Arduino DC Motor Speed Control using Potentiometer and MOSFET Transistor

Arduino DC Motor Speed Control using Potentiometer and MOSFET Transistor

From a simple electronic toothbrush to complicated robotics systems, DC motors are present everywhere. In most of our previous Arduino projects, we have used these DC motors as actuators and regardless of the application, controlling the speed and direction of these motors is essential to make them functional and effective.

Rithik Krisna Mon, 05/27/2024 - 13:20

Pikmin Bloom has been helping me meet my outdoor walking goals for years

Over the past few years, I’ve developed a peaceful little routine to make up for time spent cooped up inside working on sunny days: after I’ve closed my laptop for the day, I throw my sneakers on, open Pikmin Bloom on my phone, and go for a long walk to clear my head and plant virtual flowers with the 'min.

Pikmin Bloom was released for Android and iOS in 2021 by Pokémon Go developer Niantic and Nintendo as another “go outside and touch grass” app, and I’ve been playing it pretty regularly since then. Only recently, when the app announced some special events for its 2.5-year anniversary, did it occur to me how long I’ve actually stuck with it. There isn’t all that much to Pikmin Bloom, but that’s part of the charm — it’s more of a walking buddy than a full-on game. You accumulate Pikmin, feed them nectar so they’ll grow flowers from their heads, then pick the petals and use those to “plant flowers” when you go on walks (don’t think too hard about the science of that, it’s Pikmin).

Unlike Pokémon Go, Pikmin Bloom doesn’t require a lot of your attention while you’re walking around, which really appealed to me as someone who likes to stay fully aware of their surroundings while out and about. That, and the promise of being accompanied wherever I go by a horde of quietly singing Pikmin; I just love those weird little guys.

I typically get everything set up before I leave for a walk, making sure I have plenty of petals ready to plant. Then I hit the ‘Start’ button and mostly leave the app alone until I take a break or am done with my walk, checking in only here and there to see if I’ve passed anything of interest. You can send your Pikmin on expeditions to pick up fruit or destroy mushrooms that’ll pop up on your map, but you don’t need to be actively walking to do this, as they’ll be recorded on a list you can revisit later. Once I’m back home, I love seeing how many flowers I planted versus how many steps I took (I still haven’t figured out the ratio), and delegating different missions for my Pikmin to tackle.

There are frequent events that serve as motivation for reaching certain step count goals or planting a particular number of flowers, including some with community involvement. And, there's the prospect of collecting themed Pikmin who wear special decor outfits. Pikmin Bloom is currently teasing some upcoming Cheese Decor Pikmin for next month, and I’m going to work extra hard to try and get them. While the app does have the potential to lure players into in-app purchases, they’re by no means necessary to get the full experience. I’ve managed to make it this far without spending any money at all.

Pikmin Bloom has an AR component similar to Pokémon Go’s, so you can photograph your Pikmin in the real world, but this feature can be pretty glitchy. What’s better than that, in my opinion, are the postcards your Pikmin will sometimes bring back from their travels — they’ve been known to photobomb landmarks in these pictures on occasion. If you have friends in the app, you can send postcards to them too. Pikmin Bloom also has a built-in lifelog, where you can choose a picture from your walk and jot down any notes and feelings from your day. It’s a nice thing to look back on once you’ve racked up a lot of adventures.

I’ve tried out plenty of apps over the years that attempt to gamify physical activity, but I almost always lose interest in them pretty quickly. For all its simplicity, Pikmin Bloom adds just the right amount of reward to a walk without distracting from the actual activity. Plus, there are Pikmin.

This article originally appeared on Engadget at https://www.engadget.com/pikmin-bloom-has-been-helping-me-meet-my-outdoor-walking-goals-for-years-000025214.html?src=rss

The Ninja Creami ice cream maker is down to $149 for Memorial Day

It’s officially ice cream season, and if you’ve been wanting to try your hand at making the dessert yourself, Walmart has a deal you might be interested in. The Ninja Creami ice cream maker is $50 off right now, bringing the price down to $149 — the best price we’ve seen for it all year. The Creami is designed for ease of use and gives you control over the texture of the finished product, so you can make ice cream, sorbet, milkshakes and other kinds of frozen treats.

