The Yocto-Knob device provides easy reading of 5 input buttons, contacts, switches or potentiometers (knobs) from USB. It is a kind of USB analog-to-digital converter (adc). It can also be used to read any analog resistive sensor, such as photodiodes.

On the device, 5 tiny LEDs constantly show the value of the 5 inputs, and 5 micro-switches connected in parallel to the inputs simplify the testing of your project.

This device can be connected directly to an Ethernet network using a YoctoHub-Ethernet, to a WiFi network using a YoctoHub-Wireless-g, it can even be connected to a GSM network thanks to the YoctoHub-GSM.

Yocto-Knob Yocto-Knob Yocto-Knob

USB cables and enclosure to be ordered separately.

CHF 33.10

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Manufacturer Product NumberYBUTTON1
Product nameYocto-Knob
USB connectormicro-B
Refresh rate250Hz
Supported Operating SystemsWindows, Linux (Intel + ARM), Mac OS X, Android
Driversno 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 enclosureYoctoBox-Short-Thick-Black
Made inSwitzerland

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 How to build an USB pluviometer  Resurrecting an old clock  An animated Advent window  Interfacing a rotary encoder with a Yocto-Knob  New Excel plug-in  Splash photography  A Chuck Norris fact dispenser  Building a GPS tracking beacon 

Accessories and related products

YoctoBox-Short-Thick-Black, Enclosure for Yoctopuce device (short, thick, black)YoctoBox-Short-Thick-Transp, Enclosure for Yoctopuce device (short, thick, transp)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 Firmware24473 (05/12/2016)
Library for Javascript25534 (10/10/2016)
Library for PHP25534 (10/10/2016)
Library for Objective C25534 (10/10/2016)
Library for C++25534 (10/10/2016)
Library for C#25534 (10/10/2016)
Library for VisualBasic .NET25534 (10/10/2016)
Library for Delphi25534 (10/10/2016)
Library for Python25534 (10/10/2016)
Library for Java25534 (10/10/2016)
Library for Android25534 (10/10/2016)
Library for Command line25250 (08/23/2016)
Virtual Hub for Windows25601 (10/19/2016)
Virtual Hub for Linux, Intel + ARM25601 (10/19/2016)
Virtual Hub for Mac-OS-X25601 (10/19/2016)

Add a comment 4 comments

1 - edward_valarm Wednesday,february 20,2013 18H21

Android™ app Valarm Pro v1.1.0 includes support for the incredibly fun and useful Yocto-Knob sensor! You can use these sensors/switches/dials to trigger alerts and/or record the conditions of a variety of cool stuff you might need to monitor. All without any programming: just configure Valarm on the host Android and away you go. Here are some ideas:

- Monitor any equipment with LED status lamps
- Monitor and alert you to the level of fluid (water) in a reservoir or tank (either in fifths, or with e-tape)
- Monitor burglar-alarm switches on doors and windows
- Alert you of flooding/presence of water on the floor or in a tub
- The lights go out unexpectedly in your indoor hydroponic garden
- Measure how far open a door or flap is (this is how the MAF sensor in some cars works)
- How many times your dog goes in and out the pet door every day
- Alert you when your laptop comes and goes from its stand, how much milk is left in the fridge, or anything else that might exert pressure/weight.
- Many, many more possibilities!

See http://valarm.net/yoctopuce for more information.


2 - edward_valarm Thursday,march 07,2013 20H09

Now available: HowTo tutorial for using the Yocto-Knob with Valarm for Flood Alerts and Water Detection! http://www.valarm.net/blog/use-valarm-sensor-for-flood-warning-and-water-detection/

3 - warunasampath Monday,december 29,2014 9H11

When the Yocto-Knob device is connected with the samsung tab two is not implemented. These instructions are for your attend.
Please give your kind attention as soon as possible.

Thank You.

4 - martinm (Yocto-Team)Monday,december 29,2014 9H31

@warunasampath: I don't understand your comment, please contact Yoctopuce support.

Yoctopuce, get your stuff connected.