Howchoo – How-to and DIY Guides for Makers, Programmers, and Everyone

The Raspberry Pi micro-computer grows in power with each new model release, with more resources that make it a more capable, low-cost content server for your media and resources.

Laptops, smartphones, tablets, even lightbulbs—an endless number of devices now have the ability to connect to your local network and the wider internet.

The Raspberry Pi was designed to boot from an SD card, but in some cases, it’s convenient to boot from a USB drive.

Get the new official Raspberry Pi OS on your Pi.

New to the Raspberry Pi? Start here.

Blocking ads just got easier with Pi-hole, a network-wide ad blocker for the Raspberry Pi

Don’t skip out on a proper case for your Pi 4.

The only Raspberry Pi Bluetooth guide you’ll ever need.

Your favorite MS OS on the Pi.

The Raspberry Pi is a small, inexpensive computer developed by the Raspberry Pi Foundation in the United Kingdom.

215 guides Explore

For those who love hobby electronics, burning themselves on soldering irons, and figuring out how the world works.

8 guides Explore

Posted on December 2, 2019 by admin

Updated: December 2nd, 2019

Build Your Own Google Home-Enabled Smart Mirror in About Two HoursMagic mirror, on the wall, turn off the lights.

We’re hiring. Write for Howchoo

PRIMARY

201 guides

18 guides

4 guides

Add voice controls to your Raspberry Pi using Jasper

How to Install Magic Mirror on Your Raspberry Pi

We’re hiring. Write for Howchoo

Joined in 2015

233 guides

Web developer, designer, tinkerer, and beer enthusiast living in Tampa, Florida.

howchoo howchoo

Raspberry Pi livestreams each Thursday with new things for kids to code!

Michael View

In these interests: kids news pi

For Raspberry Pi beginners who still love to follow along in a book.

Michael View

In these interests: books retropie pi

What’s better than an experiment? An experiment in space!

Michael View

In these interests: kids pi news

Ready, Set, Race!

Kali Linux is a great distribution for Raspberry Pi users who want to get to grips with security testing.

The Raspberry Pi micro-computer grows in power with each new model release, with more resources that make it a more capable, low-cost content server for your media and resources.

Laptops, smartphones, tablets, even lightbulbs—an endless number of devices now have the ability to connect to your local network and the wider internet.

The Raspberry Pi was designed to boot from an SD card, but in some cases, it’s convenient to boot from a USB drive.

Get the new official Raspberry Pi OS on your Pi.

New to the Raspberry Pi? Start here.

Blocking ads just got easier with Pi-hole, a network-wide ad blocker for the Raspberry Pi

Don’t skip out on a proper case for your Pi 4.

The only Raspberry Pi Bluetooth guide you’ll ever need.

The Raspberry Pi is a small, inexpensive computer developed by the Raspberry Pi Foundation in the United Kingdom.

201 guides Explore

“He who works with his hands is a laborer. He who works with his hands and his head is a craftsman. He who works with his hands and his head and his heart is an artist.” – Francis of Assisi

18 guides Explore

Mirror, mirror on the wall: who’s the nerdiest of them all?

4 guides Explore

Posted on December 1, 2019 by admin

Joined in 2018

223 guides

Ash is an experienced tech writer with an endless passion for technology. She enjoys retro gaming, 3D printing, and making awesome projects on the Raspberry Pi.

ashpuckettb2b

You can’t print money, but you can make money printing.

Ash View

In these interests: 3dprinting

Access OctoPrint from anywhere with this OctoPrint Anywhere replacement.

Ash View

In these interests: pi octoprint 3dprinting

No printer? No problem.

Zach View

In these interests: 3dprinting

How to choose, install, and use a glass bed with your printer.

Time to Switch on the fun!

Build your dream case one line at a time!

Time for this project to take shape.

APPROVED! REJECTED! APPROVED!

Yes the holidays are already here!

Get the printer ready, it’s time to play!

Think of it like a 2D printer, but with an extra dimension.

53 guides Explore

View openings

Follow @howchoo and learn cool things:

Like what we do?

Donate

Sitemap Terms of use Privacy policy DMCA requests CA Residents: Do Not Sell My Personal Information

Want to support Howchoo? When you buy a tool or material through one of our Amazon links, we earn a small commission as an Amazon Associate.

