The For R4 maintains the same form factor, pinout, and 5V operating voltage as its predecessor, the R3. This ensures a seamless transition for existing expansion boards and projects, leveraging the extensive and unique ecosystem already established for the . Expanded Memory and Faster Clocks: Get ready for more precise calculations and be to handle complex projects with ease. For R4, with larger memory and faster clock speeds, you can handle tough tasks with ease . Additional on-board peripherals: For R4 introduces a range of on-board peripherals, including 12-bit DAC, CAN bus and operational amplifiers. These add-ons provide expanded functionality and flexibility for your . Extended 24V Tolerance: For R4 now supports a input voltage range, allowing up to 24V power supply. This can be implemented with motors, LED strips Seamless integration with other actuators simplifies your projects by utilizing a single power supply. SWD Connector: Debugging is a key aspect of any project. Simply connect an external debugger to the R4 to easily monitor the inner workings of your system. Stay in control and gain valuable . HID Support: For R4 has built-in HID (Human Interface Device) support, allowing it to emulate a mouse or keyboard when connected to a computer via a USB cable. This convenient feature makes sending keystrokes and mouse movements to the computer a simple and easy task. It's a breeze, thereby enhancing usability and functionality. Improved version features: 1. The DC power supply chip has been improved to use IC, and the interface has been extended to row to facilitate additional leads. 2. The main control board is fully compatible with the official functions. Due to different batches, the appearance, color, and printed words of the product , which does not affect its use. Colour:blue Material:PCB type: WIFI 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.