<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[RSS Feed]]></title><description><![CDATA[RSS Feed]]></description><link>http://direct.ecency.com</link><image><url>http://direct.ecency.com/logo512.png</url><title>RSS Feed</title><link>http://direct.ecency.com</link></image><generator>RSS for Node</generator><lastBuildDate>Mon, 18 May 2026 07:28:03 GMT</lastBuildDate><atom:link href="http://direct.ecency.com/@sodnupta/rss" rel="self" type="application/rss+xml"/><item><title><![CDATA[Project 6: Buck Converter (Adjustable Voltage)]]></title><description><![CDATA[Description: Input voltage: 24VAC (RMS) Output voltage: 3.64VDC ~ 16VDC Current rating: 1A Ripple: 24mV Buck converter IC: LM2575 Components: 1N4007 x 4 -> Bridge rectifier 100uF 50V capacitor ->]]></description><link>http://direct.ecency.com/electronics/@sodnupta/project-6-buck-converter-adjustable-voltage</link><guid isPermaLink="true">http://direct.ecency.com/electronics/@sodnupta/project-6-buck-converter-adjustable-voltage</guid><category><![CDATA[electronics]]></category><dc:creator><![CDATA[sodnupta]]></dc:creator><pubDate>Wed, 01 Aug 2018 20:35:03 GMT</pubDate><enclosure url="https://i.ecency.com/p/3zpz8WQe4SNGWd7TzozjPgq3rggennavDx3XPY35pEAVnpvP265LCswtZxfSsjk5bEECBaLk1KpL1z1uEoEhoYfqQKcRCpfmim2PnZryi3C34FHonWLxaMFsJv3SmZrfcraExuteXEaZv2FR37Av?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[New Soldering Iron! - Hakko FX888D-23BY]]></title><link>http://direct.ecency.com/electronics/@sodnupta/new-soldering-iron-hakko-fx888d-23by</link><guid isPermaLink="true">http://direct.ecency.com/electronics/@sodnupta/new-soldering-iron-hakko-fx888d-23by</guid><category><![CDATA[electronics]]></category><dc:creator><![CDATA[sodnupta]]></dc:creator><pubDate>Wed, 01 Aug 2018 19:44:54 GMT</pubDate><enclosure url="https://i.ecency.com/p/C3TZR1g81UNaPs7vzNXHueW5ZM76DSHWEY7onmfLxcK2iNpwtpEasy6MWWcgpDQTBJNkmCbtGVcWPUb2FhZsj2jEozvVM1wLtn8GWP27DVmT74SnqsyFzzA?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Project 5:  555 timer (Adjustable duty cycle)]]></title><description><![CDATA[Description 555 Timer with adjustable duty cycle Frequency - about 4.5kHz Produces square wave Schematic Gallery Top View Bottom View (don't buy cheap soldering iron) 50% duty cycle 30% duty cycle Notes]]></description><link>http://direct.ecency.com/electronics/@sodnupta/prototype-board-1-555-timer-adjustable-duty-cycle</link><guid isPermaLink="true">http://direct.ecency.com/electronics/@sodnupta/prototype-board-1-555-timer-adjustable-duty-cycle</guid><category><![CDATA[electronics]]></category><dc:creator><![CDATA[sodnupta]]></dc:creator><pubDate>Sat, 28 Jul 2018 18:40:54 GMT</pubDate><enclosure url="https://i.ecency.com/p/D5zH9SyxCKd9GJ4T6rkBdeqZw1coQAaQyCUzUF4FozBvW7DkpcndUS9DStnTC2UgzrwaAA8MCYtkN2PHZH6FzzgGWmvw8t2HkmgfeKbiG4giwiySk3p8J8Dpa61ABdYBqLLKpJ?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Oscilloscope capture 4: Button bouncing and mitigation]]></title><description><![CDATA[Problem: LED turned on by a mechanical switch causes "bouncing" of voltage An LED is turned on and off by a rocker switch. Voltage is measured across the LED. The switch, as with other mechanical]]></description><link>http://direct.ecency.com/electronics/@sodnupta/oscilloscope-capture-4-button-bouncing-and-mitigation</link><guid isPermaLink="true">http://direct.ecency.com/electronics/@sodnupta/oscilloscope-capture-4-button-bouncing-and-mitigation</guid><category><![CDATA[electronics]]></category><dc:creator><![CDATA[sodnupta]]></dc:creator><pubDate>Wed, 25 Jul 2018 04:45:39 GMT</pubDate><enclosure url="https://i.ecency.com/p/54TLbcUcnRm3sWQK3HKkuAMedF1JSX7yKgEqYjnyTKPwrcsLXHaKGrU4tivQjsK9vWJWBuymEwV5s1HojKNBS7tQiD9RrUZh1GoYpYZzZ7Cj9qWoeQx7ySNnSL1QzHXDJ8cmPFjvn?