Follow @howchoo and learn cool things:

Like what we do?

Donate

Sitemap Terms of use Privacy policy DMCA requests CA Residents: Do Not Sell My Personal Information

Want to support Howchoo? When you buy a tool or material through one of our Amazon links, we earn a small commission as an Amazon Associate.

Posted on December 1, 2019 by admin

Home Interests

javascript code webdev

Dayne (57)

Updated: December 1st, 2019

Newer JavaScript developers are bound to be confused by the many ways to do a simple loop. Everyone seems to use for (var i=0; i < array.length; i++), but is there a simpler syntax? How do I handle objects? And what is forEach?

This guide will teach you how to use each option while taking you through my journey to find the one for loop operator to use 100% of the time so I never have to think about it again.

Posted in these interests:

PRIMARY

27 guides

68 guides

58 guides

You know it, you love it, the loop classic:

let fruits = ["apple", "banana", "jackfruit"]; for (let i = 0; i < fruits.length; i++) { console.log(fruits[i].slice()); }

It works but isn’t there something nicer to use out there?

for...in is not what you are looking for. You might think you can do this:

// BAD CODE let fruits = ["apple", "banana", "jackfruit"]; for (let fruit in fruits) { console.log(fruit.slice()); }

But this prints the following:

0 1 2

It prints the index of each item because the for...in loop iterates through an object’s enumerable properties. For an object, that iterates through the object’s keys. For an Array, that is actually the index.

We can fix the code by doing the following:

let fruits = ["apple", "banana", "jackfruit"]; for (let fruit in fruits) { console.log(fruits[fruit].slice()); }

But now we have a super confusing line there: fruits[fruit]

Add to that, Mozilla explicitly warns users not to use for...in if the order of the elements matters.

Why, JavaScript?

for...of is actually closer to what you’d expect from a simple loop operator. It works like this:

let fruits = ["apple", "banana", "jackfruit"]; for (let fruit of fruits) { console.log(fruit.slice()); }

This outputs what you would expect (hope at this point).

One major snag though, you do not have access to the key, which in this case is the index that for...in was printing. It’s pretty common to need the index so this cannot be the solution I always reach for.

forEach is a method that can be called on Arrays. It looks like this in the wild:

var fruits = ["apple", "banana", "jackfruit"]; fruits.forEach(function(fruit) { console.log(fruit.slice()); });

Slice pun aside, this is pretty simple right? It isn’t the most elegant syntax necessarily but it reads very well and it seems like it’s going to do what it says it’s going to do. Does this means it can be the tool you always reach for? For many yes, but there is one gotcha that breaks the deal for me. You cannot a break or continue operator within the loop and the return statement does nothing whatsoever.

I was so close to just accepting forEach but that snag was big enough that I could never feel truly secure reaching for it 100% of the time.

That’s right. The OG for (var i=0; i < array.length; i++) syntax won in the end. Between the rapport I already had with this operator and the fact that every JavaScript developer I know is very familiar with it, I decided to stop seeking greener pastures and stick with what I knew.

Honestly though, if it’s reasonable to include a third party library, lodash’s loops will solve all of your problems. They look just like forEach but you can use break, continue, and they are significantly faster.

let fruits = ["apple", "banana", "jackfruit"]; _.forEach(fruits, function(element, i) { console.log(element); });

javascript code webdev

Dayne (57)

Updated: December 1st, 2019

This guide will teach you how to use each option while taking you through my journey to find the one for loop operator to use 100% of the time so I never have to think about it again.

Posted in these interests:

PRIMARY

27 guides

68 guides

58 guides

You know it, you love it, the loop classic:

let fruits = ["apple", "banana", "jackfruit"]; for (let i = 0; i < fruits.length; i++) { console.log(fruits[i].slice()); }

It works but isn’t there something nicer to use out there?

for...in is not what you are looking for. You might think you can do this:

// BAD CODE let fruits = ["apple", "banana", "jackfruit"]; for (let fruit in fruits) { console.log(fruit.slice()); }

But this prints the following:

0 1 2

We can fix the code by doing the following:

let fruits = ["apple", "banana", "jackfruit"]; for (let fruit in fruits) { console.log(fruits[fruit].slice()); }

But now we have a super confusing line there: fruits[fruit]

Add to that, Mozilla explicitly warns users not to use for...in if the order of the elements matters.

