Making Tea Pots With Antique Machinery

We in the West take quite a lot for granted. We’re used to certain standards of care in our homes and our places of work, so much so that we rarely even take time to notice it. Workplace accidents are a big deal, and failing to report can lead to you finding yourself being shown the door. So it’s a little sobering to see how things get made in countries with a less stringent approach in certain areas of basic health and safety.

With the urge to drive prices to the lowest possible, low-tech items such as clothing and housewares tend not to be made in highly sophisticated, automated factories, but more likely in smaller facilities employing more labour, which favours countries where such labour is cheaper and more available. The video we’re highlighting here shows a small factory in what is likely Pakistan (but equally could be a few other places, we’re only guessing) which would seem fairly typical for the level of sophistication required to make enameled teapots.

The video shows the production process, starting from sheet steel cut by hand with shears, which is trued before being stamped into a shallow dish. These first two machines are driven by exposed belts, which is particularly risky, given the style of free-flowing fabric clothes several of the workers wear. In the background you can see electrical wiring just slung around, hanging off nails. The whole building is the same, improvised machines with no protective features, managed by skilled manual workers dedicated to their allocated task, all working in perfect unison. It’s lovely to watch, but also saddening at the same time, as you know those guys are right in the middle of a thousand potential hazards, and only their skill and dexterity is stopping something bad happening. The machines themselves are heavily worn all over the place, but clearly hacked by someone there knows enough to just keep them ticking over. Just checkout the deep wear in the tool rest at [4:20] in the video!

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Rescuing A Wacom Digitizer From A Broken Lenovo Yoga Book

The Lenovo Yoga Book is a interesting thing, featuring a touch-surface keyboard that also doubles as a Wacom tablet. [TinLethax] sadly broke the glass of this keyboard when trying to replace a battery in their Yoga Book, but realised the Wacom digitizer was still intact. Thus began a project to salvage this part and repurpose it for the future.

The first step was to reverse engineer the hardware; as it turns out, the digitizer pad connects to a special Wacom W9013 chip which holds the company’s secret sauce (secret smoke?). As the GitHub page for [TinLethax]’s WacomRipoff driver explains, however, the chip communicates over I2C. Thus, it was a simple enough job to hook up a microcontroller, in this case an STM32 part, and then spit out USB HID data to a host.

It hasn’t all been smooth sailing, and it’s not 100% feature complete, but [TinLethax] was able to get the digitizer working as a USB HID input device. It appears the buttons and pressure sensitivity are functional, too.

If you’ve got a disused or defunct Yoga Book lying around, you might just consider the same mods yourself. We’ve seen some other great hacks in this space, too. Video after the break.

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An Entirely Frivolous Way To Measure Data

[lexie] is a librarian, and librarians live in the real world. They’re not concerned with vague digital notions about the size of data, but practical notions of space. Thus, she created a tool to answer an important question: how long do your shelves need to be if you’re storing all your information on 3.5″ floppy disks?

It’s a great question, and one we find ourselves asking, well, pretty much never. [lexie]’s tool is also built using modern web technologies, and 3.5″ floppy disks were never really used for bulk storage, either. It just makes the whole thing all the more frivolous, and that makes it more fun.

You can key in any quantity from megabytes to exabytes and the tool will spit out the relevant answer in anything from millimeters to miles as appropriate. Despite the graphics on the web page, it does assume rational shelving practices of placing disks along the shelves on their thinner 4 mm edge.

We’d love to see a expanded version that covers other storage methods, like tape, hard drives, or burnt media. It could actually become pretty useful for those building their own mass storage farms at home. With CHIA cryptocurrency that could become more popular, even if it does run us all out of hard drives along the way. Altnernatively, you might consider hooking up a floppy controller for your Raspberry Pi.

 

Building A Custom Linux Single Board Computer Just To Play Spotify

If you want to hook up an existing stereo or amplifier to Spotify, there’s a fair few options on the market. You can even just order a Raspberry Pi and be done with it. [Evan Hailey] went his own way, however, and built his own Spotify Box from scratch.

[Evan] even made this tidy wooden enclosure, learning yet more along the way!
Housed inside a tidy little wooden enclosure of his own creation, the Spotify Box can turn any amplifier into a remote-controlled Spotify player via Spotify Connect. Pick the songs on your smartphone, and they’ll play from the Spotify Box as simple as that.

The project is based on the Allwinner V3S, a system-on-chip with a 1.2GHz ARM-Cortex-A7 core, 64MB of DDR2 RAM, and an Ethernet transceiver for good measure. There’s also a high-quality audio codec built in, making it perfect for this application. It’s thrown onto a four-layer PCB of [Evan’s] own design, and paired with a Wi-Fi and BlueTooth transceiver, RJ-45 and RCA jacks, a push-button and some LEDs. There’s also an SD card for storage.

With a custom Linux install brewed up using Buildroot, [Evan] was able to get a barebones system running Spotifyd while communicating with the network. With that done, it was as simple as hooking up the Spotify Box to an amp and grooving out to some tunes.

