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【Accurate Current Monitoring】Experience precise current monitoring with the INA219 module, designed for effortless integration into your Arduino projects. Its I2C interface and programmable calibration ensure accurate readings, providing you with real-time data crucial for optimizing your power management solutions.
【Versatile Voltage Sensing】The INA219 sensor supports a wide voltage range from 0V to 26V, making it Suitable for various applications, including server systems, telecommunications, and battery chargers. Its adaptability ensures seamless operation across different devices, enhancing your project's efficiency and reliability.
【User-Friendly I2C Interface】Featuring a 12C or SMBUS compatible interface with 16 programmable addresses, this module simplifies the integration process, allowing for quick and easy setup. Its user-friendly design ensures that even beginners can effortlessly implement advanced power monitoring capabilities.
【Robust Performance in Extreme Conditions】Built to withstand harsh s, the INA219 operates effectively between -40°C to 125°C. This durability makes it Suitable for demanding applications such as welding and test equipment, ensuring consistent performance regardless of external conditions.
【Enhanced Power Calculation】Beyond simple current measurement, the INA219 allows for power calculation in watts through additional multiplication registers. This feature empowers you to gain deeper insights into power consumption, helping you design more energy-efficient systems and reduce overall energy costs.

وصف

Key Specifications

Module Voltage: 3.0-5.5V DC
Bus Voltage Range: 0-26V DC
Current Range: ±3.2A (0.8mA Resolution) / ±400mA (0.1mA Resolution)
Accuracy: ±1% Full-Scale (Temperature Compensated: -40°C to +85°C)
Shunt Resistor: 0.1Ω ±1% (2W Power Rating)
I2C Addresses: 16 Programmable (Default: 0x40)
Power Calculation: Real-Time Wattage via Integrated Multiplier
Sampling: 128x Averaging for Noise Immunity

Pin Functions

VIN+: Bus Voltage Input Positive (0-26V) → Connect to Power Source+
VIN-: Bus Voltage Input Negative → Connect to Load+
GND: Common Ground (Star Topology Recommended)
VCC: 3.3V/5V Module Power Input (3.0-5.5V)
SCL: I2C Clock (3.4MHz Max)
SDA: I2C Data
A0/A1: Address Select Pins → GND=0, VCC=1 (Configures 0x40-0x4F)
⚠️ Critical Wiring: Current flows VIN+ → Load → VIN-. Reverse connection reports negative values!

FAQ

Q1: Negative current readings?
Swap VIN+/VIN- connections. Current must flow from VIN+ to Load to VIN- .

Q2: I2C communication failure?
① Confirm A0/A1 jumpers (default: both GND=0x40); ② Check pull-up resistors (4.7kΩ on SDA/SCL) .

Q3: Inaccurate >2A measurements?
Reduce sampling rate: High currents heat shunt resistor, altering resistance. Use 64x averaging max .

Q4: Need >3.2A range?
Replace shunt resistor: 0.01Ω enables ±32A (8mA resolution). Recalibrate via register 0x05 .

Q5: Voltage spikes damage module?
Add 100μF capacitor between VIN+/GND. Bus voltage must never exceed 26V! .

مرحبًا،

بحث

INA219 وحدة استشعار التيار الرقمي، واجهة I2C لـ Arduino، مراقبة الطاقة القابلة للبرمجة، لوحة PCB للإلكترونيات ذاتية الصنع

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