Why, JavaScript?

for...of is actually closer to what you’d expect from a simple loop operator. It works like this:

let fruits = ["apple", "banana", "jackfruit"]; for (let fruit of fruits) { console.log(fruit.slice()); }

This outputs what you would expect (hope at this point).

forEach is a method that can be called on Arrays. It looks like this in the wild:

var fruits = ["apple", "banana", "jackfruit"]; fruits.forEach(function(fruit) { console.log(fruit.slice()); });

I was so close to just accepting forEach but that snag was big enough that I could never feel truly secure reaching for it 100% of the time.

let fruits = ["apple", "banana", "jackfruit"]; _.forEach(fruits, function(element, i) { console.log(element); });

javascript code webdev

Dayne (57)

Updated: December 1st, 2019

This guide will teach you how to use each option while taking you through my journey to find the one for loop operator to use 100% of the time so I never have to think about it again.

Posted in these interests:

PRIMARY

27 guides

68 guides

58 guides

You know it, you love it, the loop classic:

let fruits = ["apple", "banana", "jackfruit"]; for (let i = 0; i < fruits.length; i++) { console.log(fruits[i].slice()); }

It works but isn’t there something nicer to use out there?

for...in is not what you are looking for. You might think you can do this:

// BAD CODE let fruits = ["apple", "banana", "jackfruit"]; for (let fruit in fruits) { console.log(fruit.slice()); }

But this prints the following:

0 1 2

We can fix the code by doing the following:

let fruits = ["apple", "banana", "jackfruit"]; for (let fruit in fruits) { console.log(fruits[fruit].slice()); }

But now we have a super confusing line there: fruits[fruit]

Add to that, Mozilla explicitly warns users not to use for...in if the order of the elements matters.

Why, JavaScript?

for...of is actually closer to what you’d expect from a simple loop operator. It works like this:

let fruits = ["apple", "banana", "jackfruit"]; for (let fruit of fruits) { console.log(fruit.slice()); }

This outputs what you would expect (hope at this point).

forEach is a method that can be called on Arrays. It looks like this in the wild:

var fruits = ["apple", "banana", "jackfruit"]; fruits.forEach(function(fruit) { console.log(fruit.slice()); });

I was so close to just accepting forEach but that snag was big enough that I could never feel truly secure reaching for it 100% of the time.

let fruits = ["apple", "banana", "jackfruit"]; _.forEach(fruits, function(element, i) { console.log(element); });

javascript code webdev

Dayne (57)

Updated: December 1st, 2019

This guide will teach you how to use each option while taking you through my journey to find the one for loop operator to use 100% of the time so I never have to think about it again.

Posted in these interests:

PRIMARY

27 guides

68 guides

58 guides

javascript code webdev

Dayne (57)

Updated: December 1st, 2019

Posted in these interests:

PRIMARY

27 guides

68 guides

58 guides

PRIMARY

27 guides

68 guides

58 guides

PRIMARY

We’re hiring. Write for Howchoo

PRIMARY

27 guides

68 guides

58 guides

PRIMARY

27 guides

68 guides

58 guides

PRIMARY

You know it, you love it, the loop classic:

let fruits = ["apple", "banana", "jackfruit"]; for (let i = 0; i < fruits.length; i++) { console.log(fruits[i].slice()); }

It works but isn’t there something nicer to use out there?

for...in is not what you are looking for. You might think you can do this:

// BAD CODE let fruits = ["apple", "banana", "jackfruit"]; for (let fruit in fruits) { console.log(fruit.slice()); }

But this prints the following:

0 1 2

We can fix the code by doing the following:

let fruits = ["apple", "banana", "jackfruit"]; for (let fruit in fruits) { console.log(fruits[fruit].slice()); }

But now we have a super confusing line there: fruits[fruit]

Add to that, Mozilla explicitly warns users not to use for...in if the order of the elements matters.

