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  1. Parts
  2. /Sensors
  3. /Current & voltage

Voltage Monitoring Module For Smart Car

OverviewWiringAlternatesRelated groups
Voltage Monitoring Module For Smart Car — DFRobot — DFR0673

Real-time voltage display module for robot car batteries, measuring 2.5–30V with ±1% accuracy and 300ms refresh. No external power required; LED readout.

Offers

  • DFRobot$0.00
  • ?DigiKey$4.50

Offers

  • DFRobot$0.00
  • ?DigiKey$4.50

Start wiring

I2C · Analog · 3.3 – 5 V · Breakout

Verify supply voltage and logic levels before powering up.

Power monitors

23 other options

INA-series I2C monitors, Hall-effect sensors like the ACS723 and Gravity 20A/50A boards, and non-invasive CT clamps for everything from 3.3V rail telemetry to mains current sensing.

View all 23
  • 0.28 Inch LED Digital DC Voltmeter - Green visual preview

Related groups

4 groups
Biomedical Sensor Pad (10 pack) visual preview
BOSON: Heart Rate Monitor Sensor i20 visual preview
Capacitive Fingerprint Reader visual preview
Capacitive Fingerprint Reader (B) visual preview

Biometrics

UART/I2C fingerprint modules, MAX30102 PPG breakouts, and analog ECG/EMG front-ends for access control and hobby biometric sensing.

Sensors · Biometric sensors · 24 parts

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Cameras

Pi CSI modules, USB cameras, MCU-class OV2640/OV5640 boards, on-camera AI like HuskyLens and OpenMV, and thermal or ToF imagers — over 130 listings across very different pipelines.

Sensors · Cameras & vision · 139 parts

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25m Long Distance ToF Laser Sensor (±3cm Accuracy, 100Hz, 100K LUX Resistant) visual preview
4-20HR-MaxSonar-WRMI MB7489 Waterproof Ultrasonic Distance Sensor (50~500cm, IP67) visual preview

Distance sensors

About 180 listings spanning VL53-series ToF breakouts, HC-SR04 and MaxSonar ultrasonics, 360° triangulation LiDARs, IR proximity sensors, 24GHz mmWave presence detection and laser break-beam sensors.

Sensors · Distance sensors · 178 parts

4mm Mini Circular Force Sensor visual preview
Adafruit HX711 24-bit ADC for Load Cells / Strain Gauges visual preview
Adafruit Square Force-Sensitive Resistor (FSR) visual preview
Circular Force Sensor (Diameter: 18.3mm, 20g-6kg, Thickness: 0.4mm) visual preview

Force & weight

Interlink-style FSRs, strain-gauge load cells with HX711 amplifiers, and ready-made kits like DFRobot's Gravity I2C 1kg scale — from simple touch detection to accurate mass measurement.

Sensors · Force & weight · 28 parts

Parts tray full · 5 max · remove a part to add another

0.28 Inch LED Digital DC Voltmeter - Green

  • 4-ch Current/Voltage/Power Monitor HAT visual preview

    4-ch Current/Voltage/Power Monitor HAT

  • Adafruit INA219 FeatherWing visual preview

    Adafruit INA219 FeatherWing

  • Adafruit INA219 High Side DC Current Sensor Breakout STEMMA QT visual preview

    Adafruit INA219 High Side DC Current Sensor Breakout STEMMA QT

    $9.95
  • Adafruit INA228 I2C 85V 20-bit Power Monitor STEMMA QT / Qwiic visual preview

    Adafruit INA228 I2C 85V 20-bit Power Monitor STEMMA QT / Qwiic

    $14.95
  • Adafruit INA237 85V 10A DC Current Voltage Power Monitor visual preview

    Adafruit INA237 85V 10A DC Current Voltage Power Monitor

    $9.95
  • Adafruit INA238 DC Current Voltage Power Monitor STEMMA QT visual preview

    Adafruit INA238 DC Current Voltage Power Monitor STEMMA QT

    $10.95
  • Adafruit INA260 High or Low Side Voltage, Current, Power Sensor visual preview

    Adafruit INA260 High or Low Side Voltage, Current, Power Sensor

  • Adafruit INA3221 Triple Power Monitor STEMMA QT / Qwiic visual preview

    Adafruit INA3221 Triple Power Monitor STEMMA QT / Qwiic

    $10.95
  • Gravity: Analog 20A Current Sensor (AC/DC) visual preview

    Gravity: Analog 20A Current Sensor (AC/DC)

  • Gravity: Analog 50A Current Sensor (AC/DC) V1 visual preview

    Gravity: Analog 50A Current Sensor (AC/DC) V1

  • Gravity: Analog AC Current Sensor (20A) visual preview

    Gravity: Analog AC Current Sensor (20A)