> **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

# Dreamer Nano V4.0 (Arduino Leonardo Compatible)

**Type:** Product page · **SKU:** DFR0213 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/dreamer-nano-v4-0-arduino-leonardo-compatible.html ([markdown](https://core-electronics.com.au/dreamer-nano-v4-0-arduino-leonardo-compatible.html.md))

The Dreamer Nano V4.0 is a surface mount breadboard embedded version of the ATMEGA 32U4 with integrated Micro USB. It has everything that Arduino Leonardo has (electrically).Physically, it is just missing power jack to save space.

## Pricing

- **Price:** $18.95 (inc GST) — $17.23 AUD, exc GST
- **Quantity discounts:** 6+ $16.36 (exc GST) · 12+ $15.67 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 27 and Aug 31.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=DFR0213:1` (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/DFR0213:1.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

The Dreamer Nano V4 is a surface mount breadboard embedded version of the ATMEGA 32U4 with integrated Micro USB. It has everything that [Arduino Leonardo](https://www.dfrobot.com/product-698.html) has (electrically). Physically, it is just missing power jack to save space. Using the ATmega32U4 as its sole microcontroller allows it to be cheaper and simpler. Also, because the 32U4 is handling the USB directly, code libraries are available which allow the board to emulate a computer keyboard, mouse, and more using the USB-HID protocol! The Dreamer Nano v4 is compatible with most Nano shield in the market. It's suitable for projects that require a compact size controller system. Note: The pins supporting I2C/TWI is located at Digital Pins D2(SDA) and D3(SCL).
**Dreamer Nano V4.1 Projects 01:**[How to make a GPS Speedometer?](https://www.dfrobot.com/blog-709.html)Hardware components:
[OLED 2828 Display Module ](https://www.dfrobot.com/product-1269.html)[GPS Module with Enclosure](https://www.dfrobot.com/product-1302.html)[Dreamer Nano V4.1 (Arduino Leonardo Compatible)](https://www.dfrobot.com/product-786.html)[3mm LED Pack (50 pcs)](https://www.dfrobot.com/product-878.html)perf boardHand tools and fabrication machines:[3D Printer (generic)](https://www.dfrobot.com/category-170.html)Soldering iron (generic)
**Dreamer Nano V4.1 Projects 02:**[The Offensive Maker | Homemade # Posture-controlled Gamepad# to Shame Among Us Players](https://community.dfrobot.com/makelog-308554.html)

###  Specification

- Microcontroller:ATmega32u4
- Operating Voltage:5V
- Input Voltage (recommended):6.5-12v (VIN) / 5v (Micro USB)
- Input Voltage (limits):6.5-12V
- Digital I/O Pins:21
- PWM Channels:7
- Analog Input Channels:6
- DC Current per I/O Pin:40 mA
- DC Current for 3.3V Pin:50 mA
- Flash Memory:32 KB (ATmega32u4) of which 4 KB used by bootloader
- SRAM:2.5 KB (ATmega32u4)
- EEPROM:1 KB (ATmega32u4)
- Clock Speed:16 MHz
- Compatible with most of Nano shield
- Size: 45x20x20mm (1.77x0.79x0.79")

###  Documents

- [Dreamer Nano 4.1 Wiki](https://www.dfrobot.com/wiki/index.php/Dreamer_Nano_V4.0_(DFR0213))
- [Dreamer Nano 4.1 schematic](https://core-electronics.com.au/attachments/localcontent/DreamernanoSchematicV4_53474251a0d.pdf)
- [Dreamer Nano V4 Layout and Dimension](https://core-electronics.com.au/attachments/localcontent/DreamernanoV4_151790e493c.pdf)
- Arduino Leonardo versus Uno – What’s new
- Arduino Leonardo product page
- Arduino IDE
- [Atmega32u4 datasheet](https://core-electronics.com.au/attachments/localcontent/atmega32u4datasheet_90717eb6559.pdf)
- [Old Version Schematic V4.0](https://core-electronics.com.au/attachments/localcontent/DreamerNanov4_51826c83aad.pdf)

###  Parts List

- Dreamer Nano V4.1 x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/d/f/dfr0213.jpg)