The deal applies to the Ninja Creami model with 5 one-touch progams: Ice Cream, Sorbet, Milkshake, Lite Ice Cream and Mix-in (which lets you toss in embellishments like chocolate chips or nuts). It also comes with two 16oz pints to make and store your ice cream in. The Creami is one of our favorite kitchen gadgets and earned a review score of 90, requiring minimal work on your part to make ice cream with the ingredients of your choice. All you need to do is prep the mixture that will be your base, toss it in the freezer overnight, then pop it in the Creami for processing.

The Ninja Creami won’t take up too much counter space, and most of the parts can go in the dishwasher for an easy cleanup after using it. It operates a bit like a food processor, but uses what the company refers to as a Creamerizer Paddle that has two different types of blades to get a uniform texture. There’s one for shaving the frozen base and another for smoothing it all out. It also has dual drive motors that allow for both a spinning motion and downward pressure to make for a good churn.

Follow @EngadgetDeals on Twitter and subscribe to the Engadget Deals newsletter for the latest tech deals and buying advice.

This article originally appeared on Engadget at https://www.engadget.com/the-ninja-creami-ice-cream-maker-is-down-to-149-for-memorial-day-201104207.html?src=rss

iPhone users may get AI-generated emoji and more app customization than ever with iOS 18

iOS 18 may inject a little more fun into the iPhone experience. In the Power On newsletter this week, Bloomberg’s Mark Gurman reports that AI-generated emoji will be among the new features Apple shows off at WWDC next month. As if the current emoji library weren’t overwhelming enough, Gurman writes that the company “is developing software that can create custom emojis on the fly, based on what users are texting.” I, for one, cannot wait to see the cursed creations that are sure to come out of that one.

Apple is also reportedly making it so iPhone users will have more customization options for their apps and home screen, like the ability to change the color of app icons and arrange things more freely, rather than being locked into the grid layout. The latter especially would be a pretty big change for Apple, but surely a welcome one for any users who have been itching to get more creative with their home screen designs. Of course, these are still rumors, so don’t take any of it as set in stone.

There’s been a ton of talk about Apple’s AI plans in the leadup to its annual developers conference, which kicks off on June 10, but rather than debut anything too flashy at this stage, Gurman suggests Apple will stick to practical applications for the technology. Apple is expected to announce a partnership with OpenAI and, according to Gurman, may give an AI boost to things like Safari searches, Siri, photo retouching and voice memo transcriptions. The company may also introduce smart recaps for notifications, web pages and more.

This article originally appeared on Engadget at https://www.engadget.com/iphone-users-may-get-ai-generated-emoji-and-more-app-customization-than-ever-with-ios-18-181215663.html?src=rss

Someone made a Flappy Bird tribute for the Playdate that lets you use the crank to fly

Ah, Flappy Bird. It’s been a long time since I last gave any thought to the game-turned-cultural-phenomenon that briefly had us all in a chokehold a decade ago. At least, that was the case until this morning, when I stumbled upon a Reddit post announcing a Flappy Bird tribute for the Playdate and, without a moment’s hesitation, sideloaded it onto my device. Now here I am, absolutely hooked on this maddening little game once again. And, using the crank to control that silly little bird, it's even harder this time around. FlappyBird by Chibisuke is free and available to download for Playdate on itch.io. You’re welcome... or, I’m sorry.

FlappyBird is just like the OG game, but in grayscale. You can play using the up button on the D-pad, the ‘A’ button or the crank to guide the bird between the pipes, but I’ve been going with the latter for the extra challenge it adds. It also just feels like a perfect use of the crank, and I like making the most of the Playdate’s funky design whenever I can. There are other games inspired by Flappy Bird that you can get for the Playdate, like Cranky Bird and Flappybalt, but Chibisuke’s FlappyBird is a direct clone of Dong Nguyen’s infamous side-scroller. 

