DFRduino UNO R3: Arduino Uno R3 Compatible Microcontroller Board
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DFRduino UNO R3: Arduino Uno R3 Compatible Microcontroller Board
The DFRduino UNO V3.0 from DFRobot is a compact physical computing board ideal for both academic use and development. This microcontroller board is fully compatible with Arduino UNO R3 and the Arduino IDE open-source development environment, which supports the Processing / Wiring language. As a premium DFRobot Arduino compatible solution, the DFRduino UNO V3.0 provides the reliability needed for professional prototyping.
You can use the DFRduino UNO V3.0 to build stand-alone interactive objects or connect it to software on your computer (such as Flash, Processing, MaxMSP). The open-source Arduino IDE can be downloaded for free and supports Mac OS X, Windows, and Linux. This microcontroller board is the perfect starting point for anyone exploring the Arduino UNO R3 ecosystem.
Board Features of the DFRduino UNO V3.0
This microcontroller board uses the ATmega16U2 as a USB-to-serial converter and retains the DIP package AVR Chip (ATmega328), allowing for easy reprogramming or replacement, just like a standard Arduino UNO R3. A standout feature of this DFRobot Arduino board is the enhanced connectivity design.
A key feature of the DFRduino UNO V3.0 is the use of color-coded headers for different I/O port types:
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Red for Power Section
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Blue for Analog I/O
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Green for Digital I/O
These colors match DFRobot’s sensor cables, making it easier to identify where to connect sensors to your microcontroller board and distinguish between Analog and Digital pins on the DFRduino UNO V3.0.
Technical Specifications: DFRobot Arduino UNO
| Parameter | Description of DFRduino UNO V3.0 |
|---|---|
| Microcontroller | ATmega328 (DIP package) - compatible with Arduino UNO R3 |
| Operating Voltage | 5V (Standard Microcontroller Board voltage) |
| Input Voltage | 7V–12V DC (recommended for DFRobot Arduino) |
| Output Voltage | 5V DC and 3.3V DC |
| Clock Speed | 16 MHz |
| Bootloader | Arduino Uno (fully Arduino IDE compatible) |
| Digital I/O Pins | 14 (6 provide PWM output) |
| Analog Input Pins | 6 |
| DC Current per I/O Pin | 40 mA |
| DC Current for 3.3V Pin | 50 mA |
| Flash Memory | 32 KB (ATmega328) |
| SRAM | 2 KB (ATmega328) |
| EEPROM | 1 KB (ATmega328) |
| Dimensions | 75 x 54 x 15 mm |
| Weight | 45 g |
| USB Connection | A-B USB cable |
| IDE Support | Arduino IDE 1.0 and above |
| Environment Friendly | RoHS Compliant |
Interface & Compatibility of DFRobot Arduino
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Supports UART, I2C, and SPI
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ICSP Header for firmware upload on the DFRduino UNO V3.0
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RESET Button
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USB Interface supports both programming and power supply for this microcontroller board
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SDA and SCL pins near the AREF pin
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IOREF pin supports shields that adapt to 3.3V or 5V systems
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Fully compatible with all Arduino UNO R3 shields and the Arduino IDE
Applications for DFRduino UNO V3.0
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STEM education using the DFRduino UNO V3.0
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DIY electronics projects with DFRobot Arduino boards
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Smart home systems powered by this microcontroller board
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Rapid prototyping with Arduino UNO R3 compatibility
Shipping List
- DFRduino Uno V3.0 (Arduino UNO R3 compatible) x1
Reference for your DFRobot Arduino Project
1. General Shipping Information
- We provide reliable shipping services with a tracking number for each order.
- Shipping addresses must be entered in English and should not contain special symbols, so that the courier system can recognize your location correctly.
- Please make sure your shipping address is accurate before placing your order. We ship strictly according to the address provided at checkout.
- In-stock orders are usually dispatched within 1 business day after order confirmation.
- Estimated delivery times refer to the period after dispatch and do not include order processing time, weekends, public holidays, customs inspection, or force majeure delays.
- If you need to cancel or modify your order, please contact us before the order is marked as “Shipped”. Once shipped, the order cannot be canceled or changed.
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If you require expedited shipping, please contact our customer support team at info@upenelab.com for a customized quote based on your destination.
2. Shipping Rates & Options
Shipping rates are calculated based on order value, destination, and available shipping methods. The final available options will be displayed at checkout.
