Author Archives: Moritz Walter

New 3D Printer M3D Pro Hits Kickstarter

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M3D just launched their second 3D printer on Kickstarter. The M3D Pro offers more professional features than its predecessor, the M3D Micro, which is still one of cheapest 3D printers around. Despite the higher price of $499, the campaign reached its $100,000 funding goal within hours.

The M3D Pro lures advanced users with a heated print bed from tempered glass, a larger build volume of 191 x 178 x 178 mm (7.5 x 7 x 7 inches) and a full-metal hotend that stands up to 270 °C. With 80 mm/s printing speed and 150 mm/s for travel moves, the Pro …read more

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Filling The Automation Gap In Garment Manufacturing

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Even in this age of wearable technology, the actual fabric in our t-shirts and clothes may still be the most high-tech product we wear. From the genetically engineered cotton seed, though an autonomous machine world, this product is manufactured in one of the world’s largest automation bubbles. Self-driving cotton pickers harvest and preprocess the cotton. More machines blend the raw material, comb it, twist and spin it into yarn, and finally, a weaving machine outputs sheets of spotless cotton jersey. The degree of automation could not be higher. Except for the laboratories, where seeds, cotton fibers, and yarns are tested …read more

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Blob Grid Array Technique Mounts Board-To-Board

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[Howard Matthews] mills his own PCBs, and man, does he hate drilling through-holes. Manually changing the bits between engraving and drilling after isolation routing? What is this? The stone age? [Howard] decided to rethink his DIY PCB manufacturing process, and came to one essential conclusion: Only a fraction of these drills are actually necessary.

Many of our cheap and beloved components, such as the NRF24L01+ and ESP-01 wireless modules come with unnecessarily bulky pin headers. To get away without drilling, [Howard] figured, that all he needs to do is leave out the pin headers and mount these modules board-to-board, using …read more

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Beer Gun Shoots Non-Lethal Doses Of Beverages

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[Michalis Mavros] likes building things from steel. Guns are from steel. He and his friends also like action movies and beer. To address everybody’s needs [MakeItExtreme] style, he built a gigantic beer gun. At the size and caliber of a small field artillery cannon, the spectacular piece of art dispenses chilled pop cans for unsuspecting movie night visitors.

Inside of the 100 x 70 x 25 cm (39 x 28 x 10 inch) assembly crafted from welded steel and wood, [Michaelis] installed a motor scavenged from an automatic window opener. The motor actuates a slider on a linear track above …read more

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Chewbacca Mask Hack Cheers Up The Whining Wookie

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Once tried, even grown-ups just can’t let go of that hilariously funny Chewbacca mask. Also, the speaking toy literally cries out to be hacked. Weary of the whining Wookie, [John Park] set out to bring variety into Chewie’s mode of expression, expanding the mask’s memory and vocabulary to unprecedented levels.

For his hack, [John] keeps the original jaw limit switches and speaker of the mask in place, but replaces the sound generating electronics with an Adafruit Audio FX Mini Sound Board. This sweet piece from [Ada’s] bag of tricks plays back samples from an onboard 16 MB flash memory …read more

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Ask Hackaday: What Are Magnetic Gears (Good For)?

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Magnetic gears are surprisingly unknown and used only in a few niche applications. Yet, their popularity is on the rise, and they are one of the slickest solutions for transmitting mechanical energy, converting rotational torque and RPM. Sooner or later, you’re bound to stumble upon them somewhere, so let’s check them out to see what they are and what they are good for.

What Are Magnetic Gears?

Where conventional gears use mating surfaces of mechanical interlocking teeth, magnetic gears employ alternating magnetic fields to transmit torque. For a long time, magnetic gears have only played a minor role in engineering. …read more

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DIY Smartwatch Based On ESP8266 Needs Classification

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Building your own smartwatch is a fun challenge for the DIY hobbyist. You need to downsize your electronics, work with SMD components, etch your own PCBs and eventually squeeze it all into a cool enclosure. [Igor] has built his own ESP8266-based smartwatch, and even though he calls it a wrist display – we think the result totally sells as a smartwatch.

His design is based on a PCB for a wireless display notifier he designed earlier this year. The design uses the ESP-12E module and features an OLED display, LEDs, tactile switches and an FT232R USB/UART interface. Our beloved TP4056  …read more

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DIY Smartwatch Based On ESP8266 Needs Classification

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Building your own smartwatch is a fun challenge for the DIY hobbyist. You need to downsize your electronics, work with SMD components, etch your own PCBs and eventually squeeze it all into a cool enclosure. [Igor] has built his own ESP8266-based smartwatch, and even though he calls it a wrist display – we think the result totally sells as a smartwatch.

His design is based on a PCB for a wireless display notifier he designed earlier this year. The design uses the ESP-12E module and features an OLED display, LEDs, tactile switches and an FT232R USB/UART interface. Our beloved TP4056  …read more

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Wiggling Pokéball Detects Rare Pokémon

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[TJ Hunter] wanted to find some of the rarer Pokémon without draining his smartphone battery while staring on a screen. The handy ø 25 cm Pokéball he built to make the endless marches more tolerable detects nearby Pokémon and wiggles to alert its owner if there’s a rare catch in sight.

On the inside of the authentic looking, red-white painted styrofoam sphere sits a Particle Electron and a Particle Asset Tracker board, which give it the necessary GPS and 2G/3G connectivity. An RC servo with a little weight takes care of the shaking motion. Every minute, the ball sends its …read more

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Electroloom Throws In The Towel

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The once successful Kickstarter and National Science Foundation (NSF) research grant winner Electroloom is saying “Thanks and Farewell” to its backers, supporters, and sponsors. The startup ran out of funding while developing printer-like machine that uses electrospinning to automatedly produce ready-to-use garments.

Electroloom has been an ambitious project to explore if electrospinning could be made viable for garment manufacturing. The process that uses a high voltage to transform a resinous liquid into non-woven fabric was originally invented for textile fabrication, although its low throughput has always been a limiting factor. The method was mostly used in laboratory and medical applications. …read more

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