Raspberry Pi
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Raspberry Pi
A complete ARM GNU/Linux computer for $25.
(also covering Arduino and BeagleBone)
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Better Sailing Computers With Wearable Electronics

Better Sailing Computers With Wearable Electronics | Raspberry Pi | Scoop.it
Sailing - specifically small boats in regattas - is a hobby that requires a lot of skill. Like any hobby, there are devices and electronics to make the hobby easier. For sailing, its tactical sailin
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Chariot is the ultimate web-of-things solution for Arduino

Chariot is the ultimate web-of-things solution for Arduino | Raspberry Pi | Scoop.it
Chariot Arduino Web of Things Shield Powered by Atmel
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PIK3A: The Raspberry Pi 3 IKEA Retro Gaming Table | element14 Community

PIK3A: The Raspberry Pi 3 IKEA Retro Gaming Table | element14 Community | Raspberry Pi | Scoop.it
Lisez à propos de 'PIK3A: The Raspberry Pi 3 IKEA Retro Gaming Table' sur element14.com. NEW!
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AAA powered Arduino

AAA powered Arduino | Raspberry Pi | Scoop.it
MAKE Flickr Pool member Funax made an Arduino-compatible board powered by a single AAA battery. A step-up converter is used to boost the battery's 1.5V out | See more about Arduino.
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ZeroBorg - Robotics for the Raspberry Pi Zero

Timothy Freeburn is raising funds for ZeroBorg - Robotics for the Raspberry Pi Zero on Kickstarter!

ZeroBorg; a brand new small but powerful motor controller and sensor board for the Raspberry Pi Zero.
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Thermohygrometer with clock and LCD display on Arduino UNO

Thermohygrometer with clock and LCD display on Arduino UNO | Raspberry Pi | Scoop.it
These 7 steps will drive you through the "construction" of a thermo-hygrometer with clock on Arduino UNO.Data and time, humidity and temperature will be shown on a LCD 16x2 display .If you have purchased a LCD display and want to know how to...
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Insta-Arduino | Interfacing #Raspberrypi with #arduino wireless...

Insta-Arduino | Interfacing #Raspberrypi with #arduino wireless... | Raspberry Pi | Scoop.it
Interfacing #Raspberrypi with #arduino wireless message sending to LCD screen by mobile. by namit_1089 @ http://ift.tt/1UD29Q2
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Raspberry Pi • View topic - Can't connect to wifi

Raspberry Pi • View topic - Can't connect to wifi | Raspberry Pi | Scoop.it
Hello everyone I got my pi 3 recently and it has been working great then randomly one day I get this issue and I have looked about everywhere trying to figure out how to fix it. I know the pi 3 has on board wifi but for some reason it will not work now. I have to plug it into an Ethernet cord for it to work and I would love if someone could help me with this. wifi.jpg (57.37 KiB) Viewed 32 times wifi error.jpg (47.31 KiB) Viewed 32 times with ethernet.jpg (63.53 KiB) Viewed 32 times
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topshed/PiBots

topshed/PiBots | Raspberry Pi | Scoop.it
Rise of the Robots A CodeClub:Raspberry Pi Project This repo contains the worksheets, example code and STL files that I've put together for the robotics project I'm running at Cranmere Primary school Codeclub. Currently finished worksheets: 1) Introduction 2) Single motor 3) Two motors 4) Ultrasonic eyes You can find a BOM for the various components here. The STL files for 3D printing your own chassis are also included although you can make your own cassis out of cardboard, balsa wood on any material to which you can screw (or stick) the motor brackets. I will update this with additional worksheets and code as they are created. Coming soon: Adding a controller.
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DoorSensor using aurdino and raspberry pi

Project by Ranaq Mathur, Gaurav Bajaj, Ishan Arora, Ram Karan Daga
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Controlling Arduino Robot Arm with Arm Link Software

