Building a Siri/iOS HomeKit-Enabled Garage Door Control with Raspberry Pi – Part 2: Software

This post is the second in a series exploring home automation using a Raspberry Pi, each covering a different aspect of the build of a garage door controller: Basic hardware acquisition and installation into a project box Software installation and code for controlling the door Software camera configuration and code streaming video to HomeKit Installing […]

Setting Up a Raspberry Pi without a Monitor or Keyboard

There are a lot of how-to’s online describing ways to set up a Raspberry Pi without a monitor or keyboard, but none of them are simple or straightforward. This will be. I’m going to walk through how to do this on a Mac, but something like this should also work on Windows using internet connection […]

Using the Raspberry Pi as a Simple Current and Power Meter

On a recent project I needed to fairly accurately measure current and power consumption of a handful of parts in real time. We needed to measure current in the range of micro amps, so this was actually somewhat tricky. I could have just used a bunch of super expensive current meters, but I managed to […]

GardenPi: Sensing with the Pi

Phase one GardenPi has been running well for a while now (aside from some wifi connectivity issues). I can legitimately say that my garden waters itself everyday, unless the forecast calls for rain. However, there are definitely improvements to be made. Let’s take a look at how to add analog sensor to the Raspberry Pi […]

GardenPi: Garden Care with Raspberry Pi

Like any good “lazy programmer,” I’m always looking for ways to automate. This spring’s project: monitoring and watering my garden. I had a wifi-enabled Raspberry Pi laying around and decided to put it to good use. For this project I wanted to do better than just a glorified timer. The goal: An automated watering system […]

Talking SPI on Raspberry Pi

The Serial Peripheral Interface (SPI) Bus is used for communication between microcontrollers and other digital devices. On the Raspberry Pi it can be very handy for doing things like acquiring values from an Analog-to-Digital converter, reading a temperature sensor, or communicating with another microcontroller. When using SPI on the Raspberry Pi, there are many options […]

Inexpensive Ethernet JTAG Adapter with Raspberry Pi and OpenOCD

I recently wanted an ethernet JTAG adapter for a project I was working on. Unfortunately ethernet JTAG adapters can cost upwards of $300, and even then they can be specific to particular chipset and toolchains. However, were already using OpenOCD with ST-LINK/V2 programmers to communicate with out hardware, and it turns out that it’s very […]

Optimizing SQLite on Raspberry Pi

If you’ve read some of my prior posts, you’ve probably realized that I enjoy tinkering with the Raspberry Pi. I’ve recently been working on a web application for the Pi that uses a database to store some data. The application didn’t require multiple users or special access features, so I decided to go with the […]

Wireless Communication Between Raspberry Pi and Your Computer

Imagine for a moment that you want to develop a product that uses a Raspberry Pi. Let’s say that this product requires the ability to connect up to a wireless network. Maybe it’s a device that streams music from an online web-service, or maybe it hosts some type of webpage. This functionality should be easy to accomplish […]

Writing C on Raspberry Pi with Test-Driven Development

The Raspberry Pi is a great product. Undeniably, it presents us tinkerers with unlimited possibilites to get our hands dirty writing custom programs and bringing the Pi to life. If you want to write a program to run on the Pi, you have a lot of languages to choose from. Being an embedded developer, I thought […]

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