Why, JavaScript?

for...of is actually closer to what you’d expect from a simple loop operator. It works like this:

let fruits = ["apple", "banana", "jackfruit"]; for (let fruit of fruits) { console.log(fruit.slice()); }

This outputs what you would expect (hope at this point).

forEach is a method that can be called on Arrays. It looks like this in the wild:

var fruits = ["apple", "banana", "jackfruit"]; fruits.forEach(function(fruit) { console.log(fruit.slice()); });

I was so close to just accepting forEach but that snag was big enough that I could never feel truly secure reaching for it 100% of the time.

let fruits = ["apple", "banana", "jackfruit"]; _.forEach(fruits, function(element, i) { console.log(element); });

You know it, you love it, the loop classic:

let fruits = ["apple", "banana", "jackfruit"]; for (let i = 0; i < fruits.length; i++) { console.log(fruits[i].slice()); }

It works but isn’t there something nicer to use out there?

You know it, you love it, the loop classic:

let fruits = ["apple", "banana", "jackfruit"]; for (let i = 0; i < fruits.length; i++) { console.log(fruits[i].slice()); }

It works but isn’t there something nicer to use out there?

for...in is not what you are looking for. You might think you can do this:

// BAD CODE let fruits = ["apple", "banana", "jackfruit"]; for (let fruit in fruits) { console.log(fruit.slice()); }

But this prints the following:

0 1 2

We can fix the code by doing the following:

let fruits = ["apple", "banana", "jackfruit"]; for (let fruit in fruits) { console.log(fruits[fruit].slice()); }

But now we have a super confusing line there: fruits[fruit]

Add to that, Mozilla explicitly warns users not to use for...in if the order of the elements matters.

Why, JavaScript?

for...in is not what you are looking for. You might think you can do this:

// BAD CODE let fruits = ["apple", "banana", "jackfruit"]; for (let fruit in fruits) { console.log(fruit.slice()); }

But this prints the following:

0 1 2

We can fix the code by doing the following:

let fruits = ["apple", "banana", "jackfruit"]; for (let fruit in fruits) { console.log(fruits[fruit].slice()); }

But now we have a super confusing line there: fruits[fruit]

Add to that, Mozilla explicitly warns users not to use for...in if the order of the elements matters.

Why, JavaScript?

for...of is actually closer to what you’d expect from a simple loop operator. It works like this:

let fruits = ["apple", "banana", "jackfruit"]; for (let fruit of fruits) { console.log(fruit.slice()); }

This outputs what you would expect (hope at this point).

for...of is actually closer to what you’d expect from a simple loop operator. It works like this:

let fruits = ["apple", "banana", "jackfruit"]; for (let fruit of fruits) { console.log(fruit.slice()); }

This outputs what you would expect (hope at this point).

forEach is a method that can be called on Arrays. It looks like this in the wild:

var fruits = ["apple", "banana", "jackfruit"]; fruits.forEach(function(fruit) { console.log(fruit.slice()); });

I was so close to just accepting forEach but that snag was big enough that I could never feel truly secure reaching for it 100% of the time.

forEach is a method that can be called on Arrays. It looks like this in the wild:

var fruits = ["apple", "banana", "jackfruit"]; fruits.forEach(function(fruit) { console.log(fruit.slice()); });

I was so close to just accepting forEach but that snag was big enough that I could never feel truly secure reaching for it 100% of the time.

let fruits = ["apple", "banana", "jackfruit"]; _.forEach(fruits, function(element, i) { console.log(element); });

let fruits = ["apple", "banana", "jackfruit"]; _.forEach(fruits, function(element, i) { console.log(element); });

We’re hiring. Write for Howchoo

Joined in 2015

57 guides

Software engineer, co-founder of Howchoo, and renaissance man. Lifelong amateur woodworker, espresso mechanic, freestyle lyricist, drummer, artist, runner, coffee roaster, electrical engineer, gamer, inventor, churner, psychoanalyst, photographer, pizza chef, pit master, audiophile, guitarist, entrepreneur, dad, yogi, cyclist, and barista.

daynejones

Text

Reddit Email Text

How to Pretty Print JSON in Chrome Developer Console

Make your object readable in console.

Zach View

In these interests: code javascript webdev

Remove Elements From an Array in JavaScript

When working with arrays in JavaScript, we often need to remove elements.

Tyler View

In these interests: code javascript

Enumerable properties are properties whose internal enumerable flag set to true.

Tyler View

In these interests: code javascript

Make your object readable in console.

Zach View

In these interests: code javascript webdev

View code javascript webdev

When working with arrays in JavaScript, we often need to remove elements.

Tyler View

In these interests: code javascript

View code javascript

Enumerable properties are properties whose internal enumerable flag set to true.

