Arduino Uno R4 WiFi for Sale in Johannesburg - Stock at Communica
Buy the Arduino Uno R4 WiFi in Johannesburg at Communica. South Africa's trusted source with genuine parts, collection options, and all the boards and accessories you need.
Ready-to-Ship in Johannesburg
Local Samrand warehouse and branch pickup available for fast fulfilment of Arduino Uno R4 WiFi boards.
Latest Arduino Features
Integrated WiFi, expanded memory, and a faster MCU make the Uno R4 WiFi ideal for IoT and educational projects.
Accessories & Genuine Add-ons
Find compatible shields, sensors, power, and prototyping gear for full project development.
Introducing the Arduino Uno R4 WiFi: Connect, Create, and Prototype in South Africa
The Arduino Uno R4 WiFi is the latest evolution of the classic Uno platform - now redesigned with a blazing-fast Renesas ARM Cortex-M4 processor, expanded RAM/flash, integrated WiFi/Bluetooth (ESP32-S3 coprocessor), and broad hardware compatibility. Available for sale in Johannesburg at Communica, the R4 WiFi unlocks modern IoT development, responsive robotics, and rapid prototyping for makers, engineers, and students alike.
Key Specifications at a Glance
| Feature | Arduino Uno R4 WiFi | Classic Uno R3 |
|---|---|---|
| Microcontroller | Renesas RA4M1 (32-bit, 48MHz) | ATmega328P (8-bit, 16MHz) |
| Flash / SRAM | 256KB / 32KB | 32KB / 2KB |
| WiFi / BLE | ESP32-S3 coprocessor | Not available |
| USB Interface | USB-C (native + programming) | USB-B |
| Shields Compatibility | Most R3 shields supported | Extensive support |
With onboard WiFi and BLE, the Uno R4 WiFi brings wireless sensor applications, cloud connectivity, and web-based automation within reach, all in a well-documented Arduino ecosystem. These upgrades are critical for South African engineering students or professionals needing a modern platform for IoT or remote data projects.
Feature Callouts: Why Upgrade to Uno R4 WiFi?
- Fully Arduino IDE compatible with fast board updates and active local support.
- Integrated wireless: eliminates the need for external WiFi/BLE modules.
- More RAM and flash for advanced libraries, TensorFlow Lite, or larger sketches.
- USB-C interface for easier power and programming (cable included).
- Retains most Uno R3 shield compatibility for existing projects and accessories.
Popular with South African universities, FET colleges, and maker workshops, the Uno R4 WiFi streamlines course design and real-world IoT prototypes - whether you're automating hydroponics, monitoring power meters, or building connected robotics.
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Compatible Accessories & Shields at Communica
- Breadboards, jumper wires, and robust power supplies (for both USB and DC barrel jack).
- Sensors: temperature & humidity (DHT22), motion (PIR), gas (MQ-series), and light (LDR/phototransistor modules).
- Output hardware: relays, displays (OLED/LCD/I2C), servo motors, and neopixel strips.
- Arduino-compatible shields: motor drivers, LCDs, IoT add-ons, and logging modules.
- Tools & cases: anti-static project boxes, soldering irons, multimeters for setup and troubleshooting.
Selection and Setup Guidance
When choosing the Arduino Uno R4 WiFi, consider:
- Check rated input voltage: 7-12V DC for external power (adapters available at Communica).
- Most R3-compatible shields and modules will work out of the box, but confirm pin mapping if using custom code.
- For WiFi/BLE, configure via the Arduino IDE with up-to-date drivers and board packages (see sources below).
South Africa Use Case Examples
| Application | Example |
|---|---|
| IoT Data Logging | Remote soil moisture monitoring in Gauteng, with data pushed to cloud dashboards via WiFi |
| Education | SA university Mechatronics class with wireless robotics kits |
| Industrial Prototyping | Prototyping automated gate controllers or power consumption loggers with MQTT integration |
Summary: Why Choose Communica for Your Uno R4 WiFi?
- Extensive range of Arduino boards, shields, and add-ons in stock for Johannesburg delivery or pickup.
- Expert advice from engineers with local project experience - onsite or via phone/email.
- VAT invoices, bulk pricing, and education/procurement support for South Africa organisations.
Sources
Communica supplies semiconductors and electronic components to industries such as automotive, electrical, automation, mining, and education.
Disclaimer: This content is for educational purposes only. Product availability, pricing, and specifications are subject to change. Always verify current details on the retailer's website before making a purchase. We may earn affiliate commissions from qualifying purchases.
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