Unable to reply to comments

Why is it impossible for me to reply to comments on my tutorials? I tried on both firfox and google crome. Same thing.It says to ' type comment before posting' ! well i've typed...but it's not posting. Same problem even in mobile.Please help me sort it out. Thanks

Posted by shazni 3 months ago


Salt and water etching

I made an instructables about salt and water etching https://www.instructables.com/id/SALT-AND-WATER-E...as I learned it in a jewelry class, so I never tough about been unsafe. I posted it as I tough it was a nice one to share, but I'm having some comment on how it should not be safe using stainless steel in this project. As I don't have absolute knowledge about this before, and I just report what I learned, I was wondering if that was correct or not. (I know sometimes people comment very random stuff). Anybody know something about this topic?

Posted by marcellahella 3 months ago


Landline and mini speaker & microphone : can one use bluetooth mini speakers ?

Hello,Is it possible to use one of those small bluetooth speaker + microphone sold everywhere with a corded phone (cordless but wired to rj11 modem-routeur) to achieve some kind of JABRA-like system ?This is intended for me (light hearing impairement) and my parents.Of course the Bluetooth would not be used as bluetooth but as a "wired" speaker+mic to the phone base (with 3.5mm audio cable as for headset used by gamers..The idea is to get a louder volume than the handset or base of a corded phone can provide.and the problem of sound quality + cuts that arise from this mode of use (listener cans speak but with a delay ...) Please, don't answer me to buy "Jabra" or buy "amplified" dect phone.Just in case, I dream of a mini speaker not bigger than a glass o water connected with a lapel microphone (or replacing the microphone + speaker of my GIGASET handset ...)Any answer and/or suggestion would be appreciated.

Posted by InZo 3 months ago


May the Fourth - Theme 3-course dinner

Last weekend I finally watched Star Wars Episode VIII: The Last Jedi. So with May Fourth coming our way I decided I would cook a nice Star Wars themed 3-course dinner for me and my wife this Friday. The idea is just simple food, but made it looking like something linked to Star Wars. I've come up with some ideas, but more ideas are always welcome. Here's whats on the menu up to now:Appetizer - Galaxy carpaccio:Purple beetroot 'empty space' carpaccio with sesame seeds 'stars' and drops of balsamico 'black holes'Main course - Star Wars Episode IX: The Fast-Food Hero:Sweet 'C3PO'-tatoes / 'BB'-pot-'8'-oes'Han'-burger 'Solo'Grilled green asparagus 'light-sabers'Dessert - Cheese platter:May the Roquefort be with youRevenge of the SwissMozzarella Death StarBabybell star wars smileysSo what are your suggestions?

Posted by ruudcreates 3 months ago


Web Site Improvements

Thank you for adding the "More by the author" profile banner to the top of each Instructable. Three author-instructable images used to appear in the right-hand panel along with some recommendations but disappeared with the last site upgrade. The new location at the top of each instructable is a nice touch ...Thanks also for restoring the graphical "Launch Stats" ...

Posted by lingib 3 months ago


Important Changes to Contests - May 1st

Hello everyone! As most of you have probably noticed, we haven’t changed much with our contests over the last several years. But this year we’re changing that, thanks to all of you and your important feedback! In 2018, we are going to be trying new things when it comes to contests. We believe these changes will lead to a larger variety of winners and even more incredible instructables!With that said, we’d like to announce two major contest updates starting on May 1st. #1 - Every instructable can only be entered into ONE single contest.At first, this may seem like bad news, but we promise it’s actually good: the new rule will allow more authors to win prizes! We’re reducing the number of prizes ONE instructable can win, but this will allow for more winners overall. While we’re sure some of you will be disappointed, this is a great way to level the playing field and simplify the process for both authors and judges. The old contest system allowed an author to enter three contests with one instructable, which greatly increased the number of entries per contest. Along with increasing the number of entries per contest, the old system tended to pit new authors against much more experienced authors who understand that they can up their chances of becoming a finalist by working multiple contest themes into an instructable. We hope this new contest rule will encourage our authors to commit fully and enthusiastically to one contest theme and create more focused projects, instead of stressing about making something to qualify for three separate contests!.#2 - We are creating more Prize Packs.Currently, if you win a contest at any prize level you will get an Instructables prize pack, some stickers, and whatever other random swag we have lying about in our prize room. As it turns out, this has created a situation in which our best authors end up filling their homes with piles of instructables T-shirts. We recognize that winning T-shirts over and over again is boring.To make Prize Packs Great Again over the next few months, we are going to roll out new Prize Packs on a permanent and limited edition basis. When you win a contest, you will be able to select the standard T-shirt prize pack, but you will also have new choices coming soon.Make sure to keep an eye out soon for new Instructables swag we know you’ll love!

