Zero/Zero W x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/d/f/dfr0604-1.jpg)