Gravity: I2C 12-Bit DAC Module

The DFRobot Gravity 12-Bit I2C DAC module is a compact and user-friendly digital-to-analog converter with an EEPROM. It precisely converts digital values into corresponding analog voltage signals, making it a great asset for various creative projects and automatic control systems. Traditional controllers like Arduino and Raspberry Pi can generate analog voltage signals using PWM, but these signals are rough and inaccurate. The DAC module is the ideal choice for getting a stable and smooth analog voltage signal. Besides its use in automatic control systems, it can also act as a function generator to create sine waves, triangular waves, and even arbitrary waveforms. We offer a library to generate low-frequency sine and triangular waves with just a few parameters. The module uses a 12-bit DAC MCP4725. It doesn't need an external reference voltage as the DAC reference is directly driven from VCC. It supports a wide input voltage range of 3.3V to 5V and has an I2C address selection switch, allowing two address options (0x60 and 0x61) and supporting a maximum of two modules in cascade. The EEPROM can store the DAC input when the power is off and resume the DAC output when the power is on. Features: - 12-bit high-precision DAC - On-board EEPROM to save DAC input during power-off - Gravity I2C interface for easy plug-and-play, with XH2.54 4P reserved for expansion - Wide voltage input, compatible with 3.3V and 5V controllers - Small size and easy to install Applications: - Sensor Calibration - Automatic Control Systems - Function Generator Specification: - Input Voltage (VCC): 3.3V - 5.0V - Output Voltage: 0 to VCC - Resolution: 12-bit - Working Current: <0.2 mA - Interface: Gravity I2C (logic level: 0 - 3.3V) - Dimension: 27.0mm * 22.0mm - Weight: 13.8g Documents: - Product wiki - More Documents

Using this DFRobot Gravity I2C 12-Bit DAC module is quite simple. First, connect it to your controller through the Gravity I2C interface. It's a plug-and-play setup, so you don't have to worry about complex wiring. The module supports 3.3V to 5V input voltage, so make sure your power supply is within this range. When using it as a function generator, you can use the provided library to generate low-frequency sine and triangular waves with just a few parameters. Just input the right values and let the module do its job. As for the EEPROM, it will remember the DAC input when you turn off the power. So when you turn it back on, it will resume the output without any extra steps. When handling the module, be gentle as it's a small and delicate device. Keep it away from moisture and extreme temperatures to ensure its normal operation. Also, don't exceed the specified input voltage and current to avoid damaging the module. To maintain the module, you don't need to do much. Just keep it clean and free from dust. If you're not using it for a long time, store it in a dry and safe place.