Tyler View

In these interests: code javascript

View code javascript

This guide demonstrates multiple ways to iterate over a JavaScript object’s properties and values.

There are two very similar statements in JavaScript: for…in and for…of. And while they can be easily confused, they’re actually quite different.

As a JavaScript developer, you’ll often need to construct URLs and query string parameters. One sensible way to construct query string parameters is to use a one layer object with key value pairs.

Writing tests is an important part of software development process. Unit tests form a core part of testing process where each functional block is tested as an independent unit.

Making a deep copy of an object in JavaScript is fairly challenging. Fortunately, there are a few ways to accomplish this without much code.

At some point you’ll want to read, set, and remove cookies using JavaScript.

Learn how to split a string into an array.

This guide will teach you how to concatenate, or join, all elements of an array into a single string.

Learn how to merge two arrays together in JavaScript.

Tabbed browsing has become the standard so modern browsers have provided a way for developers to determine if a tab has focus. This uses the HTML 5 Page Visibility API.

This guide demonstrates multiple ways to iterate over a JavaScript object’s properties and values.

There are two very similar statements in JavaScript: for…in and for…of. And while they can be easily confused, they’re actually quite different.

As a JavaScript developer, you’ll often need to construct URLs and query string parameters. One sensible way to construct query string parameters is to use a one layer object with key value pairs.

Writing tests is an important part of software development process. Unit tests form a core part of testing process where each functional block is tested as an independent unit.

Making a deep copy of an object in JavaScript is fairly challenging. Fortunately, there are a few ways to accomplish this without much code.

At some point you’ll want to read, set, and remove cookies using JavaScript.

Learn how to split a string into an array.

This guide will teach you how to concatenate, or join, all elements of an array into a single string.

Learn how to merge two arrays together in JavaScript.

Tabbed browsing has become the standard so modern browsers have provided a way for developers to determine if a tab has focus. This uses the HTML 5 Page Visibility API.

Array(16).join(“wat” – 1) + ” Batman!”;

27 guides Explore

Code is poetry — one line at a time.

68 guides Explore

All things web development.

58 guides Explore

Array(16).join(“wat” – 1) + ” Batman!”;

27 guides Explore

PRIMARY

Explore

Code is poetry — one line at a time.

68 guides Explore

Explore

All things web development.

58 guides Explore

Explore

View openings

Follow @howchoo and learn cool things:

Like what we do?

Donate

Sitemap Terms of use Privacy policy DMCA requests CA Residents: Do Not Sell My Personal Information

Want to support Howchoo? When you buy a tool or material through one of our Amazon links, we earn a small commission as an Amazon Associate.

Donate

Sitemap Terms of use Privacy policy DMCA requests CA Residents: Do Not Sell My Personal Information

Posted on December 1, 2019 by admin

Joined in 2015

217 guides

Web developer, designer, tinkerer, and beer enthusiast living in Tampa, Florida.

howchoo howchoo

Improve your overall printing experience—and quality.

Zach View

In these interests: ender3 3dprinting

The most common Creality Ender 3 questions answered!

Ash View

In these interests: ender3 3dprinting

Make your Ender 3 quieter and improve your prints with this board upgrade.

Zach View

In these interests: 3dprinting ender3

An inexpensive upgrade that greatly reduces bed leveling frequency!

An inexpensive upgrade to make your Ender 3 even better!

Update your 3D printer’s firmware and add thermal runaway protection.

You can’t print money, but you can make money printing.

Control your MK3S remotely.

See how 3D printer manufacturer, Prusa Research, is helping meet the demand for hand sanitizer by repurposing equipment.

An incredible desktop 3D printer for a great price

An interest for owners of the Ender 3, an amazing budget 3D printer from Creality. Have a specific question? Be sure to check out our Ender 3 FAQ.

11 guides Explore

Think of it like a 2D printer, but with an extra dimension.

53 guides Explore

View openings

Follow @howchoo and learn cool things:

Like what we do?

Donate

Sitemap Terms of use Privacy policy DMCA requests CA Residents: Do Not Sell My Personal Information

Want to support Howchoo? When you buy a tool or material through one of our Amazon links, we earn a small commission as an Amazon Associate.

Follow @howchoo and learn cool things:

Like what we do?

