Printable Case For Pinecil And TS100 Soldering Irons (Mis)Uses A 608 Bearing

[PjotrStrog]’s rugged Pinecil / TS100 storage case is the perfect printable accessory to go with a hacker’s choice of either the Pine64 Pinecil, or the Miniware TS100 soldering irons. There are some thoughtful features beyond just storing the iron, too!

A standard 608 bearing makes for a handy heat-resistant stand.

Some of you may have spotted a 608 bearing in the image above, and might be wondering what it is for. In proud hacker tradition of using things for something other than their intended purpose, the bearing makes a heat-resistant stand to hold the iron while in use.

This design has a pretty deep history that illustrates the value of sharing one’s designs and allowing others to remix and refine ideas. [PjotrStrog]’s work makes use of the earlier and highly thoughtful TS100, Pinecil, TS80 & TS80p cases with options by [Termiman], which themselves are based on bearing-equipped TS100 case by [Olvin] that we covered back in 2020.

We loved the Pine64 Pinecil soldering iron, and this looks like a fantastic printable storage and carry option. There are a few pieces of hardware needed to put the rugged version together, but [PjotrStrog] also offers a less rugged design with fewer hardware needs, so check that out as well.

Excuse Me, Your Tie Is Unzipped

If you ask your typical handyperson what’s the one thing you need to fix most things, the answer might very well be duct tape. But second place — and first place in some circles — would have to be zip ties. These little wonders are everywhere if you look for them. But they are a relatively recent invention and haven’t always had the form they have today.

The original zip tie wasn’t called a zip tie or even a cable tie. In 1958 they were called Ty-Raps and produced by a company called Thomas and Betts. Originally meant to improve aircraft wiring harnesses, they found their way into various electronic equipment and packaging uses. But they’ve also become helpful in very unusual places too. A policeman trying to round up rioters would have problems carrying more than a few conventional handcuffs. But flexible cuffs based on zip ties are lightweight and easy to carry. Colon surgeons sometimes use a modified form of zip tie during procedures.

History

Maurus Logan worked for the Thomas and Betts company. In 1956, he was touring an aircraft manufacturing plant. Observing a wiring harness being put together on a nail board, similar to how car harnesses are made, he noted that the cables were bundled with waxed twine or nylon cord. A technician had to tie knots in the cord, sometimes cutting their fingers and often developing calluses. In addition, the twine was prone to fungal growth, requiring special treatment.

Logan kept turning the problem over in his mind and tried various approaches. By 1958, he had a patent for the Ty-Rap. The tie was lightweight, easy to install, easy to remove, and inexpensive.

Continue reading “Excuse Me, Your Tie Is Unzipped”

A Homebrew SMD Vise Built From Scrap Wood

We don’t see too many wooden projects around these parts, but when [olikraus] turned a few pieces of scrap lumber into a functional SMD vise, how could we not take notice? The idea is simple. Two pieces of wood with slots in them hold the PCB. Two other pieces form an arm with an adjustable needle that can hold down tiny parts while you solder. Magnets hold each piece to a metal working surface. Simple and elegant.

We might have 3D printed some of the pieces, but then again, you have to be careful where your soldering iron goes if you go that route. The other advantage to using wood is that you can easily grab a few pieces of scrap and have a different-sized vice in just a few minutes.

There are a few improvements we might suggest. For example, a thumbscrew to fix the needle would be welcome. It seems like you could make the part that holds the needle smaller, too, to help you get your soldering iron into the same area. But it looks workable with no changes at all.

Working with scrap wood isn’t glamorous, but it does make for quick and easy functional builds. A number of the holes and bolts here could even be replaced with glue if you don’t mind the time for it to set.

Of course, you could mix and match this with other designs. We like the “dollar store PCB holder,” but it would work well with the arm from this project. We couldn’t help but think of the SMD beak when we saw this project.

Near Field EMI Probes: Any Good?