Posted by randofo 3 months ago


Why couldn't I enter in this url - http://your.raspberrypi.ip.address:5050

I need this url for making a echo. But it didn't work. Please help.

Posted by fairuj 3 months ago


What stepper motor should I buy?

I am new to stepper motors and didn't have one. Just need to make sure that I will buy the correct stepper. My project is about DSLR camera pan + tilt and for slider, so it will be 3 steppers. Maybe can carry 1.5kg - 2kgI already have the following:Battery: Laptop powerbank USB1:5V/2.1A USB2: QC2.0 port 5V/2A 9V/2A 12V/ 2ADriver: Adafruit Motor Shield V2 for ArduinoArduino: DFRduino UNO R3And some 1:40 reduction gears from past projectAbout the stepper I'm planning to order in Bangood.com and here is my choices: 12-24v, 1.8 step, 0.5 amps, 20 resistance, 1000g.cm hold, 80g.cm detent 12-24v, 1.8 step, 0.28 amps, 26 resistance, 700g.cm hold, 60g.cm detent 12v , 1.8 step, 0.4 amps, 30 resistance, 28n.cm hold, 1.6n.cm detent 12v, 1.8 step, 0.4 amps, 30 resistance, 260mN.m hold, 12mN.m detentPlease let me know what should be best for my project. I'm not expert in steppers. If you have any suggestions that would be great.Thank you!

Posted by coreuploader 3 months ago


Missing Link?

FYI,I noticed what seems to be a missing link on the one of the "How to Use the Instructables Editor" pages. The url is: https://www.instructables.com/id/How-to-Use-the-In...The missing link is in the first bullet at the bottom of the page:1) A simple guide for creating an all-around great Instructable can be found here.2) Photos are one of the most important aspects of your Instructable. This Instructable is full of helpful tips and techniques to make your photos look their best. 3) Want to get your Instructable featured? Here's a list of what we look for to keep in mind when documenting your next project! 4) A collection full of additional photography, writing, SEO and other resources can be found here!Let me know if you have any questions.

Posted by kedwards999 3 months ago


Trying to power an AR9331 router using a power supply have made

Hi, I am trying to power an AR9331 router using a power supply I have made. The AR9331 requires a 3.3V supply. My power supply takes 12V as input, then converts it into 5V using a LM2576 step down voltage regulator and then a LM1117 regulator to convert 5V to 3.3V. The output is at the desired 3.3V level and is ripple free. I have verified this using a scope. The problem is that if I use this power supply the AR9331 boots and then hangs. If I try booting the same AR9331 with a lab power supply set at 3.3 V it boots perfectly.I learned about inrush current and tried to measure it using the following setup: (see the attached 1)Since the resistor is 1 ohm the potential across it equals the current. The next figure shows the potential across the 1 ohm resistor: (see the attached 2)The inrush current is about 1A, whereas the normal operating current is 250mA. I tried two solutions, 1. Tried a current limiting resistor between my 12V lab supply and the LM2576 input. This works. The router boots perfectly. 2. Tried lowering the lab supply to 9V and connecting it to the LM2576 input. without any current limiting resistor. This also works. I suspect the problem is inrush current. Any suggestions? One interesting observation is that if I power my power supply with 9V or even down to 5.5V the router boots just fine. This has been happening repeatedly during my experiments. This is confusing me completely since the LM2576 is designed for input voltages well above 12V (see datasheet: http://www.kynix.com/uploadfiles/pdf2286/LM2576D2T-012.pdf)Thanks.

Posted by holdthedoor 3 months ago


How can I register a physical button press on a webplatform using the Feather HUZZAH with ESP8266?

I am trying to make a cube where 4 of its sides have a physical button which can be pressed. I want to be able to receive what button was pressed and when via long distance. So wherever the cube is, I can read what it sends on a webplatform of any kind.I looked into Adafruit IO, the feather boards and IFTTT automation but can't figure out how to do this still... I have a basic arduino kit already but nothing Adafruit related yet, before I buy more parts I need to make sure I know what I need and how I will make it work. So far my best research has gotten met to the Feather HUZZAH with ESP8266, but I am not skilled in coding are working with circuit boards. All I know is that it has the option for a battery so my cube can function on it's own (which is very important) So the main question is: How can I make a small portable cube with buttons on its side to send the data of those button presses to an online platform wherever it may be used?