Donate

Sitemap Terms of use Privacy policy DMCA requests CA Residents: Do Not Sell My Personal Information

Want to support Howchoo? When you buy a tool or material through one of our Amazon links, we earn a small commission as an Amazon Associate.

Posted on December 1, 2019 by admin

Home Interests

Zach (217)

Total time: 20 minutes

Updated: December 1st, 2019

Are you a writer who loves 3D printing? Send us a message

Aside from upgrading your Ender 3 board, upgrading your stock PSU to a Mean Well PSU is one of the best upgrades to make your 3D printer quieter.

In this guide, I’ll show you how to upgrade your Ender 3 to the MeanWell LRS-3500-25 PSU. This is the same power supply used on the Ender 3 Pro.

Things used here

See all

Check Price

on Amazon

Why upgrade?

There are several reasons to upgrade your Ender 3’s PSU to a Mean Well:

Noise: The PSU fan only runs when needed (usually <20% of the time), meaning a much quieter printer.
Safety: MeanWell power supplies are more reliable and safer than the cheap stock unit. They use higher-quality components that provide consistent, clean power with fewer spikes and sags.
Reduce bed-leveling issues: By providing consistent power the MeanWell reduces issues with EZABL and other bed-leveling kits related to power ripples and grounding.
Compact form factor: The MeanWell PSU is noticeably thinner and more compact than the stock unit; this is especially handy if you’re using an enclosure and want to keep your setup as compact as possible.

Here’s everything you’ll need to complete this guide:

MeanWell LRS-350-24 PSU	×	1
Screwdriver, flathead	×	1
Screwdriver, Phillips	×	1
Hex key, M3	×	1

Setting MeanWell input voltage — If you forget to do this, you’re going to have a bad time.

Use a flathead screwdriver to slide the input voltage switch to either 115V or 230V, depending on your country. I’m in the US so I switched it to 115V.

You probably know which mains voltage your country uses, but if for some reason you don’t, you can reference this “Mains electricity by country” Wikipedia article.

Your MeanWell PSU probably didn’t come with a PSU cover, the bottom portion that holds the AC plug inlet and protects your terminal block from dangerous shorts (and fingers).

Since the MeanWell PSU is smaller than the stock one, the old cover won’t fit; therefore, you’ll need to print a new one. You can find tons of designs on Thingiverse, but I recommend this excellent model from TH3D Studio.

Download and print that model. I was able to print mine standing up without supports. My Ender 3 was more than capable of “bridging the gap” without stringing.

Removing the stock Ender 3 power supply unit (PSU)

Unplug your printer’s power cable and disconnect the XT60 connector that connects the PSU to your printer.

Then, use an M3 hex key to remove the two front cap screws that secure the stock PSU to your printer’s right Z-axis vertical support.

Finally, set the old PSU aside.

Transferring Ender 3 AC plug inlet — Here you can really see how much slimmer the MeanWell PSU is!

We’ll need to disassemble the old PSU and transfer the AC inlet (plug) and wiring to the new MeanWell PSU.

Remove the two M3 screws from the bottom cover. Then, use a Phillips screwdriver to remove the two inlet screws.

Take a photo of the wiring (or reference my photo in the step below). Then, unscrew each screw to remove the 5 wires from the PSU terminal block.

Finally, insert the AC plug inlet into the new PSU bottom cover and secure it using the two Phillips screws.

Wire up the PSU the same as the old one. In addition to the photo I took, here’s a handy table I made to help you with your wiring:

MeanWell PSU wiring

From	Color	To
XT60 cable	Red	+V
XT60 cable	Black	-V
AC inlet	Yellow	GND
AC inlet	Black	N
AC inlet	Red	L

Ender 3 MeanWell PSU completed assembly — On the left, my upgraded MeanWell PSU; on the right, the stock Ender 3 PSU.

Route the XT60 cable through the back opening of the MeanWell PSU cover. Slide the cover into place, and secure it using the two M3 screws you removed from the old cover.

MeanWell PSU assembly mounted on the Ender 3 — Fits like a glove!

Mount your brand-new PSU to your Ender 3’s Z-axis support using the same screws that secured the old one.

Reconnect your cables and you’re good to go! Next, check out my Ender 3 mainboard upgrade guide—an upgraded mainboard gives you better prints while making your printer eerily silent.