[Learnelectronics] purchased some near-field EMI probes for his tiny spectrum analyzer for about $5 on sale. Could they be any good at that price? Watch the video below and find out.

The probes arrived as a kit with four probes: three circular ones for sensing the H field and a stubby probe for sensing E fields (although the video gets this backward, by the way). There’s not much to them, but for the price, it probably isn’t worth making them yourself if your concern is the cost. Now, if you just want to make your own, we get that, too, but don’t expect to save much money.

Continue reading “Near Field EMI Probes: Any Good?”

3D render of the badge programming adapter PCB

Supercon 2022 Badge Gets A Tinkering Helper Add-on

Are you one of the lucky ones to own a Hackaday Supercon 2022 badge? Would you like to make it even easier to program than it already is? [brokebit] has exactly the project you might’ve been dreaming of all along — it’s a Supercon 2022 Badge programming adapter. With pass-through for all badge pins, four buttons, a total of ten DIP switches and four LEDs, the sheer IO of this add-on makes good use of the badge’s expansion header. But that’s not all, as there’s a USB-UART converter accessible through a MicroUSB socket.

Using mostly through-hole components, this board won’t leave you digging through parts drawers for exotic buttons or pin headers; most everything is jellybean. The pass-through capability of the adapter means that other badge add-ons will be compatible and you can even use this adapter to debug them, with DIP switches helping you disconnect whatever onboard circuitry interferes. For instance, if you’re not looking for USB-UART functionality provided by the classic CP2102, the dual DIP switches are right there for you to disconnect it on the fly.

The board is 6 layers, but since the quoted price was the same as a 4-layer board, it made for a more comfortable layout. Want a refresher on the badge? Here you go, and here’s our write-up about it before Supercon. Hackers have been stretching the limits of what the 2022 badge can get done — here’s a punch card reader, for instance.

LEDCard: The Pocketable Ring Light

How many times have you found yourself fumbling about with lighting while trying to get a clear up-close shot of an object? Although smartphones come with pretty nice cameras these days, properly lighting an object and taking impressive macro shots isn’t exactly their strong suit. This is where [MisterHW]’s LEDCard is a very welcome companion. Not only does it provide a credit card sized ring light, it also allows for a molded acrylic lens to be inserted for high-quality macro shots.

The project in its current iteration consists out of a single PCB with rechargeable Li-ion coin cells (LIR2430) and a USB-powered charge controller. After charging the LEDCard (or inserting freshly charged Li-ion coin cells), a single button press will light up the SMD LEDs via the LM3410 LED driver IC. Press the ON button gently (half-press) for medium brightness and fully for full intensity. Finally, pressing the TEST button with the LEDs lit performs a battery level test that turns the LEDs off if the battery is ok. If they stay lit, it’s time to recharge the LEDCard.

As [MisterHW] points out, the LEDCard being compact enough to carry around with you wherever you go makes it suitable as an emergency flashlight as well. It’s also not the final iteration of the design. Future (incremental) improvements include a diffuser for the ring light and more. Even so, in its current state LEDCard is already a proven design.

A closeup picture showing the jagged edge of the cut

Debugging Laser Cut Wobble, The Scientific Way

[PWalsh] was using his lasercutter to cut acrylic, expecting the cuts to have a pleasantly smooth edge. Alas, the edges turned out to be wobbly and sandpaper-like, not smooth in the slightnest. Bummer! Internet suggested a stepper motor swap, but not much in the way of insights – and that would’ve been a royal pain for sure. How would you approach debugging such a problem? Well, [PWalsh] didn’t want to swap crucial components willy-nilly, going the scientific way instead, and breaks it down for us.

Having compiled an extensive list of possible places to look for a fault in, he started going through fundamental assumptions. Do other lasercutters experience this issue? No, even the cheap ones can cut things properly. Is it water level causing intermittent cooling? Nope, not that. Is it the stepping settings? Tweaked, not that. Laser pulsing frequency? No dice. Continue reading “Debugging Laser Cut Wobble, The Scientific Way”