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Oscilloscope Capture 3: Inductive Spike and Mitigation]]></title><description><![CDATA[Running DC motor with square wave Purple signal is the voltage at the transistor base, referenced to the common ground Yellow signal is the voltage at the transistor emitter, referenced to the common ground]]></description><link>http://direct.ecency.com/electronics/@sodnupta/oscilloscope-capture-3-inductive-spike-and-mitigation</link><guid isPermaLink="true">http://direct.ecency.com/electronics/@sodnupta/oscilloscope-capture-3-inductive-spike-and-mitigation</guid><category><![CDATA[electronics]]></category><dc:creator><![CDATA[sodnupta]]></dc:creator><pubDate>Tue, 24 Jul 2018 03:34:21 GMT</pubDate><enclosure url="https://i.ecency.com/p/3jpR3paJ37V8JxyWvtbhvcm5k3roJwHBR4WTALx7XaoRovZNfKUkb4vkgeedYrunKk2fYgJNJDNwqwQN6gL5kKqLFHnufayD9tPCq8rtSDMYSeS8n8qteyDjYUkisAU1YFcmc?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Oscilloscope Captures 7/14/18: Picking up switching controller noise from laptop charger]]></title><description><![CDATA[Charger Plugged to Laptop Frequency reads about 98kHz We can tell that the charger uses 100kHz switching controller to regulate the voltage. Charger plugged off. Switching frequency increased to about]]></description><link>http://direct.ecency.com/oscilloscope/@sodnupta/oscilloscope-captures-7-14-18-picking-up-switching-controller-noise-from-laptop-charger</link><guid isPermaLink="true">http://direct.ecency.com/oscilloscope/@sodnupta/oscilloscope-captures-7-14-18-picking-up-switching-controller-noise-from-laptop-charger</guid><category><![CDATA[oscilloscope]]></category><dc:creator><![CDATA[sodnupta]]></dc:creator><pubDate>Sun, 15 Jul 2018 03:28:42 GMT</pubDate><enclosure url="https://i.ecency.com/p/W5LtFUPm6g7111bbdcuxu3bfUg5qaCq8seb5paCtrrT7zS2nJrqgutQHrvcfyrs5zLVtCkwFpw5rpfw8Xx13vB1NUpeiE4fCk9xEARJEHqthQXP4L8AJQ4GBaqQMSQ3o3gcsGiwEsNBwc2YFxstJZqzXon9nn?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Project 4: Regulated Linear DC Power Supply - Version 1]]></title><description><![CDATA[Description: Input Voltage: 120VAC Output Voltage: 9VDC Rated Current: 1A Power Factor: 0.50 Components: NEMA 1-15 power cord -> Not grounded 300mA fuse -> Protects the circuit from over-current]]></description><link>http://direct.ecency.com/power/@sodnupta/regulated-linear-dc-power-supply-version-1</link><guid isPermaLink="true">http://direct.ecency.com/power/@sodnupta/regulated-linear-dc-power-supply-version-1</guid><category><![CDATA[power]]></category><dc:creator><![CDATA[sodnupta]]></dc:creator><pubDate>Mon, 09 Jul 2018 05:28:12 GMT</pubDate><enclosure url="https://i.ecency.com/p/54TLbcUcnRm3sWQK3HKkuAMedF1JSX7yKgEqYjnyTKPwrcaL1pKJkATgQWWzvLwPtPhtKpBWDqSayVd8WBCJkr2DyukaZNqS4NXhiKEwYmYEwykGSMQ81vwAKkXUcbq4MaVhFchkr?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Oscilloscope Captures]]></title><description><![CDATA[7/3/18 Music from audio jack 7/1/18 RS-232 serial communication from DHT11 sensor 6/30/18 DC Motor Noise]]></description><link>http://direct.ecency.com/oscilloscope/@sodnupta/oscilloscope-captures</link><guid isPermaLink="true">http://direct.ecency.com/oscilloscope/@sodnupta/oscilloscope-captures</guid><category><![CDATA[oscilloscope]]></category><dc:creator><![CDATA[sodnupta]]></dc:creator><pubDate>Mon, 02 Jul 2018 04:37:42 GMT</pubDate><enclosure url="https://i.ecency.com/p/6VvuHGsoU2QBt9MXeXNdDuyd4Bmd63j7zJymDTWgdcJjo12Ggz3dFqFuxr2NHKDWeCiSs6uPSAjMdYuH8f4kam56L5oHfKNSG1t3g9D5PrTWRm7V2Dwf5jmcSsCYyc?