Engineering
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Using Over 130 3D-Printed Parts, This Six-Digit Calculator Lets Gears and a Hand Crank Handle the Logic A maker has built a calculator out of some 3D-Printed parts that can perform up to six-digit addition, subtraction, multiplication, and division that too without any complicated electronics. The machine is made from more than 130 custom designed parts and works entirely through gears, pins, levers, springs, and a hand crank. Its design is inspired by historic mechanical calculators, especially… |
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This Ordinary Looking Suitcase Unfolds Into a Fully Functional DIY Car That Hits 33 km/h on the Road In 1991, Mazda built one of the strangest vehicles ever made, a car that could fold into a suitcase. Only three promotional prototypes were created, and just one is believed to have survived. Instead of trying to find the original, a maker from the YouTube channel Bucket decided to build a working replica from scratch. The original Mazda Suitcase Car used a square tube chassis, solid rear axle… |
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Circuit Digest Named Digital Content & Outreach Partner for electronica India 2026 21 August 2026: Circuit Digest has been named the Digital Content & Outreach Partner for electronica India 2026, taking place from 16–18 September at BIEC, Bengaluru. As part of the collaboration, Circuit Digest will identify relevant industry voices, shape discussion themes, host the conversations and distribute the resulting content across its website, YouTube channel and social… |
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Students Built a Submarine to Map Ice Thickness Across Frozen Lakes and Somehow Made GPS Work Underwater A team of engineering students from ETH Zürich has developed POLARIS, an autonomous underwater robot designed to measure and map the thickness of ice from underneath frozen alpine lakes. The idea is to make ice surveys safer and faster, especially in places where people need to know whether the ice is strong enough for activities such as racing or other work on frozen lakes. Traditionally, ice… |
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Gerber to PCB in 30 Minutes at Your Desk: PewCB One Pairs a Laser With Vias-Ready Double-Sided Blanks A new desktop machine called PewCB One wants to bring PCB fabrication into the same room as the engineer designing it. Instead of exporting a design and waiting on a fab house, PewCB One promises to turn Gerber files into a populated double-sided circuit board without leaving your desk.
The system is built around a 20 W, 1064 nm pulsed laser that… |
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Engineer Turns Mini Fridge Into a SLAM-Guided Tank Robot You'd Have to Chase for a Cold Drink Engineer Dorian Todd has built a self-driving mini fridge on tank treads that can autonomously chase or flee a person and reward them with a cold drink if caught. The project replaces the fridge's standard base with a tracked drivetrain powered by Repeat Robotics Ultra Mark II brushless gear motors designed for 12 lb combat robots. Todd 3D scanned both the metal tread assembly and the… |
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Andhra Pradesh Launches Twin AI Centres to Give DeepTech Startups GPU Power and Mentorship Andhra Pradesh has set up two new AI-focused facilities, one in Amaravati and one in Visakhapatnam, which began operating on July 28. The initiative comes with backing from the central government's electronics and IT ministry, working alongside the state's own IT and electronics department. Both sites will run under the… |
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Phantom Twist: The Spinning Drone That Hides in Plain Sight Northwestern University engineers have unveiled Phantom Twist, a groundbreaking low-visibility UAV that exploits human visual perception to hide in plain sight. The drone spins its entire body at up to 25 rotations per second using a single motor and counter-rotating propeller system. Unlike traditional quadcopters with stationary bodies, Phantom Twist has no fixed… |
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US-India NISAR Satellite Radar Reveals a 'Hummingbird' Etched in Antarctic Ice The NASA-ISRO Synthetic Aperture Radar (NISAR) satellite has produced an image of a mountain peak in East Antarctica that scientists have nicknamed "the hummingbird." The image shows Nunatak Zaterjavshijsja, a mountaintop poking through a stream of ice flowing northeast toward the ocean, and was generated using data from the satellite's L-band radar instrument collected during systems testing… |
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MIT Develops a Robotic Bird That Can Fly, Dive, and Swim We've seen drones that fly and underwater robots that swim, but combining both into a single machine has remained a major engineering challenge. Researchers at MIT's Department of Mechanical Engineering have now developed a bio-inspired robotic bird capable of flying through the air, diving into water, swimming beneath the surface, and taking off again. Inspired by… |
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Amphenol's Interconnect Solutions: A Technical Overview of ExaMAX, HD Express, AirMax VS, and XCede Modern server and data center design places increasing demands on the physical interconnect layer. At 112 Gbps and beyond, connectors are no longer treated as simple passive components; their design has a direct impact on crosstalk, impedance continuity, and mechanical integrity across the system. The following provides a technical overview of four Amphenol interconnect product families… |
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Two-Way Holographic Display with Wemos D1 Mini This display can show two different images at the same time - no VR headsets, no software tricks, just pure optics. This is a two-way holographic display made by Julius Makes. The whole idea is that two players, sitting opposite to each other, should see the mystery instructions meant for the other person. Plus, they should be able to see their faces through the… |
