MBusConnector

Introduction IoTSyS is an integration middleware for the Internet of Things. It provides a communication stack for embedded devices based on IPv6, Web services and oBIX to provide interoperable interfaces for smart objects. The IoTSyS middleware aims providing a gateway concept for existing sensor and actuator systems found in nowadays home and building automation systems (KNX, BACnet, ZigBee, Wireless M-Bu ...

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Raspberry Pi and Arduino Serial Communication

Setup and Connections Connect the output of the Arduino TX pin to a voltage divider.  The output of the voltage divider is then connected to the RPi GPIO pin # 10 (GPIO 15).  The voltage divider drops Arduino TX voltage from 5V to 3.3V.  In my case, I used 2 10K resistors connected in parallel and 1 10K resistor attached to ground (See schematic below). The RPi TX GPIO pin #8 is attached to the base of an N ...

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Using a keypad with Raspberry Pi

I got two keypads from Jameco.com that I wanted to use with my Raspberry Pi. Turns out it's quite easy, as long as you know what the pinout structure is for the keypad. This instructable will take you through the steps I had to go through to discover the pinout on my keypads, and how I hooked it up to my Raspberry Pi. I'll include the code I'm currently using to "drive" my keypad, and then offer some "next ...

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Raspberry Pi & Soundmodem – It works!!

(Part 01) Many months ago I was working on getting a Raspberry Pi working for APRS work. I was experiencing a ton of issues with getting soundmodem to decode aprs signals that were known to be good (ie. ideal recording played back as an MP3 file, no RF involved). Most recently, I have managed to get the Raspberry Pi and soundmodem to play nicely with a USB soundcard (the Creative SB1140)! Finally some succe ...

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RasTherm – A Smart Thermostat built on the Raspberry Pi

This page presents my implementation of a smart thermostat using the Raspberry Pi board as the controller, with an added Pi Plate expansion board. This thermostat is controlled using a web page interface, so it can be controlled via any personal computer, smart phone or tablet with a regular browser. There is even a possibility to control it using another application via TCP/IP socket messages. DISCLAIMER: ...

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Raspberry Pi & Arduino: a laser pointer communication and a LDR voltage sigmoid

Plugging the laser module on Arduino Isn’t easy to plug a module when you have no datasheet or some wiring schemes, the chances are that you’ll probably burn it if you provide a current greater than the supported. The module I have was bought on the DX.com and it came with 3 pins, “-” mark, “S” mark and a middle pin without any mark, I assumed that the “S” meant “Signal” and the “-” is the GND pin so I star ...

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Raspberry Pi I2c Interfacing and Programming

I2C is a multi-device bus used to connect low-speed peripherals to computers and embedded systems. The Raspberry Pi supports this interface on its GPIO header and it is a great way to connect sensors and devices. Once configured you can connect more than one device without using up additional pins on the header. Before using I2C it needs to be configured. This technique has changed slightly with the latest ...

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PiGI – Raspberry Pi Geiger-Müller Interface

Geiger counters are basically just devices which enable us to measure ionizing radiation. In the context of human activity we have to deal with natural radiation sources and artificial ones. Some of the materials emitting ionizing radiation are used to create electricity, others were used to stockpile thermonuclear bombs, so many could get scared and a few could get rich. But how do we deal with some thing ...

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LapPi – A Raspberry Pi Netbook

The Raspberry Pi is a remarkable machine. Lightweight, powerful, and until now it was completely tethered to a wall socket. The LapPi is built to free the Pi! It's made from a mixture of spare parts, unallocated electronics, and scrapped components & cables I have built it in response to the Raspberry Pi Challenge. The challenge was picked up on the 15th of October via retweet from @raspberry_pi, and by ...

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MBeat USB-M7HUB 7 port hub

The Raspberry Pi is often not able to supply enough power to USB peripherals through it’s own power supply and a USB hub is recommended to ensure power drops don’t cause problems in the processor.  This means you will need two plug packs. One to power the Pi and one to Power the hub. The setup is illustrated in the diagram to the left. Red lines represent the power lines, the blue line the USB type B connec ...

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