Raspberry Pi power circuit

overview The Pi project's power system is based on the Arduino Watchdog timer with RTC module. The ATMega 328p with Uno bootloader is used to check the time from the RTC module, If the returned time matches the defined times in the Arduino code, the raspberry Pi is activated via the relay, else sleep for another 8s Items 1x Raspberry Pi - model B 1x ATMega328p with Uno Bootloader 1x 16MHz Crystal Oscillator ...

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//build: Hands-on-lab WeatherStation

The new Windows.Devices namespace from the Universal Windows Platform (UWP) APIs in Windows 10, enable developers to leverage the power of Windows while interacting with the real world via sensors and actuators. This project uses the I2C bus and general purpose input/output (GPIO) ports available on the Raspberry Pi 2, to create an internet connected weather station using the SparkFun weather shield. The in ...

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The Occam’s Microcontroller Rig

The intention of the article is to highlight opportunities presented by incorporating simple modern digital methods in the design of SPRAT-style radios - not to promote one particular design. The ideas in the article have been demonstrated in the construction of a simple rig, a picture of which appears on the front cover of SPRAT 156 and is repeated here... The example schematics presented in the article, a ...

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Raspberry Pi 2 Model B – BCM2836 PDF Download

The Broadcom chip used in the Raspberry Pi 2 Model B The underlying architecture in BCM2836 is identical to BCM2835. The only significant difference is the removal of the ARM1176JZF-S processor and replacement with a quad-core Cortex-A7 cluster. [caption id="attachment_5815" align="aligncenter" width="615"] Raspberry Pi 2 Model B - BCM2836 PDF Download[/caption] Cortex-A7 MPCore processor The Cortex-A7 MPCo ...

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Alarm Electronics

Above and below are the diagrams of the electronics that will interface the alarm system sensors with the Raspberry Pi. The first diagram is a conventional electronics schematic and the second is how you can build the circuit prototype on a bread board.   We have shown two identical circuits representing two contacts in your alarm system. You can repeat the pattern as many time as you like, but within the l ...

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The BeagleBone Revisited

As the BeagleBone approaches one year old a look how it compares with its slightly younger, not-so-distant but arguably more glamorous relative, Raspberry Pi. When the BeagleBone was announced it caused quite a stir with its combination of a reasonably powerful ARM-based SoC, hacker-friendly nature and low price point. However, it wasn't long before it was eclipsed by the similar but even lower cost Raspber ...

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Raspberry Pi 433Mhz RF Communication Via ATtiny85

The Experiment: In this experiment were going to explore the possibility to replace the Arduino UNO Wireless Weather Station web server, with a Raspberry Pi Web Server. Will use an ATtiny85 to convert the 433Mhz data stream from the remote Weather Station to RS232. The Raspberry Pi will poll the serial port and convert the received ATtiny serial data to .xml file for the flash Web Weather Station plugin. Ta ...

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Download Windows 10 for Raspberry Pi 2

Microsoft has followed up on its February promise to make Windows 10 available for the Internet of Things and has finally shipped a preview of the operating system for the Raspberry Pi 2. The RBP 2 isn’t the only device supported — the new Windows 10 IoT Core Insider Preview (we didn’t name it, don’t blame us) is also available for the MinnowBoard Max. [caption id="attachment_5115" align="aligncenter" width ...

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The World’s First Cloud Texting Enabled Raspberry Pi Powered Espresso Machine

Zipwhip is a cloud texting company. That means our goal is to give users a way to send and receive their texts from the cloud. Texting is a very important medium in our lives and yet it’s been stuck on our mobile phones forever. Why can’t we send a text from the web, our desktops, tablets, iPads, Kindle Fires, or even the family T.V.? We can send email from all those places so why not texts? With Zipwhip yo ...

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Juice4Halt – Supercapacitor UPS for Raspberry Pi

The Story When we started thinking about using the Raspberry Pi in applications requiring a bit more reliable operation, we always had to face the same problems: Power outages Corrupted file systems or SD-cards Brownouts Inrush currents As a solution to these problems, we have created the Juice4Halt module. It combines brownout protection and a short-term UPS for properly shutting down the Raspberry Pi. Ins ...

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