Controlling Arduino Robot Arm with Arm Link Software | Raspberry Pi | Scoop.it
Want to be cool like Simone Giertz but don't know where to start? The InterbotiX Arm Link Software provides a simple interface for Arduino-Compatible Robot Arms. Using this software you can control the Robot Arm via a variety of movement modes including Cartesian IK mode, Cylindrical IK mode, and Backhoe/Joint mode. In addition to directly controlling your Robot Arm, the Arm Link software can also activate digital outputs, read analog inputs, play motion sequences, and display webcam feeds. This software is offered as a simple control solution for these Robot Arms as well as an example for individuals who wish to integrate the Robot Arms into their own applications and systems. InterbotiX Arm Link is an open source program written in Java in the Processing environment. The Arm Link Software is currently compatible with: RobotGeek Snapper Arduino Robotic Arm PhantomX Pincher Robot Arm Kit Mark II PhantomX Reactor Robot Arm Kit WidowX Robot Arm Kit Mark II For this instructable, we will cover the setup and usage of a RobotGeek Snapper Arm with the Arm Link Software. If you'd like to set up one of the InterbotiX arms, you can follow this guide, which will get you set up with the proper firmware for your robot arm.
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Download Arduino Sketches: Tools and Techniques for Programming Wizardry PDF

http://j.mp/1pwDq2K
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Control arduino via serial port over web application

Control two small dc motors only for test proposes, using serial port to send commands to Arduino and sockejs to send commands over the internet.
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Cubetto - Hands on coding for ages 3 and up

Primo Toys is raising funds for Cubetto - Hands on coding for ages 3 and up on Kickstarter!

A playful programming language you can touch. Montessori approved, and LOGO Turtle inspired. Learn programming away from the screen.
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The Raspberry Pi Education Manual Teaches You Basic Computer Science Principles

The Raspberry Pi Education Manual Teaches You Basic Computer Science Principles | Raspberry Pi | Scoop.it
Whether you have a new Raspberry Pi and are just figuring out what you can do with it or don't have your hands on one yet but want to get started learning more | See more about Computer Science, Raspberries and Education.
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Whisper Node is an Arduino-compatible board with a built-in RF module

Whisper Node is an Arduino-compatible board with a built-in RF module | Raspberry Pi | Scoop.it
This low-power, ATmega328P-based dev board can run projects for years using just a single AA battery.
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BBC micro:bit Enables a Million UK Children to Start Coding

BBC micro:bit Enables a Million UK Children to Start Coding | Raspberry Pi | Scoop.it
Starting today, close to one million students in the United Kingdom will begin receiving the BBC micro:bit, a highly flexible, programmable embedded device that was created with the objective of "helping this generation to be the coders,...
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Learning What Sounds Are Made of Using Sound Blocks | Make: DIY

Learning What Sounds Are Made of Using Sound Blocks | Make: DIY | Raspberry Pi | Scoop.it
This Arduino-based learning tool shows you how sounds are constructed
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OpenTrashCan: A Smart Internet Connected Trash Can That Talks

OpenTrashCan: A Smart Internet Connected Trash Can That Talks | Raspberry Pi | Scoop.it
OpenTrashCan connects to your wifi network and sends you an email when its full, talks to you, and can even be controlled from the OpenTrashCan App for Android phones. See it in action here: Want to buy one?
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Raspberry Pi • View topic - Tutorial: Compile VLC with HW acceleration - Jessie, RPi 2/3

Raspberry Pi • View topic - Tutorial: Compile VLC with HW acceleration - Jessie, RPi 2/3 | Raspberry Pi | Scoop.it
gkreidl wrote: cjan wrote: one question, SDL --vout : software YUV SDL output, so which video codec using? Selected automatically by VLC. ok, try vlc --vout sdl 720p.mp4 and it work. which codec?
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Optimizing Arduino and the AD9851 DDS signal generator

