Archive for category: Raspberry Pi

A New Development Board: the ODROID-C1

March 14, 2015 | Development Boards, Raspberry Pi, Small Linux Computers | By: Mark VandeWettering

One of my recent posts highlighted the big pile of development boards that I have lying around. This week, I actually added to that pile in a couple of ways: I found a pair of Beagle Bone Blacks that I had misplaced, a couple of Propeller boards, and most significantly, I ordered an ODROID-C1 from […]

A Big Bin Full O’ Development Boards at BrainWagon Labs…

March 1, 2015 | Arduino, Atmel AVR, Hardware, My Projects, Raspberry Pi | By: Mark VandeWettering

I have an odd obsession with small, relatively cheap hardware development boards. Over the last few years, I’ve acquired a bunch of them, from Arduino to Raspberry Pi to BeagleBone Black. I thought it might be nice to just do a short video showing what I have around. So I did. Here’s a little 25 […]

Another bit of programmable hardware: the WRTnode

January 2, 2015 | Computer Science, Hardware, Internet of Things, My Projects, Operating Systems, Raspberry Pi | By: Mark VandeWettering

I’ve got a weak spot for cheap, programmable hardware. In my junk drawer I’ve got a collection of Arduinos, Parallax Propellor boards, a couple of STM32 based ARM boards, and several Beagle Bone Blacks and Raspberry Pis. Today, another entry arrived: the WRTnode. I’ve only had it out of the box for a few hours, […]

Schrödinger’s Cat

September 10, 2014 | Raspberry Pi | By: Mark VandeWettering

I’ve long suspected that my cat Scrappy had teleportation powers: Okay, okay, I know he doesn’t really. But it was kind of funny.

RTL-SDR on Raspberry Pi…

July 28, 2014 | Raspberry Pi, Software Defined Radio | By: Mark VandeWettering

Just a quick note. I have been meaning to try out the combination of the Raspberry Pi with one of the popular $20 RTL-SDR dongles, to see if the combination would work. I was wondering how well it would work, how hard it would be, how much of the available (small) CPU power it would […]

Some continuing short bits on SSTV….

March 16, 2014 | Amateur Radio, Raspberry Pi, SSTV | By: Mark VandeWettering

Nothing too exciting going on, but minor bits of code and play have been done, so I thought I’d update. First of all, there is a program for decoding SSTV on the Pi, called QSSTV. I don’t have a proper sound setup on the Pi yet, so I couldn’t test it live on the air, […]

Additional Experiments with SSTV, with some ideas….

March 9, 2014 | Amateur Radio, Raspberry Pi, SSTV | By: Mark VandeWettering

Previously, I had written an encoder for the Robot 36 SSTV mode. I chose this for a simple reason: it appears to be the most common mode used in downlinks from satellites, such as the ARISSat-1. It’s not a bad choice, and presents reasonable quality in just 36 seconds. Today, I decided that I should […]

SSTV travels through the Ether! A minor success!

March 8, 2014 | Amateur Radio, Raspberry Pi, SSTV | By: Mark VandeWettering

So, this morning I played around a bit more with my Raspberry Pi code to try to see if I could make an SSTV beacon. The idea was to use two existing bits of code, raspistill and my own SSTV encoder (robot36), and glue them together with a small bit of Python. The code uses […]

Some thoughts on SSTV and the Raspberry Pi…

March 6, 2014 | Amateur Radio, Raspberry Pi | By: Mark VandeWettering

Today I found an interesting Instructable on running SSTV on the Raspberry Pi. It uses an interesting bit of software which uses the Pi to directly generate an FM signal. Strictly speaking, I doubt this is a great idea without some outboard harmonic filtering, but it’s cool that it could be done. I recalled that […]

Raspberry Pi Camera NoIR…

February 10, 2014 | Raspberry Pi | By: Mark VandeWettering

I’ve been playing around with the Raspberry Pi Camera for a number of different purposes, but one thing is pretty apparent right off: while the quality overall is quite good, it’s not very good in low light. Because at least part of my potential application is watching the night-time activities of wildlife (most likely my […]

Streaming Video From the Raspberry Pi Camera…

February 6, 2014 | Raspberry Pi | By: Mark VandeWettering

First of all, let me get this off my chest: video over the web is a hideous Tower of Babel. With that basic complaint, let me start by saying that this project started with a Raspberry Pi and the Raspberry Pi Camera. Previously, I had used the Pi with a USB webcam and had connected […]

An $8.88 WiFi adapter for my Raspberry Pi…

February 2, 2014 | Raspberry Pi | By: Mark VandeWettering

I was out running errands the other day, and found myself at Fry’s Electronics. I needed to pick up a VGA extension cable to replace one that had inexplicably become bad, and as I often do while wandering around, found myself doing a bit of window shopping. (Not Windows shopping, I’ve had enough of that.) […]

Arduino Bumper Shell, created with OpenSCAD

March 2, 2013 | Arduino, My Projects, Raspberry Pi | By: Mark VandeWettering

Last week, I got a chance to experiment with a Replicator 2, and printed some brackets for my robot project. I designed them using OpenSCAD, which is kind of a scripting language for solid shapes. It can export in STL format, which I then used MakerWare to drive the Replicator 2. The picture at the […]

Using the Raspberry Pi as a wireless webcam server…

February 7, 2013 | My Projects, Raspberry Pi | By: Mark VandeWettering

The other day, I was walking around in Fry’s Electronics, and noticed that they had HP HD-2200 webcams on sale for a mere $6. I thought to myself: hey, even if the camera is crappy (and it is) that is simply too cheap to pass up, and grabbed one. Last night, I decided to try […]

The Raspberry Pi, and the WiPi USB dongle, with questions about power…

February 6, 2013 | My Projects, Raspberry Pi, Robotics | By: Mark VandeWettering

I’m having lots of fun with my Raspberry Pi, and I’ve decided to launch one of my crazy spare-time projects: inspired by this article detailing the construction of RUDEBOT, a kind of mobile tablet robot, I decided to build a robot of my own. But, anything worth doing is worth changing and adapting, so I […]