The most affordable and easy-to-use precision energy analyzer, is now even better.
Joulescope measures current and voltage and then computes power, energy, and charge.
Measuring energy consumption during product development is crucial, especially for battery-powered and always-on devices. However, measuring energy consumption accurately has been expensive, tedious or error-prone.
We’ve designed something better. Meet Joulescope!
Joulescope measures current and voltage, then computes power, energy, and charge. Joulescope™ enables designers, engineers, and makers to quickly and easily optimize the energy consumption and battery life of a target device. Joulescope is designed to automatically handle wide current ranges and rapid changes in energy consumption, while allowing the target device to run normally.
Key Features
Amazing dynamic range
Joulescope accurately measures electrical current over 10 orders of magnitude from amps down to nanoamps. This wide range allows accurate and precise current measurement for modern devices. Sleep modes are often just nanoamps (nA) or microamps (µA). Active modes are often milliamps (mA) or amps (A).
Low voltage drop
Most multimeters and current meters have a significant voltage drop (sometimes called burden voltage or insertion loss), which affects the actual voltage delivered to the device under test. Joulescope has a total voltage drop of 25 mV at 1 A, which keeps your target device running correctly. Joulescope’s extremely fast current range switching maintains low voltage drop even under rapidly varying current demands.
Makes the invisible visible
Joulescope measures current and voltage 2 million times per second with 300kHz bandwidth. This high sampling rate makes the power consumption of interrupt service routines, inrush currents and other short events visible.
Easy to use
Joulescope reports cumulative energy and charge consumption along with real-time current, voltage, and power. The multimeter view clearly shows the most recent value while the oscilloscope view allows you to explore changes over time. Much simpler and more accurate than anything in its class!
Customizable
The Joulescope host software is open source on GitHub. You can also swap the banana jack front panel with front panels that have other connector types! The front panels are open source on GitHub.
Affordable
Joulescope is affordable and priced so that every developer on the team can have one at their desk. With such convenient access, Joulescope allows developers to see the impact of their changes on energy consumption immediately. Developers can make informed choices to account for battery life during design. Eliminate power consumption surprises during final product testing!
View instantaneous values
Joulescope captures and displays the instantaneous current, voltage, power, energy, and charge, like a multimeter.
View waveforms over time
View changes over time, like with an oscilloscope. Navigate through your data, select regions of interest, and explore where your device uses the most current and power.
All on your computer.
Joulescope connects entirely using USB with no external power adapters. The software is free and open source. Easily navigate your data using a mouse and keyboard.
