Create Your Own Solar Powered Raspberry Pi Weather Station

In this Instructable you will learn: How to build a solar powered system How to design and size the panels and batteries How to gather data to analyze your system performance How to wire up a Raspberry Pi to a solar power system How to safely turn a Raspberry Pi on and off Building 3D Printed Parts for WeatherPi And most importantly, have fun doing it! SwitchDoc Labs is pleased to offer 10% off all our prod ...

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DIY Soldering Robot – Project Completed

The DIY soldering robot which we have been building in our spare time over the past few months is now working and we have been able to solder some test Raspberry Pi expansion board headers with the machine. Before starting on this robot we looked at the various commercial soldering systems that are available.  Wave soldering machines would have been impractical as the connector is on the top side of the boa ...

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Dog Repellent Ultrasonic Circuit 2

When we hear the word “Ultrasonic" we often refer it to bats and dolphins communication. Technically, “Ultrasonic" applies to sound that is anything above the frequencies of audible sound, and includes anything over 20kHz. Frequencies used for medical diagnostic ultrasound scans extend to 10 MHz and beyond. This dog repellent ultrasonic circuit will chase away angry dogs. It comprises of a 555 timer IC, a s ...

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PROPEL Program Seeks Startups with Innovations in Distributed Sensing & Intervention

Boston, MA – April 16, 2015 – Access to external feedback early in the development process is critical for building successful innovative products. For large companies, such access is easily obtained; for startup companies, however, industry feedback is hard to come by. To assist entrepreneurs in that effort, Fraunhofer TechBridge (a program of Fraunhofer CSE) and Greentown Labs have teamed up to launch PRO ...

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3A Power supply for USB devices

This is 5V 3A power supply to drive two USB based devices simultaneously. This power supply is design around LM2576-5.0 switching regulator IC and the main reasons to choose this IC is its low parts count, small heat sink requirements and its inbuilt current limit protection feature. We specially design this power supply to work with development boards / single board computer (SBC) platforms such as Raspber ...

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Multi-pole industrial relays provide more possibilities

As we know, a relay is a very versatile component, able to realize also various “sequential” circuits, when for example by switching one relay we´ll switch on a target device and at the same time we´ll enable (or disable) switching of another relay. In these case, it´s an often demand for a relay to have a sufficient number of poles. Majority of such “logic” circuits can be realized even with a common 1-2 p ...

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LT8640 – 42V, 5A Synchronous Step-Down Silent Switcher with 2.5μA Quiescent Current

Features Silent Switcher® Architecture Ultralow EMI/EMC Emissions Spread Spectrum Frequency Modulation High Efficiency at High Frequency Up to 96% Efficiency at 1MHz Up to 95% Efficiency at 2MHz Wide Input Voltage Range: 3.4V to 42V 5A Maximum Continuous Output, 7A Peak Transient Output Ultralow Quiescent Current Burst Mode® Operation 2.5μA IQ Regulating 12VIN to 3.3VOUT Output Ripple < 10mVP-P Fast Mini ...

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RoomMote- Control the color and sockets of your Room using a Remote, MSP430 and Energia

So, why not just use a remote to turn it back off and maybe add some other things like Reading Light control, Mood Lighting? Interesting !! Having the above in mind I thought of building my own Room Automation and Mood Lighting controller and for this time make it look good and "no mess visible". I had bought some nice overpriced project enclosures a while back and the bigger one of them would be perfect fo ...

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TSL2584TSV Ambient Light Sensor

The TSL2584TSV is a very-high sensitivity light-to-digital converter that transforms light intensity into a digital signal output with a fast-mode I²C interface. The device combines one broadband photodiode (visible plus infrared), one infrared-responding photodiode, and a photopic infrared-blocking filter on a single CMOS integrated circuit. Two integrating analog to Digital Converters (ADCs) convert the p ...

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IrDA Interface for Portable Devices

The circuit uses a SC16C650 to implement an IrDA interface. Infrared Data Association (IrDA) has defined a group of short-range, high speed, bidirectional wireless infrared protocols, generically referred to as IrDA. The hardware section is composed of SC16C650 which is electrically hooked-up to an IrDA transceiver module. The electrical connection between the SC16C650 and an IrDA transceiver module is very ...

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