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How to connect NPN and PNP sensors

By martinm, in Electronics, july 07,2017.

From time to time, Yoctopuce support receives questions from customers who do not quite know what to do with the three wires coming out of a PNP or NPN sensor. This week, we are going to tell you how these NPN and PNP outputs work, how to connect them, and with which modules.

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Interfacing a Wiegand RFID reader by USB

By mvuilleu, in DIY and Electronics, june 30,2017.

Among the requests that we received in the past few weeks, one caught our attention more particularly: how to interface a Wiegand RFID badge reader via USB, using Yoctopuce modules. It's interesting because Wiegand readers are widely spread in access control systems, and they are readily and quite cheaply available on the net. The good news is that we now have a solution, using a simple Yocto-Serial.

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The Yocto-Maxi-IO-V2 and the Yocto-IO

By mvuilleu, in New stuff and Electronics, june 13,2017.

You may have noticed that we very recently replaced in our shop the Yocto-Maxi-IO with the Yocto-Maxi-IO-V2. The two versions of the module look like two peas in a pod. A more compact variant of the module is also now available: the Yocto-IO. Let's have a look at what changes with version 2 and at the capabilities of the miniature version.

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DipTrace: Make a custom PCB for Yoctopuce devices

By mvuilleu, in Electronics and DIY, july 11,2016.

It is easy to combine Yoctopuce devices to build a complex system, like Lego bricks. But using micro-USB cables for interconnections is often not adequate to make a robust, compact and professional-grade solution. One possible alternative to USB cables is the use of small wires with 1.27mm connectors, much smaller, which can be soldered on all our devices. Today we are showing a second alternative, which also solves the question of fixing the complete system in a dedicated enclosure.

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Building a USB-driven variable resistor

By martinm, in DIY and Electronics, january 08,2016.

From time to time, people ask us if our roadmap would not include a digital USB potentiometer. The answer is no, because such product would probably be too limited to be useful. However, we can tell you how to build your own digital variable resistance, using just a few relays and resistors.

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Yoctopuce, get your stuff connected.