Posted by SenneH 3 months ago


Required Power Supply for Peltier (TEC12715)

I'm going to build a Mini Airconditioner based on Peltier Module. I'm going to use 10 Peltier Module for better cooling. 1 Peltier requires Umax (V):15.4 Imax (A):15 Max power consumption (watt):231 Watt. Which Power Supply Driver is required to run all 10 Peltier Elements. [I am from Non-Electrical Background].

Posted by Karthiie keyan 3 months ago


MP3 player with USB disk input

Hi All.I use my USB flash drive to play music on my PC and in my car. My stereo at my entertainment area does not have a USB input so I have to plug a device into it via aux such as a phone or MP3 player. My question is; are there any MP3 players that have a port for a USB flash drive? I have an old phone that I currently load with music to play on my stereo when I have guests but I would prefer to simply plug my USB disk into a device to play music off of it. Its a pain to load music onto my USB, then have to load the music again onto my old phone. Thanks

Posted by Waynne-EdwardR 3 months ago


For some reason I`m not getting any more E-mail from you Guys? Please Help !

Was getting E-mail from you and it just stopped for some reason ,I signed back up Can you set me Back Up ???

Posted by MichaelB28 3 months ago


Loop Time Ardunio

I need your help with a very very short code ?i have this code#include "Keyboard.h"#include "HID.h"void setup() { Keyboard.begin(); }void loop() {delay (1000); Keyboard.write(KEY_F1);delay (3000); Keyboard.write(KEY_F2);}this code works fine for me... but the problem isthis code give me only one "F1" and one "F2" in 4 seconds. i need "F1" appears every second (1000ms) and "F2" every 3 seconds (3000ms) in a infinyte loop

Posted by AngeloB49 3 months ago


Advice needed - Desk fan / pedestal fan as wind turbine giving 5v

I've seen a few ideas online but so far no clear instructions. I want to mount a fan outside, probably on a spinning head to face the wind, then run that current through smoothing capacitors and a step down convertor to give a stable 5v output (through a usb port). The problems I anticipate are 1. keeping the electrics of the fan dry (I was thinking of mounting it in a hood / tunnel to keep the rain off) 2. the spinning head and not having cables twisting and breaking (maybe i could use the oscilating head of the fan to do this?) 3. too much power coming in and damaging the capacitors / step down convertor. Has anyone attempted a similar project and / or have any advice on this please?

Posted by oragamiunicorn 3 months ago


I want to make an object which can register button presses and sent the time being pressed to a webplatform

I am a master student in Belgium doing Communication and Multimedia Design (Interaction)For my master thesis I am trying to find a method of supporting children whose parents go through a divorce. I am trying to do this by making a physical object (cube for now) and combining it with a digital (web)interface.The main goal is to have the physical compact and portable object (a cube with buttons for now) being used by the kid and he/she being able to press a button related to a situation or emotion they may encounter (read: portable diary). So wherever he/she is, they can use the object to express what they encounter (a button related to self image, a button related to denial, ...). This input then goes to a digital platform where parents and/or a psychiatrist can look at when and what the child went through and use that info to know which problems they are and start a conversation about it in a way that the child does not have to be upfront about it.I got most of my theory figured out and went to psychologists myself to see what these processes are, the next step is to now start making a prototype. This is where I have my difficulties and hope to find some help in this great creative community. I have a bit of experience with Arduino and have access to a lab with lasercutters, 3D printing, ...So the main technical questions are as follows:Which material can I use to make a compact enduring cube?What can I use to register button presses?How can I make this object so it can be turned on and off (so buttons don't accidentaly get pressed)?What kind of buttons can I use/make?How can I integrate a indicator light for it being on or off?How can I send the data collected?How can I collect and organise the data on the digital (web)platform?And how can I make this all compact so it fits in a cube of about 6 by 6 cm?I know I may be asking a lot and I don't expect you to answer everything or do it all for me, of course I will keep doing whatever I can while this post is here. But any input/feedback is welcome here, since I just started doing this first prototype, many options and suggestions can still be implemented so if you have any knowledge of what I try to make (for example sending data over long distances OR other suggestions on what object is could be) FEEL FREE TO LET ME KNOW :DThank you in advance! I hope to hear anything at all :D

Posted by SenneH 4 months ago


Gif played after a click

Hi guys!It looks like there has been a new update on the site recently, and now we have to click on the gifs to see them.What do you think about this? Do you click on them? Or do you prefer the look at the pictures?I am wondering because I usually use a lot of gifs (sometimes 1 or more for each step), and maybe it is time to change this. So there are 3 possibilities:continue to load the gifs with the images (and click on them)replace the gifs with more images, and more detailsembed the gifs in the text, this way they automatically play once the page is open.What do you prefer?