2.1 Germany Domestic Shipping
| Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|
| Deutsche Post | €0.00 - €50.00 | €4.95 | 2-4 Business Days |
| Deutsche Post | Over €50.00 | Free | 2-4 Business Days |
|
DHL Paket (Faster Delivery) |
€0.00 - €50.00 | €6.95 | 1-3 Business Days |
|
DHL Paket (Faster Delivery) |
€50.00 - €100.00 | €2.00 | 1-3 Business Days |
|
DHL Paket (Faster Delivery) |
Over €100.00 | Free | 1-3 Business Days |
2.2 Selected EU Countries / Regions
Available EU shipping destinations are shown at checkout based on your shipping address. For orders shipped to selected EU countries or regions outside Germany, we use FedEx Regional Economy.
| Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|
| FedEx Regional Economy | €0.00 - €100.00 | €7.95 | 3-5 Business Days |
| FedEx Regional Economy | Over €100.00 | Free | 3-5 Business Days |
EU orders may be fulfilled from our Munich warehouse or, when applicable, from our Shenzhen warehouse depending on inventory availability. For EU member states, OpenELAB covers applicable import duties and taxes under DDP service where required.
2.3 United States
| Region | Shipping Method | Order Value | Cost | Est. Delivery |
|---|---|---|---|---|
|
Continental U.S. (50 States) |
USPS Ground Advantage | €0.00 - €45.00 | €4.95 | 3-7 Business Days |
| USPS Ground Advantage | Over €45.00 | Free | 3-7 Business Days | |
| USPS Priority Mail | €0.00 - €45.00 | €16.95 | 1-4 Business Days | |
| USPS Priority Mail | Over €45.00 | €14.95 | 1-4 Business Days | |
|
Non-Continental U.S. (AK, HI, PR, etc.) |
USPS Ground Advantage | €0.00 - €60.00 | €6.95 | 5-9 Business Days |
| USPS Ground Advantage | Over €60.00 | Free | 5-9 Business Days |
Non-Continental U.S. regions include Alaska, American Samoa, Guam, Hawaii, the Marshall Islands, the Northern Mariana Islands, Palau, Puerto Rico, the U.S. Virgin Islands, and U.S. Armed Forces addresses.
2.4 International Destinations Outside the EU
For selected international destinations outside the EU, including Switzerland, the United Kingdom, and Norway, shipping rates are as follows:
| Order Amount | Shipping Cost |
|---|---|
| €0.00 - €300.00 | €19.95 |
| Over €300.00 | Free |
For non-EU destinations, import duties, taxes, and customs fees may be charged by the destination country and are the responsibility of the recipient.
3. Warehouses & Fulfillment
Our products may be stored in our Munich, Arlington, and Shenzhen warehouses. The actual shipping warehouse depends on product availability and destination.
3.1 Munich Warehouse
For products stored in our Munich warehouse, we use Deutsche Post or DHL Paket for domestic deliveries within Germany. For selected EU destinations outside Germany, we use FedEx Regional Economy.
3.2 Arlington Warehouse
For products stored in our Arlington warehouse, we use USPS or UPS for deliveries within the United States.
3.3 Shenzhen Warehouse
For pre-order items or products fulfilled directly from our Shenzhen warehouse, we arrange reliable international shipping based on destination and inventory status. For EU member states, OpenELAB covers applicable import duties and taxes under DDP service where required.
4. Inventory, Pre-orders & Split Shipments
- Inventory Status: Please check the product page for real-time stock information. If an item is out of stock in our local warehouses, it may be marked as “Pre-order”.
- Pre-order Fulfillment: Pre-order items may be shipped directly from Shenzhen or restocked to a local warehouse first before final delivery.
- Split Shipments: If your order contains both in-stock and pre-order items, we may ship them separately. No additional shipping fee will be charged for split shipments caused by our fulfillment arrangement.
5. Customs, Taxes & Delivery Issues
5.1 Customs and Taxes
For EU Member States:
Whether shipped from Germany or China, OpenELAB covers applicable import duties and taxes under DDP service where required. Customers in EU member states should not be charged additional import duties or VAT upon delivery.
For destinations outside the European Union, such as Switzerland, Norway, and the United Kingdom, import duties, taxes, and customs fees may be charged by local authorities upon delivery. These fees are the responsibility of the recipient.
5.2 Damaged, Delayed, or Lost Parcels
Please inspect your parcel upon delivery where possible. If you notice visible damage, please report it to the courier and contact us as soon as possible. This does not affect your statutory consumer rights.
If your parcel is delayed, lost, returned to sender, or the tracking information has not updated for an unusual period of time, please contact us at info@upenelab.com. We will assist you in checking the shipment status with the courier.
5.3 Incorrect Address or Failed Delivery
If a parcel cannot be delivered due to an incorrect or incomplete address provided by the customer, refusal of delivery, or failure to collect the parcel, additional shipping or return costs may apply.
6. VAT
For orders within the EU, VAT is collected at checkout according to the applicable destination rules. No additional VAT should be collected upon delivery for EU member state orders covered under our DDP shipping arrangement.





