Raspberry Pi and Arduino via GPIO UART

In an attempt to get my Raspberry Pi talking to my Arduino I’m exploring various different options. The first was to just use the USB connection, but that was too simple. So, here is how to connect the two using the UART on the GPIO pins of the Raspberry Pi. To make testing easier I wanted to keep the Arduino’s serial connected via USB to my PC so I can print messages there and read it with the Serial Monit ...

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RaspiDuinoRover – (Yet another) iPhone driven moving Raspberry Pi and Arduino rover

Architecture RaspiDuinoRover is made of three main parts: A Raspberry Pi which receives commands from a remote device through a TCP connection, and sends these commands to an Arduino Uno through an I2C connection. The same TCP channel is used to send back the remote data grabbed from the Arduino Uno about pan and tilt servo positions, camera lighting status and motors current usage. The Raspberry Pi also pr ...

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Setting up Raspberry Pi using SSH

So you just bought a Raspberry Pi (RPi) because you heard of it and you want to figure out what you can do with it ( like I did some time ago ). But now you have it you are watching ad it and asking yourself "what do I do next?". in the beginning I found It quite difficult to set the RPi up but now I have done it a couple a times I would like to share with you how I do it now and I will also let you downloa ...

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Setting up and running NOOBS on a Raspberry Pi

In this instruction I will go over how to set up the Raspberry Pi and boot it into NOOBS for the first time. It is important to understand how to set up all of the hardware and how to set up the actual operating system for the Raspberry Pi to ensure that everything works correctly. The only knowledge needed for this project will be a basic understanding of computers, both software and hardware, also Linux k ...

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Raspberry Pi Website Hit Tracker

You just made a funky neon sign flash in my living room. How? I have just completed my latest project which is a neon lamp which lights up every time someone visits my website. It’s controlled by a little relay board I built out on an Adafruit permaproto board and connected to a Raspberry Pi. The Raspberry Pi is running a simple python script which generates an event every time someone loads this page. I’ve ...

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Use a bare Arduino as an RF signal processor for Raspberry PI

433mhz RF transmitters and receivers are really cheap, so you might be tempted to add a RF receiver to your Raspberry PI. But there is one problem: the Raspberry PI may not be fast enough, or may be blocked totally while it tries to keep up with handling and filtering all the RF signals that it receives. To alleviate the Raspberry PI from all this signal processing, we can use an Arduino. There's even no ne ...

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AVC: Serial to I2C Bridge

I finished designing, etching and silkscreening a new board last night and started populating it. It's a slight redesign of a board I did before last year's AVC. What's it for? Not telling yet. :) I can say this. It's an Arduino clone that will speak serial on one set of pins via NewSoftSerial and I2C on the standard set of pins. It has an FTDI header for programming via bootloader. The design implements so ...

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Raspberry Pi XBee SMT backpack

One of the earliest motivations for my work on the Raspberry Pi SPI driver was so that I could use some Digi XBee ZB SMT modules. These are basically the same as the normal XBee ZB modules for doing ZigBee with but are on little PCBs that you solder onto a carrier board—and they can speak SPI to the host processor instead of serial. I got several of these modules for a previous project that never material ...

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Raspberry Portable Pi Laptop

Portability would generally be the main challenge with projects such as this; it can be difficult to get power off grid. However, in my case this is one hurdle which I am able to easily overcome; as with all of my other projects I have been using the PiJuice as an integrated battery module, which is able to provide all of the features you would ordinarily find in your laptop's powering system. There's some ...

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MCP3008 Raspberry Pi Breakout hat

Howdy Y'all Back when I was working on the Raspberry Pi portable emulator that became the backseat system. I thought that I would want to use an analog joystick like several of the other builds. However I was trying to get it to work via the GPIO instead of USB bus. Unfortunately mid build I decided that a dedicated USB controller would be better for my Emulator console. However I still tinkered with the an ...

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