Posted by Matlek 4 months ago


Decode Custom RF ASK Signal with Arduino & RadioHead

I have a remote that sends out a preamble, a pause and then a long code where a 0 is encoded as 100 and 1 is encoded as 110. I used an RTL-SDR to decoded the aforementioned ASK signal. I know the code is correct because I can simulate the signal using an Arduino and FS1000A. I simply connected the FS1000A's data pin to a digital pin and then I send out the signal. What I want to do is actually receiving the signal on the Arduino, i.e. which button was pressed on which remote (there are multiple remotes). For that I am using an XY-MK-5V and the Radiohead library. I used the RH_ASK driver sample code. However, it doesn't receive anything at all, meaning nothing is printed to the serial monitor.I think there are a couple of issues, i.e. it seem the Radiohead library expects a different preamble then what my remote sends and it also expects a checksum which my remote also doesn't seem to send. I haven't found a way to configure Radiohead so it can deal with my remote code. Is such a configuration possible. If not, what are the alternatives?

Posted by muludu 4 months ago


Dead Sewing Machine or Dremel Tool Motor

A woman asked me to look at her sewing machine. The motor was dead. A new foot control did nothing. A dealer seemed disinterested in looking at it for repairs, but wanted to sell her a new machine for $700+. Attached is a photo of the commutator from her machine's motor after I cleaned it up enough to run again. After 15 years of use there was so much oxidation and contamination from brushes arcing that an Ohmmeter showed infinite resistance (open circuit) across the commutator, unless readings were taken on the brighter copper colored portions of the commutator. (The brushes are still good.) Then I got reasonable readings, indicating there was actually an unbroken circuit across the armature coils. Removing shrouds and getting to the motor was the most difficult part. Then I turned the motor by hand while I held 500 grit sandpaper on the commutator until it was clean and bright. The motor runs like new again. The owner is very happy. (I made this fix as a favor, not to gain income.)I had expected something like I found in a Dremel tool that quit working. With an Ohmmeter I found a break in the circuit between the field coil and a terminal pin. (I was able to bridge the broken connection and the Dremel workes again.) Another sewing machine did not run, and the problem was found to be a bad electronic circuit board no longer available. That machine had to be replaced.But, sometimes somethng so simple as a very dirty commutator is the only problem and is easily cleaned so the machine works perfectly again.

Posted by Phil B 4 months ago


Use old ipad as always-on wall mounted family organiser/info center

Hey everyoneI was looking at a bunch of instructables today for making a Magic Mirror, and I love the idea of making one. Could be a good info hub in my kitchen potentially, but then I figured that as much as I like the idea of building one, 1) I'm a little limited on time currently, and 2) I have an iPad (3rd gen, first one that got the retina screen) that really doesn't see much use now.So I figured that might be a good starting point until I have more time to build something from scratch, specially since it's touchscreen which is ideal for adding stuff to lists or amending things etc.I'm not worried about it being a mirror, but basically I want it to meet the following (approx) criteria:1) To remain with the screen always on - (think you can just set it to never lock in settings and this would do that?)2) To ideally be widget based content, to include such things as:WeatherA family based calendar (that individual calendars on other devices can link to preferably) Reminders Imminent events (for say the next 3 things in the calendar perhaps)Shopping listNow after some searching I can see there are quite a few family organiser type apps, but having gone through a bunch of them I can't quite find anything that suits quite what I had in mind because of the following sort of issues I've encountered:App needs to be on newer version of iOS (can't update this ipad to 10 or higher - it's forever to be on 9.x)Apps don't have weather and/or aren't widget based (or pleasing to the eye)Apps are for the iPhone not iPad, so don't look great.Don't let you change the interface/layout.So I've got tired of looking for the right app for this after setting up different accounts on loads of apps then finding they're not to my liking for one reason or another, and am wondering more if there's something like a web based tool that would give this sort of customisable functionality, or something I could install on my local network (even on my nas since that can run apps & services etc (synology diskstation)) that will give a local web page that the ipad could maybe just permanently display/interact with on safari or something?Grateful to hear what people would suggest for accomplishing what I want for this project. Maybe there's an existing app that can display modular/custom content, which would be ideal since it would keep the touch screen input for stuff like shopping lists etc?I'm going to mess about with Magic Mirror anyway and see what I can do with that, but appreciate any cool suggestions on different tools to try.Thanks! :)

