DFR0126

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DFR0126 is an expansion board, also called daughter card, which applies to evaluation boards. Familiar to Arduino, Raspberry Pi, STM32 development board and other microprocessor systems, this expansion board provides abundant resources for users to use. It provides a convenient solution to users for studying and embedding purposes.

The primary purpose of DFR0126 is to extend the current power supply, serial ports and I/O ports, and other resources like I2C interface, analog to digital converter, SD card interface while still maintaining the compatibility with Arduino and Raspberry Pi. It also enables users to quickly and easily design and build IoT systems.

DFR0126 features several kinds of functions. It supports Arduino data pins and provides 7-12V input power supply. It is equipped with all kinds of interface, including serial port, I2C, programming port, and SD card interface. The number of I/O ports has been increased to 40 which are mostly used for signal receiving. The analog channel is eight-way, allowing users to attach to 8 additional devices. With the I2C port, users can control all kinds of I2C device solenoid driving and level shifting.

In terms of working principles, its core component is the ATmega processor related to the I/O module. The main chip leads the external port connected with I/O port and supplies power to the I/O devices, but it also processes the gathered information. Next, the processor stores the addressed data in the EEPROM and interacts with the A/D module.

Then the data sent from the processor is passed through the D/A module and the temperature sensor module. Finally, it is transmitted to the user module through serial port, I2C, and other interface like the SD card. After the data is processed, it is displayed on the LCD screen or presented in other forms. Similarly, when the user module sends messages through serial port and I2C, the processor deals with the data and responds.

DFR0126 expansion board is a powerful but cost-efficient solution for evaluations and projects. Users can take advantage of its abundant resources and functions to develop their own system and enjoy a smoother experience. What’s more, this board is compatible with other development boards such as Arduino and Raspberry Pi, giving limitless possibilities to build amazing projects.

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