Adafruit Power Measurement

USB Voltage Meter with OLED Display [AF-2690]

Get it by Wednesday, Dec 13th

This USB In-Line Voltage and Current Meter with OLED Display is a lot like the Charger Doctor we carry - if the doctor was a talented surgeon who just lost her medical license and has nothing to lose.  Just like the charger doctor, you...

USB Charger Doctor - In-line Voltage and Current Meter [AF-1852]

Help! This patient is heating up! Is the voltage too low? Is the current draw too high? Is there a doctor in the house? Oh, thank goodness, the Charger Doctor is here! Right on time...Doctor, can you tell us what the current draw is? W...

Adafruit USB Power Gauge Mini-Kit [AF-1549]

This little USB port go-between is like a speed gauge for your USB devices. Instead of hauling out a multimeter and splicing cables, plug this in between for a quick reading on how much current is being drawn from the port. Great for see...

INA169 Analog DC Current Sensor Breakout - 60V 5A Max [AF-1164]

Get it by Wednesday, Dec 13th

This breakout board will solve all your current-monitoring problems. Instead of struggling with a multimeter, you can just use the handy INA169 chip on this breakout to both measure both the DC current draw and have a handy analog output...

INA219 High Side DC Current Sensor Breakout - 26V ±3.2A Max [AF-904]

Get it by Wednesday, Dec 13th

This breakout board will solve all your power-monitoring problems. Instead of struggling with two multimeters, you can just use the handy INA219B chip on this breakout to both measure both the high side voltage and DC current draw over I...

Mini 3-wire Volt Meter (0 - 99.9VDC) [AF-705]

Get it by Monday, Dec 4th

Put a voltage meter anywhere with this very handy display. These are often used by RC hobbyists for keeping track of batteries but we thought it would be great on a breadboard or enclosure. This is the 3-wire version of the volt meter,...

Panel Current Meter - 0 to 9.99A [AF-574]

Get it by Wednesday, Dec 13th

Put a current meter anywhere with this very handy display. This panel meter requires a DC voltage to run, and then has two thick gauge wires to measure current draw. A shunt is already on board so its very easy to hook up!Since current s...

Panel Volt Meter - 4.5V to 30VDC [AF-575]

Get it by Wednesday, Dec 13th

Put a voltage meter anywhere with this very handy display. This panel meter simply connects to whatever DC supply you are trying to track, easy to wire up!Simply connect the red wire to the positive supply, and black to negative ground. ...

Mini 2-wire Volt Meter (3.2 - 30 VDC) [AF-460]

Get it by Wednesday, Dec 13th

Put a voltage meter anywhere with this very handy display. These are often used by RC hobbyists for keeping track of batteries but we thought it would be great on a breadboard or enclosure. This is the 2-wire version of the volt meter,...

Mini Power Meter with Voltage, Current, Watts, mAh mWh Display [AF-3624]

Get it by Wednesday, Dec 13th

This Mini Power Meter with Voltage, Current, Watts, mAh & mWh Display (whew that is a mouth-full) is a lot like the USB In-Line Voltage and Current Meter we carry but can  be used with a wide range of voltages (not just USB connections...