This device is a digital USB ammeter that allows you to measure current automatically. It can provide quite precises digital measures (2 mA, 1%). It works with direct current (DC) as well as alternating current (AC) for which it provides the RMS value (5 mA or 3%).

This device is isolated, which means that the sensing part is electrically disconnected from the USB part: you can measure any current including from the mains, without risk of frying your computer.

The modules provides immediate reading on USB, and can also store measures on the device internal flash for later retrieval when connected again by USB.

This device can be connected directly to an Ethernet network using a YoctoHub-Ethernet, or to a WiFi network using a YoctoHub-Wireless-g.

Yocto-Amp Yocto-Amp Yocto-Amp Yocto-Amp

USB cables and enclosure to be ordered separately.

CHF 64.80

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Manufacturer Product Number
Product name
20 mm
56 mm
8 g
USB connector
Max current (Cont.)
10 A
Max current (peak)
17 A
Refresh rate
10 Hz (DC)
Accuracy (AC)
5 mA, 3 %
Accuracy (DC)
2 mA, 1 %
2 mA, 0.3%
Supported Operating Systems
Windows, Linux (Intel + ARM), Mac OS X, Android
no driver needed
API / SDK / Libraries (USB+TCP)
C++, Objective-C, C#, VB .NET, Delphi, Python, Java/Android
API / SDK / Libraries (TCP only)
Javascript, Node.js, PHP, Java
Suggested enclosure
Made in

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Accessories and related products

YoctoBox-Long-Thick-Black-Vents, Enclosure for Yoctopuce device (long thick black vents)YoctoBox-Long-Thick-Transp-Vents, Enclosure for Yoctopuce device (long thick transp vents)Micro-USB-Hub, Micro USB hub with solder pads, for DIY useFix-2.5mm, screws and spacersUSB-A-MicroB-30, A to micro-B USB data cable, 30cm


User manual (HTML)
User manual (PDF)
3D file (STEP)
Last firmware (release 19757, 03/17/2015)
Library for Javascript (release 19854, 03/26/2015)
Library for PHP (release 19854, 03/26/2015)
Library for Objective C (release 19854, 03/26/2015)
Library for C++ (release 19854, 03/26/2015)
Library for C# (release 19854, 03/26/2015)
Library for VisualBasic .NET (release 19854, 03/26/2015)
Library for Delphi (release 19854, 03/26/2015)
Library for Python (release 19854, 03/26/2015)
Library for Java (release 19854, 03/26/2015)
Library for Android (release 19854, 03/26/2015)
Library for Command line (release 19854, 03/26/2015)
Virtual Hub for Windows (release 19854, 03/26/2015)
Virtual Hub for Linux, Intel + ARM (release 19854, 03/26/2015)
Virtual Hub for Mac-OS-X (release 19854, 03/26/2015)

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