Building a DIY laser modem

Reading Time: 2 minutes Arduino Team — August 8th, 2022 All digital communication ultimately comes down to transmitting ones and zeroes, but there are many ways to achieve that. One can encode that binary data as modulation in a radio signal or simply pulse electricity through a wire. But one of the most interesting methods is optical. Flashing a…… Building a DIY laser modem weiterlesen

Making makers

Reading Time: 3 minutes The world is full of people who have lost touch with the mechanical roots of technology. They use shiny devices made of glue and glass, with components sealed away and moving parts that are only visible at the microscopic level. They lack heart and soul, and any sense of wonder or joy. The word ‘algorithm’…… Making makers weiterlesen

This high-precision AC meter handles inductive loads

Reading Time: 2 minutes Arduino Team — August 5th, 2022 AC (alternating current) meters are useful tools for measuring power draw. One might use an AC meter to monitor the power consumption of their devices and appliances with the goal of lowering their energy bill. Makers in particular can benefit from AC meters to learn about the power consumption…… This high-precision AC meter handles inductive loads weiterlesen

SystemSix: a modern homage to Macintosh computers

Reading Time: 3 minutes Dubbed a “desk accessory”, it displays the local weather, a calendar, the current phase of the moon, and even the bin collection day, among other things. But what makes it extra-special is that it’s housed on a stylish laser-cut piece of acrylic, bent to allow it to stand. It’s an impressive piece of work. Introducing…… SystemSix: a modern homage to Macintosh computers weiterlesen

Over-engineered robotic scalp scratcher knows all the moves

Reading Time: 2 minutes Arduino Team — August 5th, 2022 Those cheap wire-arm head massagers are great at giving your scalp a nice, relaxing rub. But they’re handheld implements that force the user to either manipulate the massager themselves or talk a partner into performing the task. David McDaid decided that the experience would be much more pleasant if…… Over-engineered robotic scalp scratcher knows all the moves weiterlesen

LEGO-firing turret targets tender tootsies

Reading Time: 2 minutes Arduino Team — August 4th, 2022 Stepping on LEGO bricks is a meme for a reason: it really @#$%&! hurts. LEGO brick design is ingenious, but the engineers did not consider the ramifications of their minimalist construction system. We’ve seen people do crazy things for Internet points, such as walk across a bed of LEGO…… LEGO-firing turret targets tender tootsies weiterlesen

Reducing automotive fuel consumption with an Arduino

Reading Time: 2 minutes Arduino Team — August 4th, 2022 Every car sold in the last few decades is equipped with an engine control unit, or ECU for short. Its job is to control nearly every aspect about the vehicle’s performance by reading various sensors and acting upon those inputs accordingly. However, some older rides aren’t nearly as performant…… Reducing automotive fuel consumption with an Arduino weiterlesen

This air cleaner activates when it hears shop tools running

Reading Time: 2 minutes Arduino Team — August 4th, 2022 Air cleaners are indispensable appliances in shop environments. Fine sawdust in the air can, for example, cause a variety of respiratory ailments in woodworkers. Even if the tool itself has a vacuum collection system, dust will fill the air. But air cleaners are noisy and require quite a lot…… This air cleaner activates when it hears shop tools running weiterlesen

Adding a battery gauge to a Citroën C-Zero electric car

Reading Time: 2 minutes Arduino Team — August 3rd, 2022 The Citroën C-Zero is an electric city card sold in the European market. It is a rebadged Mitsubishi i-MiEV, which is based on the Mitsubishi i kei car platform. Kei cars, in Japan, are a special class that receive government and insurance benefits for being so small. As a…… Adding a battery gauge to a Citroën C-Zero electric car weiterlesen

Mini pupper robot review

Reading Time: 2 minutes ROS (Robotic Operating System) is the OS installed on Raspberry Pi for Mini Pupper, and Mini Pupper includes OpenCV, SLAM (Simultaneous Localization and Mapping), and other navigation technologies. It will create a map of an area, much like a Roomba so that it can navigate it better. Pupper in the window Our Mini Pupper came…… Mini pupper robot review weiterlesen

Reading typewriter key presses with an Arduino

Reading Time: 2 minutes Arduino Team — August 3rd, 2022 There was a period in the late ‘70s and into the ‘80s when typewriter manufacturers tried to keep up with the tide of the digital age. Personal computers were hitting prices that middle-class families could justify and even the most basic models were far more practical than the best…… Reading typewriter key presses with an Arduino weiterlesen

