To facilitate remote tech support, we need a server some place safe, like this one. We also need to give the Raspberry Pi a username and password so it can log in (this article was used as a guide). But why would we want to do this? I am looking to […]
Maker
86 posts
A while ago work bought an Ultimaker 2 to produce cool things at work, A Raspberry Pi B+, and Pi Cam were also acquired for it with a view to using OctoPi (a copy of OctoPrint developed for the R-Pi). OctoPi can be downloaded from the official mirror, and burnt […]
What Do I Need? Raspberry Pi unit with Raspbian installed Ethernet connection to R-Pi USB Wi-Fi Stick In addition to the above items, you will need to check the configuration of the Wi-Fi network you plan to connect to, you will need the SSID, password, and encryption type/method (e.g. the […]
The Raspberry Pi is an awesome little computer that can feed either a composite video feed, or a HDMI output, however most of the time I want the thing headless, If you set up Rasbian the same way as I showed in the last guide then this will work for […]
I have used a number of Raspberry Pi’s for things, and despite there being more than one linux distribution available for the R-Pi I have not tried anything other than the Debian based Raspbian “wheezy”, These instructions are written assuming that you are using a Mac Running Mountain Lion. Raspbian […]
I have a MacBook Pro, and a Windows XP Virtual machine, and use Eagle at work on another windows machine, The work machine and my mac are both sharing a Dropbox folder, (Alex Lang has instructions on how to install Eagle on Windows). (If you use Eagle 7.1.0 you can […]
My test print of the Maritime Research Institute Netherlands (MARIN) No. 37 profile. The Kort nozzle is based on the one from Tomi Salo put on Thingiverse, I didnt make any alterations to the .dxf file, and a few alterations to the .scad file. I have sized the nozzle to […]
The Raspberry Pi A, and Raspberry Pi B both had a composite video out, on an composite video plug (RCA), the new model B+ uses a 4-pole socket which carries both audio and video signals. This style of connector is sometimes referred to as “TRRS”, which stands for “Tip-Ring-Ring-Sleeve”. The […]
I have been looking to build an ROV (underwater Remotely Operated Vehicle) for a while, There will be other blog posts on this in my blog some where. I have been looking over the designs for the OpenROV and have signed up on the forums. there is one guy on […]
As part of my R-Pi K-9 I want to have a web browser interface, (also because I want to build an ROV) I don’t have a beaglebone black. Using a web browser as my interface will allow me to use my recently acquired iPad to control it, I want to […]
Sooner or later you will find something that you want to attach to something else, and if any of those some-things is a camera or a tripod, you will soon meet the challenge of WTF? its almost an M6? what the hell is it? Say hello to the 1/4-20 UNC, a […]
Following on from How electrically noisy are Servo motors – Pt1 where I subjected a Tower Pro MG996R and a Tower Pro Microserver 9g to the ERAD (Emissions Radiated) test. I am now going to do the ECON (Emissions Conducted) test. The ECON test is a scan between 150 kHz […]
At work my day job is as an EMC test Engineer, on of the Tests we do as part of EMC compliance testing is a Radiated Emissions scan between 30 MHz and 1 GHz. There are two sets of emissions limits that are most commonly tested for (others are more […]
Normally when using Eagle Light, you only get to see one sheet, and you can not add additional new sheets to a schematic file. However there is a sneaky trick…
A while ago I bought a DIY Arduino Geiger Counter kit from ebay and a SBT-11A Russian Geiger counter tube. The SB-11A is a very sensitive alpha tube, comparable to the LND 7317 in some ways. It also seems sturdier and is certainly cheaper. The data sheet gives: 44-49 cps/uR/sec, so the CPM to […]
As some of you know I may be a bit of a geek, one of the tools I use is the Teensy, it is very smiler in use and specification to an Arduino while not being a pure clone unlike the Diavolino. My preferred member of the family is the […]
Dave Everett of the K9 Builders Club has created a set of files that allow you to cut the K-9 body from Styrene board, Izzy has built one of his, and her blog also has a number of reference images on it. I am tempted to build a number of the […]
I picked up two L298N Stepper Motor Driver Controller Boards from Hobby Components for my K-9, to go with the two 24 V / 4.5 A Parvalux motors I acquired. The L298N Stepper Motor Driver Controller Board from Hobby Components has the following specification: Uses ST L298N chip, can directly drive […]
For a very long time, I have been planning on making a RC K-9 from the BBCs Doctor Who, recently I aquired a copy of “K9 and Company: A Girl’s Best Friend” K-9 and Company was a proposed television spin-off of the original programme run of Doctor Who (1963–1989). It […]
For my boat automation system I plan to use RJ45 sockets and cat 5 cable for interconnecting the master and the nodes. Some nodes will have their own 12 V supply for larger loads, but ones that are just for switches and other transducers (sensors) will need to have 12 […]
At Wuthering Bytes in Hebden Bridge, in the afternoon Tas and I attended Matt Venn‘s Eagle cad workshop, if we had been there all day we would have made a Shrimp board. But since I have been using eagle a littlebit, and am far from any good with it, we […]
I found the following code extracts for the Arduino (I have a Diavolino) to work with the RS485 shield from here: Code for the transmitter: Code for the receiver: And a guide for the R-Pi shield (from here). Putting the two together (I don’t have two Arduinos and shields) so […]
On Saturday I picked up an Evil Mad Scientists Arduino clone, The Diavolino, from MadLab‘s little shop “Invent-ory” to use with my RS485 stuff. the Diavolino requires assembly yourself (official instructions). The FTDI I bought was this one: RHX PL2303 USB To RS232 They are about £2.29 per. however where Windows […]
Following on from the RS485 on an Raspbery Pi post, I also picked up a LinkSprite RS485 Arduino board from RoboSavvy (Arduino RS485 schematics). I plan on trying to get the two to talk to each other, using a short bit of three cores: A aka ‘-‘ aka TxD-/RxD- aka […]
The Link Sprite RS485 GPIO Sheild for a Raspberry Pi alows you to make use of (abuse) the RS232 port in the R-Pi’s GPIO as an RS 485 Port. There are several good advantages to RS 485 over 232 and some awsome ones. RS485 is capable of both multidrop and […]
I have been working at CASS Industries for a while, one of my co-workers changed the logon music on a computer I use at work to the theme tune for 1980s Austrialian childrens TV show “Skippy The Bush Kangaroo”. He listens to Radio 4 a fair bit, and as a […]