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[First oscilloscope! Siglent SDS 1102CML+]]></title><description><![CDATA[General Specs Bandwidth: 100MHz Real Time Sample Rate: 1GSa/s Channel: Dual Memory Depth: 2Mpts Rise Time: 3.5ns Vertical Resolution: 8 bit Price: $299 Two passive 100MHz probes included Startup Screen]]></description><link>http://direct.ecency.com/oscilloscope/@sodnupta/first-oscilloscope</link><guid isPermaLink="true">http://direct.ecency.com/oscilloscope/@sodnupta/first-oscilloscope</guid><category><![CDATA[oscilloscope]]></category><dc:creator><![CDATA[sodnupta]]></dc:creator><pubDate>Thu, 28 Jun 2018 03:38:06 GMT</pubDate><enclosure url="https://i.ecency.com/p/4i88GgaV8qiFU89taP2MgKXzwntUGAvkoQiKU7VxyD37q9bq6PH3bDRg1QcqgBvaffj37zCemLX93qR7repuc3uJMX6xyn4P5Zfz84jhdcL846WfN1BGYJn638?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Project 3: Arduino, HC-SR04 Ultrasonic sensor, NRF24L01 transceiver, Active buzzer]]></title><description><![CDATA[Description: Ultrasonic alarm system Arduino 1: As a person comes closer to the ultrasonic sensor, an active buzzer will ring with higher frequency. The LEDs will also turn from green, yellow, to red based]]></description><link>http://direct.ecency.com/arduino/@sodnupta/project-3-arduino-hc-sr04-ultrasonic-sensor-nrf24l01-transceiver-active-buzzer</link><guid isPermaLink="true">http://direct.ecency.com/arduino/@sodnupta/project-3-arduino-hc-sr04-ultrasonic-sensor-nrf24l01-transceiver-active-buzzer</guid><category><![CDATA[arduino]]></category><dc:creator><![CDATA[sodnupta]]></dc:creator><pubDate>Fri, 22 Jun 2018 19:40:09 GMT</pubDate><enclosure url="https://i.ecency.com/p/HNWT6DgoBc14riaEeLCzGYopkqYBKxpGKqfNWfgr368M9Ws3XV88f9RmqovR4bHUPkwha3KfrgnpN9XNyWfr5XENQSGiUHehHCsSo3hhDntwE4tbKZX7qNmSpEJ?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Project 2: Arduino, DHT11, DC motor and LCD display]]></title><description><![CDATA[Description: Read humidity and temperature data from DHT11 sensor Display humidity and temperature data on LCD module Turn on the fan (DC motor) when the temperature reaches 25C Increase the fan speed]]></description><link>http://direct.ecency.com/arduino/@sodnupta/project-2-arduino-dht11-dc-motor-and-lcd-display</link><guid isPermaLink="true">http://direct.ecency.com/arduino/@sodnupta/project-2-arduino-dht11-dc-motor-and-lcd-display</guid><category><![CDATA[arduino]]></category><dc:creator><![CDATA[sodnupta]]></dc:creator><pubDate>Mon, 18 Jun 2018 02:53:00 GMT</pubDate><enclosure url="https://i.ecency.com/p/qjrE4yyfw5pEPvDbJDzhdNXM7mjt1tbr2kM3X28F6SraZekEL4soPhynmDoyG4zFr4YfyY1QX7ox7Esghbu5kv9ACmF8zLQ2TwbcgMfh8mPx8FSR6sossCPp?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Project 1: Blinking LED]]></title><description><![CDATA[Description: Generate square wave output using IC555 Pulse width modulation with diodes Adjust frequency with resistors Components: NE555P x 1 10kOhm resistor x 2 1N4007 diodes x 2 10uF capacitors x 2]]></description><link>http://direct.ecency.com/hardware/@sodnupta/project-1-blinking-led</link><guid isPermaLink="true">http://direct.ecency.com/hardware/@sodnupta/project-1-blinking-led</guid><category><![CDATA[hardware]]></category><dc:creator><![CDATA[sodnupta]]></dc:creator><pubDate>Tue, 05 Jun 2018 16:09:12 GMT</pubDate><enclosure url="https://i.ecency.com/p/JvFFVmatwWHRfvmtd53nmEJ94xpKydwmbSC5H5svBACH7xrYhbKYZfuPMPuV6F3TFnn6A5Es21pZaoWPEra1dikCLZbzurzjYx4tx8mY2sSjE2ZMKXbz1zEessQk47BBTpRvg2kRGz?format=match&amp;mode=fit" length="0" type="false"/></item></channel></rss>