Pixel Pal Chip

Soldering Sunday Pixel Pal: Chip – Connect to Raspberry PI

chips

I’ve just received Chip – The Pixel Pal from Soldering Sunday.  It’s a very nice litte project. And I love the LEDs. They’re so biggggg ! :)

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Neostick1

Raspberry PI and Adafruit’s Neopixel Stick

For a project i’m working on, I had to connect a Neopixel Stick to my Raspberry PI – Although the Adafruit’s Learning Center is quite good (is really very very good), and the Neopixel Uber Guide is extensive, i could not find any information about the wiring of the Neopixel Stick.
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sound5

Give your Raspberry PI the power of Speech with Adafruit’s max98306

For a project I’m working on, one of the objectives is that the RPi be able to “speak” – just to have some fun.

The RPI can output audio through HDMI and the 3.5mm audio jack. Since I’m going to use the RPi for a small robot, the HDMI audio capabilities are of no interest. So, it only leaves the 3.5MM audio jack, but there’s a problem. The audio is not amplified. For some headphones it’s fine, but for a talking robot, the audio volume is just to low.
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l293d

Arduino L293D DC motors control

A long time ago, i wrote a little tutorial on how to use a L298 Dual H-bridge motor driver, but i thought i could go further and this time I tried with a L293D chip.

The L293D Chip is a Dual H-Bridge Motor Driver for DC or Step motors. It can handle two Motors or one step motor. It can power motors until 36V and 600mA of steady current  – Max of 1.2A.

The chip is easy to use and takes little space

In this tutorial will see how to use it to power 1 or 2 DC Motors

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addjquery

Adicionar / remover campos dinamicamente com Jquery

Neste pequeno post irei mostrar como adicionar / remover campos (ou linhas de uma tabela com campos) dinamicamente usando Jquery e processar os dados/argumentos com PHP e arrays, mostrando que mesmo dinamicamente é possivel manipular os dados.

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gpiobplus2

Connect a GPS to the Raspberry PI

After seeing an article about the Raspberry PI in the atmosphere with the PI in the Sky Project, I’ve decided why not try it ? Since I don’t have access to a telemetry board, I’ve decided to go ahead with off the shelf components. Well, this is the first step

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datalist

Preencher uma datalist de HTML5 dinamicamente com jquery

A versão 5 do HTML trouxe alguns elementos novos, e um deles é  a datalist. Uma datalist é uma lista de dados pré-definidos que são atribuídos a um elemento input.

Uma datalist comporta-se como um controlo select, mas com umas particularidades:

  • Não tem parte de texto – como o select nas opções (options)
  • Permite completação automática das opções da datalist – bastando escrever..

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Binary Clock
Xbee2

Transferir imagens (tiradas com a camera do PI) usando Xbee e as funções serie do Python

Agora que já sabemos como programar os XBees em Python, vamos subir um pouco e em vez de passar caracteres pelos XBee, vamos passar dados, neste caso uma imagem.

Vamos usar a camera do PI para tirar a foto e posteriormente enviar para outro computador.

Cliente para tirar a fotografia e enviar a imagem. Colocar no RPi com a maquina fotografica ativa.
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Xbee3