Ender 3 Board Upgrade Ender 3 Spring Upgrade

Show all in the Ender 3 series

View openings

Follow @howchoo and learn cool things:

Like what we do?

Donate

Sitemap Terms of use Privacy policy DMCA requests CA Residents: Do Not Sell My Personal Information

Want to support Howchoo? When you buy a tool or material through one of our Amazon links, we earn a small commission as an Amazon Associate.

Posted on December 1, 2019 by admin

Home Interests

Ash (253)

Total time: 30 minutes

Updated: December 1st, 2019

The Raspberry Pi 4 has been a hot topic since it’s release—and no one knows that better than Jeff Geerling. In a recent blog post, Jeff reveals a serious issue that’s impacting the performance of the Pi 4.

Be sure to also check out our guide on adding a Raspberry Pi fan that will turn itself on and off automatically!

Here’s everything you’ll need to complete this guide:

Raspberry Pi 4 Model B	×	1
Official Raspberry Pi 4 case	×	1
Pi-Fan Raspberry Pi fan	×	1
Hole saw bit, 1-1/8″	×	1
Cordless drill	×	1
Drill bit, 7/64″	×	1

Raspberry Pi 4 Thermal Image — Jeff used his Seek thermal imager to identify the Pi 4 heat signature.

The Raspberry Pi Foundation released an official Raspberry Pi 4 Desktop Kit. The kit comes with a new plastic case featuring holes for every port on the Pi 4, but nothing at all for ventilation. This project uses the official Raspberry Pi 4 case, though you can use any other case to accomplish this project as well.

Things used here

See all

Check Price

on PiShop

Most Raspberry Pi models don’t need fans or heatsinks for everyday use—but the Pi 4 is another story. The CPU idles around 60°C. Running heavy processes can heat the board so much it hurts to touch. Too much heat will cause the CPU to throttle, causing serious performance issues.

Jeff revealed some telling images by photographing the Pi 4 with a thermal imager. Most of the heat appears to come from the USB-C power circuitry. Since the heat has nowhere to leave inside the Pi 4 case, he decided to install a fan. Here’s a quick breakdown of the project.

The Pi-Fan is attached to the top half of the Pi case. Drill a hole in the center using a 1-1/8″ hole saw. Be sure to smooth out the edges with a file or sandpaper.

Things used here

Line the fan up with the newly drilled hole and mark the screw holes with a pen or pencil. When drilling the screw holes, you will need a 7/64″ drill bit. Smooth out the edges and remove any remaining plastic.

Things used here

See all

Check Price

on Amazon

Place the fan inside of the Pi case with the “Pi-FAN” sticker facing up. Line up the fan and screw it into place.

Connect the fan’s red wire to GPIO pin 4 (5V) and the black wire to GPIO pin 6 (ground). The fan should receive power automatically when the Pi is booted.

If you’d like your fan to only run when needed (based on Pi temperature), check out our Raspberry Pi fan controller guide.

After installing the fan, you may want to initiate a stress test to see how it’s impacting the Pi. Jeff’s observation resulted in a lower temperature that kept the Pi 4 well under its throttling point by about 20°C. You can find more details on performing a stress test in his original post. Don’t forget to check out our guide on how to measure the core temperature of your Raspberry Pi.

In this video, Jeff breaks down everything you need to add a fan to the Pi 4. Don’t forget to check out the full post on Jeff Geerling’s website!

Raspberry Pi Starter Kits Raspberry Pi Password Change

Show all in the Raspberry Pi Basics series

View openings

Follow @howchoo and learn cool things:

Like what we do?

Donate

Sitemap Terms of use Privacy policy DMCA requests CA Residents: Do Not Sell My Personal Information

Want to support Howchoo? When you buy a tool or material through one of our Amazon links, we earn a small commission as an Amazon Associate.

Posted on December 1, 2019 by admin

Home Interests

Zach (217)

Total time: 5 minutes

Updated: December 1st, 2019

Are you a writer who loves 3D printing? Send us a message

Like dark themes? Me too! This short guide will show you how to add a dark theme to your OctoPrint (or OctoPi) interface.

Here’s everything you’ll need to complete this guide:

OctoPrint

Themeify is one of the most popular OctoPrint plugins.

Open OctoPrint Settings by clicking on the wrench icon.

Then, select Plugin Manager and click Get More….