Optimizing Arduino and the AD9851 DDS signal generator | Raspberry Pi | Scoop.it
Optimizing Arduino and the AD9851 DDS signal generator Steve Sandler -February 10, 2016 Arduino has taken the product “maker” world by storm and one of the more popular Arduino modules is the Analog Devices AD9851 DDS waveform generator. An Internet Web search for “Arduino DDS” showed more than 100,000 results, while the same video search turned up many dozens of videos. Internet forums are filled with discussions related to two specific issues. One issue is that the output amplitude is not constant with frequency, requiring a level control loop. The second issue is that the distortion gets pretty horrific, particularly at higher output frequency settings. In this article, we’ll show how to correct these issues, as well as providing some additional tips for improving the quality of the output. DDS basics While this article concentrates on the AD9851 device, Analog Devices produces many others that operate in a similar fashion. The devices combine a clock reference with a digital divider and a phase locked loop to provide a sinewave output with very fine resolution. In the case of the AD9851, the digital divider is 32 bits and the clock frequency is typically 125 MHz. This results in a frequency resolution of approximately 30 milli-Hz. A single resistor, Rset controls the current output level and therefore the output voltage level. The digital nature of the DDS process results in an output signal and many signal images. The images follow a sin(x)/x envelope. This envelope is shown in the Analog Devices website and is shown in Figure 1. Figure 1 Sin(x)/x envelope from the AD9851 datasheet. From this figure it is easy to see that as the output frequency increases the first system image and the output frequency move closer together, while at the same time the amplitude of the image increases. The AD9851 DDS board is shown connected to an Arduino in Figure 2. The Arduino is used to set the DDS output frequency. A DC block, the Picotest J2130A (shown in the figure, www.picotest.com) or the P2130A 500Hz - 8GHz Blocker, is used to connect the DDS output to a 50Ω oscilloscope port to view the spectral response. The unfiltered AD9851 output is measured so that we can see the digital spectrum rather than the filtered output. Figure 2 A popular AD9851 DDS module from Ebay is shown connected to an Arduino UNO via the Picotest J2130A DC blocker. The Arduino is used to set the output frequency of the AD9851. The output frequency is set to 3 MHz and the unfiltered output spectrum is shown in Figure 3. As expected we can see the 3 MHz fundamental as well as the first and second images at 122 MHz and 128 MHz, respectively. The clock feedthrough is also visible in this measurement at 125 MHz. The images are far from the 3 MHz fundamental making them simple to filter using a low pass filter. Figure 3 The DDS unfiltered output spectrum with a 3 MHz output frequency. The output frequency is set to 50 MHz and the unfiltered output spectrum is shown in Figure 4. Now we can see the first and second images appear at 75 MHz and 175 MHz respectively, as expected. The first image amplitude is only 2.5 dB lower than the fundamental and also less than an octave from the fundamental, making it difficult to filter. Figure 4 The DDS unfiltered output spectrum with a 50 MHz output frequency. Further increasing the frequency to 60 MHz the unfiltered output spectrum is shown in Figure 5. Now we can see the first and second images appear at 65 MHz and 185 MHz respectively, again as expected. Now the first image amplitude is only 0.5 dB lower than the fundamental and very close to the fundamental, making it even more difficult to filter. Figure 5 The DDS unfiltered output spectrum with a 60 MHz output frequency.
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Raspberry Pi • View topic - Are you a Raspberry Pi-oneer?

Raspberry Pi • View topic - Are you a Raspberry Pi-oneer? | Raspberry Pi | Scoop.it
You missed 2012 and I really hate polls.
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Raspberry Pi • View topic - RPi 3 SoC at nearly 100 °C, reporting 80 °C

Raspberry Pi • View topic - RPi 3 SoC at nearly 100 °C, reporting 80 °C | Raspberry Pi | Scoop.it
chrisoh wrote: There seems to be an inconsistancy somewhere. Gareth Halfacree's findings indicate the Pi's internal sensor reporting < 80C when it's actually at almost 100C, well past the auto-throttling stage and into the 'will possibly damage the chip' range. When the Pi thinks it has reached 85C, it's actually already at 110C or possible 120C+. Read it again. He found a temperature differential of 17C. If the sensor is reading 85C then the camera may see 102C. Where have you read that 100C will possibly damage the chip? ric96 wrote: The RPF should provide a heat sink with the pi3 or at least sell a good quality one separately. The RPF do not sell Pi's. It's not a bad idea for them or the distributors to sell heatsinks though.
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My Ninth Project: Robot Arm with Joystick Shield

My Ninth Project: Robot Arm with Joystick Shield | Raspberry Pi | Scoop.it
Although it is great controlling the robot arm with computer or mobile phone, I think using joystick is also cool, so I've bought a joystick shield and make a new project. This joystick shield is compatible with Arduino. It also support Nokia 5110 LCD module, nRF24L01 wireless module and Bluetooth module. It should be fun and convenient for various projects. : )
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Download Beginning C for Arduino, Second Edition: Learn C Programming for the Arduino PDF

http://j.mp/1pwOj4D
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