Introducing multitasking to Arduino

Reading Time: 2 minutes Introducing multitasking to Arduino Alessandro Ranellucci — August 2nd, 2022 With the increased capabilities of Arduino and other microcontroller boards, including faster clocks or even multiple cores, the need to handle multiple tasks simultaneously arises more often than in the past. For instance, you often want to control motors, update a display and detect user…… Introducing multitasking to Arduino weiterlesen

Arduino-controlled robot solves Rubik’s Cubes in a couple seconds

Reading Time: 2 minutes Arduino Team — August 1st, 2022 Rubik’s Cubes have been sold in stores for more than 40 years now, but most of us still can’t solve them. Others take the puzzles very seriously, competing in many speed-solving competitions around the world. The world record for the fastest Rubik’s Cube solution is a mere 3.47 seconds,…… Arduino-controlled robot solves Rubik’s Cubes in a couple seconds weiterlesen

DIY SawStop saves fingers from shop mishaps

Reading Time: 2 minutes Arduino Team — August 1st, 2022 Many power tools have the potential to cause serious harm, but few are as dangerous as table saws. But table saws are also indispensable for woodworking, which means that people are willing to risk their fingers to use them. There is a manufacturer called SawStop that builds table saws…… DIY SawStop saves fingers from shop mishaps weiterlesen

Pico railway clock

Reading Time: 3 minutes Old timer “We bought a railway station clock from a flea market and were a bit crestfallen when nothing happened when we plugged it in,” explains Martin. “The nice man who sold it seemed adamant that it worked, so after a bit of reading, I found out that it was waiting for a signal from…… Pico railway clock weiterlesen

Super Simple Robotics in The MagPi magazine issue #120

Reading Time: 3 minutes Super Simple Robotics Rolling a wheeled robot around with code is a cool thing to do with Raspberry Pi. Turning a jumble of wires and wheels into a controllable critter is much easier than you’d imagine. This month’s cover feature explains how motors, servos, and sensors all work together. Plus we look at some of…… Super Simple Robotics in The MagPi magazine issue #120 weiterlesen

Centimeter-scale lawn mower positioning without GPS RTK

Reading Time: 2 minutes Arduino Team — July 27th, 2022 GPS is perfect for navigating roads, because that doesn’t require much precision. But GPS is only accurate to several meters, which means that it is unsuitable for applications that require more precise positioning. GPS RTK (real-time kinematic) systems can achieve much greater accuracy, but they are complex and require…… Centimeter-scale lawn mower positioning without GPS RTK weiterlesen

This walking machine can mosey in any direction

Reading Time: 2 minutes Arduino Team — July 27th, 2022 Wheeled vehicles are so common because they’re efficient. If a vehicle will drive on a relatively smooth and flat surface, wheels are the most efficient option. But on rough terrain, wheels don’t always cut it. For such terrain, tank tracks and more exotic options often perform better than wheels.…… This walking machine can mosey in any direction weiterlesen

This system detects leaks by listening to water flowing through pipes

Reading Time: 2 minutes Arduino Team — July 27th, 2022 Damaged, leaking pipes are not only a nuisance to clean up after, but they can also create major inefficiencies within water delivery systems, leading to a loss in both the water itself and the electricity required to disinfect and pump it. Over the past decade, water pipeline detection systems…… This system detects leaks by listening to water flowing through pipes weiterlesen

Win a PecanPi DAC Rev 3.0!

Reading Time: < 1 minutes Save 35% off the cover price with a subscription to The MagPi magazine. UK subscribers get three issues for just £10 and a FREE Raspberry Pi Pico W, then pay £30 every six issues. You’ll save money and get a regular supply of in-depth reviews, features, guides and other Raspberry Pi enthusiast goodness delivered directly…… Win a PecanPi DAC Rev 3.0! weiterlesen

A DIY thermally actuated deformable mirror

Reading Time: 2 minutes Arduino Team — July 25th, 2022 In typical applications, the optimal mirror is as flat as possible. The flatter the mirror, the less optical distortion it imparts onto the reflected “image.” Distortion isn’t often desirable, so precision mirror manufacturers take great pains to manufacture ultra-flat mirrors. But distortion is sometimes a good thing, such as…… A DIY thermally actuated deformable mirror weiterlesen

Reviving a vintage secondary split-flap clock with Arduino

Reading Time: 2 minutes Arduino Team — July 25th, 2022 In the world of computing, many interfaces utilize a primary/secondary model of asymmetric communication, in which a primary host device controls one or more secondary client devices. This model is, for example, common among PATA and SATA hard drive arrangements. It is also common in clock networks, with a…… Reviving a vintage secondary split-flap clock with Arduino weiterlesen