It’s definitely one way to get your heart rate up on a Sunday afternoon. Just, please do not ask me about my high score, I… don’t want to talk about it.

This article originally appeared on Engadget at https://www.engadget.com/someone-made-a-flappy-bird-tribute-for-the-playdate-that-lets-you-use-the-crank-to-fly-160647496.html?src=rss

Elon Musk is reportedly planning an xAI supercomputer to power a better version of Grok

Elon Musk told investors this month that his startup xAI is planning to build a supercomputer by the fall of 2025 that would power a future, smarter iteration of its Grok chatbot, The Information reports. This supercomputer, which Musk reportedly referred to as a “gigafactory of compute,” would rely on tens of thousands of NVIDIA H100 GPUs and cost billions of dollars to build. Musk has previously said the third version of Grok will require at least 100,000 of the chips — a fivefold increase over the 20,000 GPUs said to be in use for training Grok 2.0.

According to The Information, Musk also told investors in the presentation that the planned GPU cluster would be at least four times the size of anything used today by xAI competitors. Grok is currently in version 1.5, which was released in April, and is now touted to process visual information like photographs and diagrams as well as text. X earlier this month started rolling out AI-generated news summaries powered by Grok for premium users.

This article originally appeared on Engadget at https://www.engadget.com/elon-musk-is-reportedly-planning-an-xai-supercomputer-to-power-a-better-version-of-grok-204145785.html?src=rss

Over a million Switch owners have bought the worst mainline Resident Evil game ever

Resident Evil 6 has sold surprisingly well on the Nintendo Switch since it was ported to the console in 2019, despite it being almost universally panned by fans of the series. As spotted by Nintendo Life, RE6 just got added to Capcom’s Platinum Titles list, meaning it’s crossed the threshold of one million units sold. It sits at number 117 on the list, with a million downloads for the Switch (but not any other platforms).

RE6 stands out as a convoluted action game next to the titles that came before it, marking a dramatic shift away from survival horror. It has a lot going on, but not so much of the things people actually love about Resident Evil games. It’s gained some defenders over the years, though, I’ll give it that. Capcom brought Resident Evil 6 to the Switch in October 2019 and bundled it with RE4 and RE5 in the Resident Evil Triple Pack that was released around the same time, which surely helped its sales. 

This article originally appeared on Engadget at https://www.engadget.com/over-a-million-switch-owners-have-bought-the-worst-mainline-resident-evil-game-ever-170834260.html?src=rss

Uh-oh: ICQ is shutting down on June 26

ICQ, which used to be a very popular messaging app for a short period in the 90s and the early aughts, only has a month left before it joins the other apps and software of old in the great big farm in the sky. It will stop working on June 26, according to it website, which also encourages users to move to VK Messenger for casual chats and to VK WorkSpace for professional conversations. ICQ came into the picture at a time when most people were using IRC to chat. IRC, however, was mostly meant for group conversations — ICQ made it easy to communicate one-on-one. 

Users who signed up for an account got assigned a number that grew longer as time went on, because it was issued sequentially. The shortest numbers had five digits, which means users who got them were there at the very beginning. ICQ peaked in the early 2000s when it reached 100 million registered accounts. And while it didn't take a long time for AIM, Yahoo Messenger and MSN Messenger to eclipse its popularity, ICQ's iconic "uh-oh!" notification sound remains memorable for a lot of internet users during that era. 

ICQ, derived from the phrase "I seek you," was developed by Israeli company Mirabilis. It was then purchased by AOL and then by the Russian company Mail.Ru Group that's now known as VK, which has its own social networking and messaging services.

