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March 2018

  • Aruba VAN SDN Controller (invalid user & password combination specified!)

    Hello, In this post, I will give the resolution of “invalid user & password combination specified” error by the Aruba VAN SDN Controller after fresh installation from the deb. package Ubuntu version for the SDN Controller. Problem: invalid user & password combination specified! Resolution: Re-installation of keystone. After that you can login to the system with default… Continue reading

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  • LM35 Temperature Sensor with Atmega328P

    LM35 is a precision  integrated-circuit temperature sensor. It’s output voltage linearly proportional to centigrade temperature. For example, 250 mV means 25°C. It does not require any external calibration circuitry. TheLM35 device is rated to operate over a -55°C to 150°C temperature range. In this post we will interface LM35 with Atmega328P 8-bit micro-controller.   Reference:http://www.electronicwings.com/sensors-modules/lm35-temperature-sensor You… Continue reading