ESP8266 Smart Vents Keep Tabs On Home Temps

August 18, 2022 by Tom Nardi 50 Comments

Have you ever found that, despite having a central heating and air conditioning system, that not all the rooms in your home end up being the temperature you want them to be? Maybe the dining room gets too hot when the heater is running, or the bedroom never seems to cool off enough in the summer months. If that sounds like your house, then these motorized “smart vents” from [Tony Brobston] might be exactly what you need.

The idea here is pretty simple: an ESP8266 and a servo is built into the 3D printed vent register, which allows it to control the position of its louvers. When connected to your home automation system via MQTT, the vents allow you to control the airflow to each room individually based on whatever parameters you wish. Most likely, you’ll want to pair these vents with an array of thermometers distributed throughout the house.

While [Tony] says the design still needs some testing, he’s released smart vents in a range of sizes from 2×10 to 6×12 inches. He’s also provided excellent documentation on how to print, assemble, and program the devices. It’s clear that a lot of care and thought went into every element of this project, and we’re excited to see how it can be developed further by the new ideas and contributors that will inevitably pop up now that it’s gone public.

Want to add some automation to your HVAC, but don’t have a fancy central unit? Don’t worry, as long as your heater or air conditioner has an infrared remote, you should be able to wedge a WiFi-enabled microcontroller in into the equation.

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A Particularly Polished ATX Bench Power Supply

August 18, 2022 by Tom Nardi 43 Comments

Let’s be real, yanking the ATX power supply out of an old desktop computer and turning it into something you can use on the workbench isn’t exactly an advanced project. In fact, you could probably argue it’s one of the first DIY builds a budding electronic hobbyist should tackle — after all, you’re going to need a reliable bench supply if you want to do any serious work anyway.

But of course, there’s a big difference between doing the minimum and really giving something your all, and we think this ATX bench supply from [Steve Thone] of The Neverending Projects List is a phenomenal example of the latter. It not only looks impressive, but it’s been tricked out with plenty of bells and whistles to make it as capable as possible. What was once a basic 230 watt PSU pulled from an old Dell is now a piece of gear that any hacker or maker would love to have in their collection. Continue reading “A Particularly Polished ATX Bench Power Supply” →

Back To The Future Prop Can Tell When It Hits 88 MPH

August 17, 2022 by Tom Nardi 8 Comments

Obviously, the most iconic piece of fictional hardware from the Back to the Future films is Doc Brown’s DeLorean DMC-12 time machine. But we’d have to agree with [Jason Altice] of CodeMakesItGo that the second-most memorable gadget is the modified Futaba remote control used to control the DeLorean from a distance. Now, thanks to his detailed build guide, you can build your own version of the time machine’s controller — complete with working speed readout.

Now to be clear, [Jason] isn’t claiming that his build is particularly screen accurate. It turns out that the actual transmitter used for the prop in the film, the Futaba PCM FP-T8SGA-P, has become difficult to find and expensive. But he argues that to the casual observer, most vintage Futaba transmitters are a close enough match visually. The more important part is recreating the extra gear Doc Brown bolted onto his version. Continue reading “Back To The Future Prop Can Tell When It Hits 88 MPH” →

Discreet CO2 Monitor Hides Elegant Internal Layout

August 16, 2022 by Tom Nardi 6 Comments

Outwardly, this sleek CO2 monitor designed by [Daniel Gernert] might look like something cooked up in Amazon’s consumer electronics division. But open up that 3D printed case, and you’ll find a surprisingly low parts count that’s been cleverly packed in so as to make the most of the enclosure’s meager internal dimensions.

There are, if you can believe it, just three principle components to this device: a Seeed Studio Seeeduino XIAO microcontroller, a Infineon S2GO PAS CO2 sensor board, and a ring of WS2812B LEDs. You could even delete the ring altogether and replace it with a single addressable LED to accomplish the same goal, but we’d say the full ring is money-well-spent if you’re going to spin up your own copy.

Functionality is very straightforward — the LED ring will indicate the detected CO2 concentration by lighting up green and working its way through yellow and onto red. The sensor has no wireless capability, but if you plug it into your computer, you can get a local readout of current conditions.

We love environmental monitoring solutions here almost as much as we love intricately designed 3D printed enclosures. If you’d like to see another project where those two concepts aligned, check out this printable ESP8266 sensor enclosure.