This article originally appeared on Engadget at https://www.engadget.com/uh-oh-icq-is-shutting-down-on-june-26-153048381.html?src=rss

Meta and Activision face lawsuit by families of Uvalde school shooting victims

The families of the shooting victims at Robb Elementary School in Uvalde, Texas have sued Call of Duty publisher Activision and Meta. They alleged that the companies "knowingly exposed the shooter to the weapon [he used], conditioned him to see it as the solution to his problems, and trained him to use it." The plaintiffs also accused the companies of "chewing up alienated teenage boys and spitting out mass shooters." 

In the lawsuit, the plaintiffs explained that the Uvalde shooter played Call of Duty, which featured an assault-style rifle made by gunmaker Daniel Defense. They also mentioned that he frequently visited Instagram, which advertised the gunmaker's products. The lawsuit claimed, as well, that Instagram gives gunmakers "an unsupervised channel to speak directly to minors, in their homes, at school, even in the middle of the night." It argued that the shooter was "a poor and isolated teenager" from small town Texas who only learned about AR-15s and set his sights on it, because he was exposed to the weapon from playing Call of Duty and visiting Instagram. In addition, it accused Meta of being more lenient towards firearms sellers than other users who break its rules. Meta prohibits the buying the selling of weapons and ammunition, but users can violate the policy 10 times before they're banned from its platforms. 

"The truth is that the gun industry and Daniel Defense didn’t act alone. They couldn’t have reached this kid but for Instagram," the plaintiffs' lawyer, Attorney Josh Koskoff, said at a news conference. "They couldn’t expose him to the dopamine loop of virtually killing a person. That's what Call of Duty does." Koskoff's law firm was the same one who reached a $73 million settlement with rifle manufacturer Remington for the families of the Sandy Hook Elementary School shooting victims. 

An Activision spokesperson told The Washington Post and Bloomberg Law that the "Uvalde shooting was horrendous and heartbreaking in every way," and that the company expresses its deepest sympathies to the families, but "millions of people around the world enjoy video games without turning to horrific acts."

This article originally appeared on Engadget at https://www.engadget.com/meta-and-activision-face-lawsuit-by-families-of-uvalde-school-shooting-victims-130025901.html?src=rss

Roomba robot vacuums are up to $425 off for Memorial Day

If you’ve been craving some help with cleaning, this Memorial Day Roomba sale may be up your alley. Wellbots has the iRobot Roomba Combo J9+, Engadget’s favorite vacuum-mop combo, for $425 off. The machine not only cleans floors and carpets; its redesigned dock can automatically empty debris and refill it with mopping liquid. Use the exclusive code ENG425 to get iRobot’s top-of-the-line combo cleaner for $974.

Although that’s still a hefty price for a cleaning robot, you’re getting a premium product in return. The Roomba Combo J9+ has an upgraded motor and a four-stage cleaning system that takes multiple passes across your floors and carpets. This latest model, which arrived only last fall, has dual rubber brushes for optimal suction and pressurized scrubbing.

The robot has an updated Clean Base that automatically refills its water tank while looking more like a nice home appliance than a gadget’s charging dock. It automates as much of the setup process as possible, leaving you only to attach its mop pad and add water and cleaning solution. As for upkeep, you merely swap out its mop pads when needed and clean the Roomba’s bristles and bin.

Wellbots also offers the standard Roomba J9+ — the mop-less variant — for $325 off with the code ENG325. This model has all the vacuuming features from the more expensive Combo version. That includes stronger suction, multi-surface rubber brushes and a three-stage cleaning system. Usually $899, the coupon brings its price down to $574.

If you’re looking for a vacuum-mop combination robot for cheaper, the previous-generation Roomba Combo J7+ is $225 off with the code ENG225 (usually $999). This model skips out on some of the high-end features in the J9+ but still offers obstacle avoidance and a four-stage cleaning system. It can return to its base when it’s full and empty itself for up to 60 days before you have to empty its bin.

Follow @EngadgetDeals on Twitter and subscribe to the Engadget Deals newsletter for the latest tech deals and buying advice.

This article originally appeared on Engadget at https://www.engadget.com/roomba-robot-vacuums-are-up-to-425-off-for-memorial-day-130015162.html?src=rss