Mini 2-wire Volt Meter (3.2 - 30 VDC)

$12.07

Part Number:  AF-460
Brand:  Adafruit Australia

DescriptionPut a voltage meter anywhere with this very handy display. These are often used by RC hobbyists for keeping track of batteries but they thought it would be great on a breadboard or enclosure. This is the 2-wire version of the volt meter, two wires are used to power it and measure at the same time. Adafruit also have a 3-wire version that measure a...
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Description

Put a voltage meter anywhere with this very handy display. These are often used by RC hobbyists for keeping track of batteries but they thought it would be great on a breadboard or enclosure. This is the 2-wire version of the volt meter, two wires are used to power it and measure at the same time. Adafruit also have a 3-wire version that measure a wider range of voltages.

Simply connect the red wire to the positive supply, and black to negative ground. The display has a microcontroller that will read the voltage, compare it to a stable reference and display the voltage with 0.1V precision on a 3-digit 7-segment display. It works from 3.2V up to 30V so it will be good for nearly any electronic project! The meter draws 3-4mA to power the microcontroller and display. This particular LED display is a nice vivid green, which they found very readable. Mounting tabs make this module easy to attach to any box or plate.

Technical Details

Dimensions:

  • PCB (with mounting holes): 33mm x 15mm / 1.3" x 0.6"
  • Display: 23mm x 14mm / 0.9" x 0.6"0
  • Combined Depth: 10mm / 0.4"
  • Weight: 4.8g

Power specifications:

  • 3.2V to 30V DC measurements
  • 0.1V precision
  • 3-4mA draw
  • Green LED display
  • Use with positive voltages only!