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<?xml-stylesheet type="text/xsl" href="https://devzone.nordicsemi.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>WS2811 LED Driver interface with nRF8122</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/36552/ws2811-led-driver-interface-with-nrf8122</link><description>Hi 
 I have RGB LED Strip of 5 numbers and giving out 5V from external power supply 
 This LED Strip has WS2811 as LED Driver ( https://cdn-shop.adafruit.com/datasheets/WS2811.pdf ) 
 
 Din is connected to P0.01 and through PWM coding we will be sending</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Thu, 19 Jul 2018 12:01:03 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/36552/ws2811-led-driver-interface-with-nrf8122" /><item><title>RE: WS2811 LED Driver interface with nRF8122</title><link>https://devzone.nordicsemi.com/thread/140659?ContentTypeID=1</link><pubDate>Thu, 19 Jul 2018 12:01:03 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:e6cd9786-3e9b-42cc-8012-0bbc6dc89de6</guid><dc:creator>haakonsh</dc:creator><description>&lt;p&gt;You need a level shifter at 3v3 &amp;lt;-&amp;gt; 5v. The&amp;nbsp;WS2811 specifies a minimum voltage for high input is 0.7 * VDD ---&amp;gt; 0.7 * 5V = 3.5V&amp;nbsp;&lt;br /&gt;&lt;br /&gt;This actually means that you can increase the supply voltage of the nRF51 to 3.6V and you should be within the WS2811 spec.&amp;nbsp;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>