Finally, search for and install Themeify. When prompted, restart OctoPrint.

Open Settings once more and select Themeify from the sidebar.

Make sure Enable theme is checked and select Discorded or Nighttime from the Theme dropdown.

Click Save. You’re done!

OctoPrint Plugins OctoPrint Cameras

Show all in the OctoPrint series

View openings

Follow @howchoo and learn cool things:

Like what we do?

Donate

Sitemap Terms of use Privacy policy DMCA requests CA Residents: Do Not Sell My Personal Information

Want to support Howchoo? When you buy a tool or material through one of our Amazon links, we earn a small commission as an Amazon Associate.

Posted on December 1, 2019 by admin

Updated: December 1st, 2019

PRIMARY

49 guides

215 guides

37 guides

We’re hiring. Write for Howchoo

PRIMARY

49 guides

215 guides

37 guides

RetroPie: Build Your Own Raspberry Pi Retro Gaming RigHow to install (and use) RetroPie!

We’re hiring. Write for Howchoo

Joined in 2015

233 guides

Web developer, designer, tinkerer, and beer enthusiast living in Tampa, Florida.

howchoo howchoo

A lot about Lakka.

Ash View

In these interests: pi retrogaming

Everything you didn’t know about the retro gaming staple.

Ash View

In these interests: retropie pi retrogaming

Ready to game, but don’t know where to start?

Ash View

In these interests: pi retropie retrogaming

A tabletop arcade cabinet full of Pi!

N64 game won’t save? No problem

All about that bass? Let’s crank it up!

You can’t play anything like this. Let’s fix it!

You can play your Game Boy in the dark now!

You can’t play it like this!

Spoiler: Mario Party did it. Mostly.

Someone recreated the iconic first level of Super Mario Bros as a fully-playable, life-size augmented reality (AR) game in Central Park. The results are astounding.

We’ve put together a guide to help you find the best soldering iron for your next project.

For Raspberry Pi beginners who still love to follow along in a book.

Thank you Mario, but our Princess is in another castle!

49 guides Explore

The Raspberry Pi is a small, inexpensive computer developed by the Raspberry Pi Foundation in the United Kingdom.

215 guides Explore

“It takes half your life before you discover life is a do-it-yourself project.” – Napoleon Hill

37 guides Explore

Posted on December 1, 2019 by admin

Total time: 60 minutes

Updated: December 1st, 2019

Check Price

on Amazon

We’re hiring. Write for Howchoo

PRIMARY

215 guides

38 guides

10 guides

How to Update Your Raspberry PiMake sure your Pi is fresh.

We’re hiring. Write for Howchoo

Joined in 2018

298 guides

Ash is an experienced tech writer with an endless passion for technology. She enjoys retro gaming, 3D printing, and making awesome projects on the Raspberry Pi.

ashpuckettb2b

For Raspberry Pi beginners who still love to follow along in a book.

Michael View

In these interests: books retropie pi

What’s better than an experiment? An experiment in space!

Michael View

In these interests: kids pi news

Ready, Set, Race!

Ash View

In these interests: pi

Kali Linux is a great distribution for Raspberry Pi users who want to get to grips with security testing.

The Raspberry Pi micro-computer grows in power with each new model release, with more resources that make it a more capable, low-cost content server for your media and resources.

Laptops, smartphones, tablets, even lightbulbs—an endless number of devices now have the ability to connect to your local network and the wider internet.

The Raspberry Pi was designed to boot from an SD card, but in some cases, it’s convenient to boot from a USB drive.

Get the new official Raspberry Pi OS on your Pi.

New to the Raspberry Pi? Start here.

Blocking ads just got easier with Pi-hole, a network-wide ad blocker for the Raspberry Pi

Don’t skip out on a proper case for your Pi 4.

The only Raspberry Pi Bluetooth guide you’ll ever need.

Your favorite MS OS on the Pi.

The Raspberry Pi is a small, inexpensive computer developed by the Raspberry Pi Foundation in the United Kingdom.

215 guides Explore

“It takes half your life before you discover life is a do-it-yourself project.” – Napoleon Hill

38 guides Explore

10 guides Explore

JavaScript for loops

MeanWell PSU wiring

Follow @howchoo and learn cool things!

FACEBOOK

YOUTUBE

TWITTER