What do you do if you have a pair of input device peripherals for your computer, but they are from different manufacturers and thus not available as a single unit? If you are [Marco van Nieuwenhoven], you combine the two to make a mashup single peripheral.
[Marco]’s two peripherals were a 3Dconnexion SpaceMouse Wireless, and a Microsoft Sculpt Keyboard. His mashup isn’t featured here because it simply is a mashup, after all anyone with a hot glue gun could combine the two, instead he’s created a single peripheral that almost looks as though it could have been manufactured that way. It’s not complexity we’re looking at here, but elegance!
The Sculpt keyboard fortunately has a large palm rest in which the electronics and batteries sit, and he’s carefully measured the footprint of the top half of the SpaceMouse before hand cutting a very neat aperture to take it. The SpaceMouse PCB is attached below the aperture, and the bottom of the palm rest is attached with a little bit of padding to ensure a snug fit. The result: a combined input device to be proud of!
Of course, if this keyboard isn’t special enough for you, how about a typewriter?
If you are a regular at creating printed circuit boards, it is likely that somewhere in your shop there will be a discard pile of boards on which you placed a component in the wrong orientation such that it would not work. It’s easily done, and don’t be shy to admit it if it’s happened to you.
[Bill] was making his own ARM developer board, taking inspiration from the ARM Pro Mini. He produced his PCB design and sent it off to the board house, and in due course received and reflow soldered a batch of beautiful dev boards. On power-up though, something was wrong! No USB device detected on his computer, a disaster. A lot of studying board and schematic led to the discovery that his push-button switches had been placed at 90 degrees to the orientation it should have had, leaving them in a permanently “on” position.
The PCB bug makes this is a Fail Of The Week post, but he transformed into a win with some experimentation with the switch outline in KiCAD before finding a way to mount the switches on the pads at 45 degrees, covering three of the pads. Well done, and well done for admitting the error.
[Editor’s note: been there, done that. One way to prevent the error is to only connect to diagonally opposite pins of the tact switch, so the rotation doesn’t matter.]
Having earlier asked others to come clean with their PCB mistakes, it’s probably appropriate to admit that Hackaday scribes are just as fallible as [Bill] when it comes to PCB layouts. Somewhere there may still be a board on this bench with a QFN microcontroller bodged on at 90 degrees to its original orientation, with cut tracks and tiny wire runs.
Whether you are a seasoned PCB pro or a wet-behind-the-ears rookie, our Creating a PCB In Everything series should be of interest.
When the hackspace where this is being written created their textile room, a member who had previously been known only for her other work unexpectedly revealed herself to be a weaver, and offered the loan of a table-top loom. When set up, it provided an introduction to the art of weaving for the members of all different interests and backgrounds, and many of them have been found laying down a few lines of weft. It’s a simple yet compelling piece of making which captivates even people who might never have considered themselves interested in textiles.
If you are not lucky enough to have a friendly hackspace member with a spare loom when you wish to try your hand at weaving, you may be interested in this Thingiverse project, a 3D printable rigid heddle loom. It’s not the most complex of looms, the heddle is the part that lifts the warp threads up and down, and it being the rigid variety means that this loom can’t do some of the really fancy tricks you’ll see on other types of loom. But it’s a functional loom that will allow you to try your hand at weaving for the expenditure of not a lot of money, some 3D printer filament, and some PVC pipe. If your hackspace or bench has an area devoted to textiles, it may find a place.
We’ve shown you a few looms on these pages over the years, but mostly of the more mechanised variety. A Raspberry Pi automated loom for example, or a CNC Jacquard loom.
Thanks to our Shenzhen contributor-at-large, [Naomi Wu] for the tip.
Temperature-controlled soldering irons can be cheap, lightweight, and good. Pick any two of those attributes when you choose an iron, because you’ll never have all three. You might believe that this adage represents a cast-iron rule, no iron could possibly combine all three to make a lightweight high-performance tool that won’t break the bank! And until fairly recently you’d have had a point, but perhaps there is now a contender that could achieve that impossible feat.
