1. R4 wifi adopts immersion gold technology, and its functions are hardware compatible with for form factor 2. R4 WiFi maintains the same form factor, pinout, and 5V operating voltage as its predecessor for R3, ensuring seamless transition for existing expansion boards and projects. 3. Expanded memory and faster clock: R4 WiFi has larger memory and faster clock speeds for more precise calculations and easier handling of complex projects. 4. Additional onboard peripherals: R4 WiFi introduces a range of onboard peripherals, including 12-bit DAC, CAN bus and operational amplifiers. Provides expanded functionality and design flexibility. 5. Extended 24V tolerance: R4 WiFi supports a input voltage range, allowing seamless integration with motors, LED strips and other actuators using a single power supply. HID support: With built-in HID support, for the R4 WiFi can emulate a mouse or keyboard when connected to a computer via USB, making it easy to send keystrokes and mouse movements. Wi-Fi and Bluetooth: R4 WiFi hosts the ESP32-S3 module, enabling makers to add wireless connectivity to their projects. Combined with for the IoT Cloud, makers can monitor and control their projects remotely. Qwiic connector: The R4 WiFi features a Qwiic I2C connector, making it easy to connect to nodes in the broad Qwiic ecosystem. Adapter cables are also compatible with other connector-based sensors and actuators. Support battery-powered The R4 WiFi contains additional pins, including an OFF pin to shut down the board and a VRTC pin to keep the internal real-time clock powered and running. LED : The R4 WiFi contains a 12x8 red LED , Perfect for projects with animation or plotting sensor data without the need for additional hardware. Runtime error diagnosis: R4 WiFi includes an errortrapping mechanism that detects runtime crashes and provides detailed explanations and tips on of code that caused the crash. R4 wifi is additionally designed for makers to expand the GND and VCC corresponding to the IO port. At the same time, it also extends the IC2 and serial port communication functions. Compared with for the official R4 wifi, it better meets the needs of DIY maker enthusiasts. Due to different batches, the appearance, color, and printed words of the product , which does not affect its use. Material: PCB colour: Black Package Contents: 1 x Development Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.