AmpStrike – Battery Powered Bench Power Supply

Jakub Felcenloben [email protected] 2450 Introduction This is a small bench power supply that is powered by two lithium-ion batteries. The project was inspired by Dave Jones from EEVblog but the design is completely mine. The voltage range is 0-20V regulated in 10mV steps and maximum current is 1A with current limit set in 1mA steps. Schematic ampStrike_schematic Linear Voltage Regulator The power supply ...

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Find IP Address via Morse Code

Have you ever connected your Raspberry Pi to a new Ethernet cable but don't have a monitor to see its new IP address? Or maybe you don't want to connect a monitor, keyboard, and mouse to search for the IP address when you don't plan on using any of the three? Morse Code This project will run a Python script on startup that grabs the IP address of your Raspberry Pi and outputs it to a GPIO port through Morse ...

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ESP8266 Weather Widget

  Welcome to my new Weather Widget Project. A weather widget is a application that can be downloaded on your PC, laptop or a mobile device and perform the job of providing easy access to weather information.But I was always trying to make something different.So I go through the internet to get some ideas.After few days of my work, finally I made it.I am sharing this so that any one can make it easily. ...

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21.1% efficiency with Perovskite solar cells

17.03.16 - EPFL scientists achieve the highest yet reproducibility for perovskite solar cells combined with a boundary-pushing 21.1% efficiency at normal operating conditions. Perovskite solar cells hold much promise for cost-effective solar energy. However, heat stability is an issue, and can significantly limit the solar cell’s long-term efficiency. A team of scientists led by Michael Grätzel’s lab at EPF ...

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Making the LED Installation at Visit Trondheim

NICE and Bjørke Arkitektur had this awesome idea on how to create a really mesmerizing entrance at Trondheim’s new tourist information, named Visit Trondheim. It should among other things include a moss coated interactive LED installation. As you may know, LEDs is something we really like working with here at Norwegian Creations. And luckily for us, Bjørke and NICE knew this, so they let us take part of thi ...

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Raspberry Pi 2 IoT: Thingspeak & DHT22 Sensor

Introduction This project uses a Raspberry Pi 2 to collect temperature and humidity data from a DHT22 sensor, which is then uploaded to the ThingSpeak Internet of Things platform to be displayed in real-time. This write-up is primarily intended to serve as documentation for the project, but may also be of use as a tutorial for others. It assumes a beginner skill level and that you are running the Raspberry ...

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Circuit Cobbling’ the Riffle Data Logger

I always considered circuit boards like this something you bought, not something you made. Not any more. I actually helped to make the board in the picture above. And it was awesome fun. The board is designed to monitor the conductivity (and, possibly, contamination) of water in lakes and streams, with the wonderful feature that it fits through the mouth of a regular water bottle. It’s called Riffle and it ...

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Windows 10 IoT Plant Monitoring System

Project Intro This project is aimed to create a plant monitoring and watering system. The main task is to control the servo, relay and collect the soil humidity data from the plants. Huge amount of the sensors use analog signal as output but the Raspberry Pi doesn’t have an analog-to-digital converter. To solve this problem, I used an outer ADC module and an Arduino gateway because they have built in ADC. W ...

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Monolithic linear battery charger operates from inputs up to 60V

  LTC Design Note: Monolithic linear battery charger operates from inputs up to 60V IntroductionFor charging relatively low capacity batteries, or maintenance charging backup and keep-alive batteries, linear topology battery chargers are valued for their compact footprints, simplicity and affordability. Even so, there is a dearth of linear chargers that accept a 10V or higher input voltage, leaving man ...

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Home Control with a Raspberry Pi and Z-Wave

Intro In a previous post, I showed you an Arduino based controller to manage the lighting system in the house. Such a device is useful for handling the basic 'electrical' stuff such as lights, doorbells, gates, knobs and buttons. For other home automation/control desires, you often need to put special purpose devices in difficult locations, such as roller-shutters near the windows, RGB-controllers in the ce ...

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