Along the way, [Evan] learned all about compiling drivers and working with embedded Linux, as well as how to take a bare SoC and build it into a fully-functional single-board computer. When someone else says they “made” a Spotify player, he presumably gets to clear his throat.

If you fancy retro computers, consider interfacing Spotify with your classic Mac instead!

[Thanks to Jay Carlson for the tip!]

A man watching money being shredded in a picture frame

Banksy-Like Stock Tracker Shreds Your Money When The Market’s Down

For anyone playing the stock market, and perhaps even more so for those investing in cryptocurrencies, watching the value of your portfolio go up and down can be a stressful experience. If you’d like to have a real-time display of your investments that adds even more stress, [Luis Marx] has got you covered. His latest project is a plexiglass case (video in German) that fills up with banknotes when your portfolio is up, and shreds those same notes when it’s down.

Inspired by an infamous Banksy artwork, [Luis] began by building a wood-and-plexiglass display case suitable for hanging on the wall in his office. He then installed a small paper shredder, modified with a servo so that it could be operated by an Arduino. Unable to find an off-the-shelf banknote dispenser, he designed and 3D-printed one, consisting of a spring-loaded tray and a motor-driven wheel.

A plastic box that dispenses a banknote

The project also includes a Raspberry Pi, programmed to fetch market data from online sources and calculate the net profit or loss of [Luis]’s portfolio. The resulting system is a rather disturbing visualization of the ups and downs of the market: having to sweep strips of green paper off your floor adds insult to the pain of losing money.

If you want a less painful way to keep track of your investments, try this Rocketship. For those interested in  traditional stock tickers, this ESP32 based one might be more to your liking.

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Lego Submarine Gets Balloon Ballast System

Lego is a fun building block which vast numbers of the world’s children play with every day. However, the mechanical Technic line of Lego building blocks has long offered greater options to the budding engineer. [Brick Experiment Channel] is one such soul, working hard on their latest Lego submarine.

The sub is built inside of a glass food container, chosen for its removable plastic lid with a watertight seal. This keeps all the mechanics dry, as well as the custom electronics built to allow a 27MHz RC controller to send signals to the Lego electronics. This is key as higher frequency radios such as Bluetooth or WiFi can’t penetrate water nearly as well.

A magnetic coupling fitted to a Lego motor is used to drive the propeller in the water without the leaks common when trying to seal a rotating shaft. A second coupling on a Lego servo along with a creative steering arrangement allows the propeller to be turned to steer the craft.

The ballast system is simple. A balloon is filled by a Lego motor running an air pump, capable of 3.0 mL a second and capable of creating a maximum pressure of 2.0 bar. When the balloon is inflated, the buoyancy goes up and the sub rises. Run the motor the other way and the balloon is emptied by a clever clutch and valve arrangement, reducing buoyancy and causing the sub to sink.

The sub isn’t perfect. Maintaining a set depth underwater can be difficult with the rudimentary ballast system, perhaps as the balloon changes shape with varying water pressure. Sometimes, Lego axles slip out of their gears, too, and the radio only works for a few meters under water.

However, simply building a Lego sub of any sort is a remarkable feat. It’s interesting to see the variances in the design compared to earlier projects from [Brick Experiment Channel], too, as we’ve featured their earlier subs before. Video after the break.

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Banish Early Morning Zombification With The Zom-b-gone!

[Applied Procrastination] aka [Simen E. Sørensen] has a simple project to help those of us that struggle with early-morning zombification. By leveraging the backlight optics from a broken LCD monitor, it is possible to create an excellent diffused light source to simulate daylight, before your chosen waking time. The theory is that it is less shocking to the brain to be woken more gradually than an alarm may do. The increasing light level is to prepare the brain with a slowly increasing light level, reminiscent of daybreak, before being properly awoken by an alarm, regardless of the actual light level outdoors. This particularly useful for those of us in more northern regions, such as [Simen]’s native Norway, where mornings are very dark in the winter months.

Daylight is not purely a diffuse source however, it depends on the degree of atmospheric scattering, local reflections and such, but as far as we’re concerned here, we can just aim for as diffuse a light source a possible.

Source: DOI:10.1117/12.797854

The implementation makes use of the existing LCD metal frame, the light guide panel (usually a big hunk of acrylic covered in etched markings on one side) the diffuser/brightener sheet, and the prism sheet. A white LED strip mounted around the frame edge directs light into the light guide, which with a combination of total internal reflection and scattering on one side only, effectively turns the light through 90 degrees, and spreads it out evenly across that surface. The result of this optical sandwich is flat, even light, exactly what you want for a display, and also for simulating daylight.

Nestled beneath the expected 3D printed frame, is a custom PCB derived by smooshing together the designs from the Adafruit DS3231 RTC module and the Arduino Nano, an additional push button and rotary encoder complete the minimalistic UI, and allow the device to double up as general purpose lamp during the day. Despite a few wobbles with assembling the frame, and some incorrect PCB footprinting, the whole thing came together pretty nicely. This is a perfect thing to do with broken LCD monitors, eeking out a new life and keeping the amount of landfill to a minimum.

For further details of the hardware and codes, see the Zom-b-Gone Github.

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