DIY Gaming Mouse Beats The Competition, Costs Less

August 15, 2022 by Tom Nardi 33 Comments

We’ve seen plenty of custom keyboards here on Hackaday. Seriously, like more than we can count. But custom mice? Those are far more elusive. Though we wouldn’t be surprised to see that change should this excellent example from [Tyler Richard] catch on.

How the mouse sees the date on a US quarter

The goal was to build a customizable mouse that could match the performance of Logitech’s MX Master 3, but without the $100 USD price tag. In the end, [Tyler] says his mouse is around 10x as responsive thanks to a 1,000 Hz refresh rate, and the total cost is just a fraction of the retail price of the Logitech. Though as you might expect, there’s a catch or two.

For one thing, he says getting your hands on the PixArt PMW3389 mouse sensor in single quantities can be difficult. It seems like he was able to secure a sample because he’s a student, but you’ll have to figure out your own way to ~~con~~ secure one from the company. There’s also no friendly GUI to configure the mouse, and indeed, you’ll need to write some code should you want to modify any of its buttons. Oh, and despite the fact that the cheapo donor mouse you need to use for parts is wireless, the replacement guts you’ll be fitting it with currently only support wired operation.

Alright, we’ll admit it’s not perfect. But it’s still a huge step in the right direction if you care about being able to spin up your own input devices. With some refinement, and perhaps somebody willing to do bulk buy of the sensors, we could see this project becoming quite popular. In the meantime, you may have to settle for a macro stool.

Get Your Raspberry Pi Jamming With MuPiBox

August 15, 2022 by Tom Nardi 7 Comments

Over the years we’ve seen a lot of Raspberry Pi boards pushed into service as media players. In fact, second to emulating old game consoles, that’s probably the Pi’s most common vocation when it comes to DIY builds. But despite the popularity of this particular use case, it seems like each one has had to reinvent the wheel.

Perhaps there’s where MuPiBox fits in. Developed by [Eric Gerhardt] and [Olaf Split] with the assistance of [Andreas Lippmann] and [Andrew Frericks], this project aims to turn everyone’s favorite Linux single-board computer into everyone’s favorite music player. MuPiBox provides not only the software to run your new high-tech boom box, but it even standardizes the hardware design and provides a 3D printable enclosure — though naturally there’s still room for interpretation if you don’t want yours to look exactly like all the others.

Your MuPiBox can look like whatever you want.

At the very minimum you’ll need a Raspberry Pi, a HifiBerry MiniAmp, and a speaker, though the instructions also recommend you invest in a Pimoroni OnOff SHIM (or wire up something comparable) to facilitate more graceful shutdowns. For the best experience you’ll also want a five inch Waveshare touch screen display and a USB power bank so your beats can go mobile.

The video below shows off the polished stock GUI, which is simple enough that even children should be able to navigate around and find their favorite tracks. Which is good, especially since it’s in German. The video also shows off some advanced setup features so you don’t have to pull the SD card out of the Pi just to change the WiFi network it’s attached to. There’s also a web interface that you can access from other devices on the network.

It’s a slick project, and we really like the aesthetics of the 3D printable enclosure. But even if you don’t want to replicate the project exactly, there’s certainly components here which could be utilized in your own Pi media center build.

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Homebrew Biped Bot Shows Off Some Impressive Moves

August 12, 2022 by Tom Nardi 6 Comments

We’ve seen enough DIY robotic platforms here on Hackaday to know that most of them take the literal and figurative path of least resistance. That is, they tend to be some type of wheeled rover. But of course, there are plenty of other forms of locomotion, should you want to take on something a bit more challenging.

This biped robot from [Tast’s Robots] is a perfect example. While it’s still technically wheeled, its self-balancing nature makes things quite a bit more complex. It doesn’t just stand upright either, it also has a unique ability to crouch down by rotating its motorized knees and hips. As demonstrated in the video below, it can even navigate relatively uneven terrain — pulling off such a smooth transition between hardwood and carpet is no easy feat for a self-balancing bot like this.

But the best part? It isn’t just fully open source, it’s also designed to be built with only the tools and capabilities available to the average home gamer. That means 3D printed components, wooden dowels, and RC car parts. Even the power supply, a Ryobi 18 V tool battery, is easy to source and relatively hacker friendly.

Just as impressive as the hardware is the suite of software packages developed to handle things like balancing, locomotion, and reverse kinematics. Each one is maintained and documented as their own individual Apache-licensed projects, making them far easier to utilize than they would be if it was all implemented as one monolithic system.

If you really want to ditch the wheels, we’ve seen a few biped walkers in the past. But frankly, none of them can compare to the capabilities and scope of this project.

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