The Miniware TS100 is a relatively inexpensive temperature-controlled soldering iron from China that has made a stealthy entry to the market, and which some online commentators claim to be the equal of far more expensive professional-grade irons. We parted with just below £50 (around $60) to place an order for a TS100, and waited for it to arrive so we could see what all the fuss was about. Continue reading “Review: TS100 Soldering Iron”
The British government has shown a surprisingly light touch towards drone fliers in the face of the strident media demands for them to be banned following a series of reports of near-misses with other aircraft. That is about to change with reports of the announcement of a registration scheme for craft weighing over 250 g (about 9 oz). Details are still a bit sketchy, but it is reported that there will be a written test and an element of geofencing around sensitive locations.
Our friendly professional multirotor flier’s reaction is that the existing laws are clear enough, and that this is likely to be no deterrent to any people who already use their drones illegally. It seems that the UK government is following the lead set by the USA in this matter, with the 250 g limit on that side of the Atlantic having already spawned an industry of smaller craft. Time will tell on whether the measures will be effective, we suspect that their success will depend on their not being overly stringent.
[Editor’s note: Following a lawsuit, the US FAA registration requirement was struck down for hobbyists because model aircraft are explicitly excluded from the FAA’s purview. The Brits are not likely to be so lucky.]
If there is a positive side to this announcement, it might be that the 250 g class of multirotor will inevitably become the focus of a lot of attention as manufacturers and engineers work to pack the most performance into the small platform. This small silver lining to the drone registration cloud might not be much, but we’ll take it.
We’ve covered the UK drone story as reported in the media in detail in the past.
Palace of Westminster image: Diliff [CC BY-SA 2.5].
So you spent your youth learning your craft in front of an Amiga 500+, but a quarter century later all you have left is a broken computer and a pile of floppies you can’t read any more. What’s to be done? This was the position [Rob Smith] found himself in, and since some of the commercial solutions to ripping Amiga floppies were rather expensive, he decided to have a go at making his own.
His write-up makes for a fascinating read, as he delves into the physical interface of the PC floppy drive he used, and into the timing required from the Arduino that controlled it. He faced some challenges in getting his code to be fast enough for the task, and goes into some of the optimisation techniques he employed. His code for both Arduino and Windows is open-source, and can be downloaded from his GitHub repository. Future plans involve supporting the FDI disc format as well as ADF, and adding the ability to write discs.
We’ve shown you a lot of Amigas over the years, but perhaps of most relevance here in our archive are this Raspberry Pi floppy emulator and this floppy autoloader for archiving a disc collection.
Via Hacker News.
Our feed is full of stories about the RF noise floor today, and with good reason. The ARRL reports on the International Amateur Radio Union Region 1 president, [Don Beattie, G3BJ] warning that in densely populated parts of Europe there is a danger that parts of the RF spectrum have become so swamped with noise as to be rendered unusable, while on the other side of the Atlantic we have RadioWorld reporting on similar problems facing AM broadcasting in the USA.
At issue are the usual suspects, interference from poorly shielded or suppressed domestic electronic devices, VDSL broadband, power-over-Ethernet, solar and wind power systems, and a host of other RF-spewing electronics. The combined emissions from all these sources have raised the noise level at some frequencies to the point at which it conceals all but the strongest signals. Any radio amateur will tell you that a station in a rural location will be electrically much quieter than one in a city, it seems that this effect has now reached a crescendo.
In the RadioWorld article, the author [Tom F. King] and his collaborator [Jack Sellmeyer] detail a series of tests they performed on a selection of lighting products from a quality brand, bought at a local Home Depot store. They were gathering data for a submission to the FCC enquiry on the noise floor issue we reported on last year. What they found was unsurprising, significant emissions from all the products they tested. They make some stiff recommendations to the FCC and other bodies concerned with radio spectrum to get tough with offending devices, to stay on top of future developments, and for operators of AM stations to pursue sources of interference.
It could be that there is so much equipment contributing to the noise floor that this battle is lost, but it doesn’t have to be this way. Anyone who has had to prepare a product to pass a properly carried out EMC test will tell you that the requirements are stringent, and it is thus obvious that many manufacturers are shipping products unworthy of the certification they display. It is to be hoped that the authorities will begin to take it seriously before it becomes an order of magnitude worse.
Compliance label image, Moppet65535 [CC BY-SA 3.0].