Posted by Mr Joshua 4 months ago


Driver for High Powered 3W, 5W LEDs

Hey folks,I am new to this LED thing.I've bought around 90 high powered 3W and 5W LEDs with different forward voltages, and I am going to power them using some LED drivers that I bought with them. After searching for a while about how the nature of LEDs are, I am not sure about how should I connect these drivers to the LEDs because the drivers are constant current type of 1500mA, and the required amperage of LEDs are 700mA. I am thinking of adding one resistor to reduce 1500ma to 700ma just after + output in the series of LEDs line, but then because the drivers are a constant current one I think the resistor might just not work as the driver may try to push the current to reach to 1500mA so then it may ruin the resistor and LEDs afterward. Well, this is my guess and I am not so sure about that, so I need help with this one. Here I bought 5pcs of the 50W type:https://www.ebay.ca/itm/162156429886Above link is the drivers that I mistakenly bought from ebay (I could buy the 700mA drivers and make my life easy, but there is no high wattage (above 100W) with low amperage (700mA) LED driver in the market for a reasonable price for an unknown reason to me, could anyone answer this too?) Also my another question is about the nature of LED drivers: Let's say there is a LED driver with a constact current of 700mA and output voltage of 30-45V and some LEDs with forward voltage of 3.7V and 700mA required current, what happens if I connect 4 LEDs to this driver? Does it ruin the LEDs for getting more voltage than required? Or it's gonna be fine because the current is constantly 700mA? I am so confused right now! Please help!I also bought some temperature switches so I could add it to my circuit so I save my LEDs in case they got so hot! Yet I am not sure where to add them! If anyone could advise me on this I really appreciate it!

Posted by gamma-rays 4 months ago


How to build a 5Kwh Power Wall using Headway 38120 LifePo4 Batteries

Frequent power cut during the summer and hours of no power issue during the monsoon makes our lives miserable. It's a common picture in rural areas where the overhead power line connection is prevalent. This led me to think about an alternative power back up that would be way better than the conventional LA or SLA battery solutions. With the constant advancement in the technology, new dimensions are being unfolded to us and I believe, the powerful Headway 38120 batteries are going to reign in the market for quite sometime. I need help from the experts to build a 5kwa Power Wall using Headway 38130 LifePo4 cells and an Inverter too. The parameters are: Output Voltage: 230v, Max Load: >500wh (I'm looking for 10hrs bkp= 5kwh), I'm clueless about how many cells I might need and how many of them will be in series and in parallel connection. Do I need a custom built charger for these LifePo4 cells and BMS too? Please help me up.

Posted by akik007 4 months ago


Convert broken metal bandsaw blades to hacksaw blades

My son-in-law had a broken metal cutting bandsaw blade. I did not want to bother trying to weld the broken blade, grind it smooth, and then try to temper it. I used a 12" hacksaw blade as a guide and drilled holes in the broken band. Cutting to length was easier than I expected. I used an ordinary tin snips. Drilling was easier than expected, too. I got three hacksaw blades from the band with a few inches of surplus.

Posted by Phil B 4 months ago


Automotive reindeer antlers

Every year at Christmas I put antlers on my car. (Don’t necessarily do the red nose... Rudolf isn’t the only reindeer...) The store-bought antlers were fine on my old Saturn, but they look too puny on the Jeep that replaced it. I’d like to make my own, but they can’t be so tall or so wide that they’re an inconvenience - or catch too much air and break (or break the windows). Any ideas on how to pursue this utterly frivolous project?

Posted by Purple Chez 4 months ago


Receive arduino midi controller notes with android

Hi, I've made a midi controller follow this:https://www.instructables.com/id/Add-MIDI-port-to-K...It works fine on my computer and all of my DAW like Cubase, Mixcraft and...But when i connect my Arduino Usb cable to my computer (Only for power cause i'm not using batteries) and my Usb to midi cable to my phone, My midi keyboard does not produce any sound, I use many different apps like Midikeyboard, Perfect piano, Midiscope, Walk band and etc... But it doesn't works...What is the mistake?Note: When i connect my midi cable to my computer the red led on the midi-to-usb cable switch On only when i play a note but when i connect it to my phone the red led always stays On! [See attached image]Note: My phone supports midi keyboard and running on android 6.0.1.Thanks.

Posted by JavadK9 4 months ago


I want some one to help me at making RC car controlled by wifi esp2866 and AVR atmega 32?

Greetings,iam mustafa,working right now as it technical support engineer for 3 years and 7 months .I have never made project for RC car or any project related to embedded systems as i was always scared and think that people who create these things are super smart and iam not smart enough .i always wish to work as embedded software engineer but i've never made a project in real life. i studied c programming and materials related with avr architecture and had many interviews but i fail always .At last interview, i'd failed and the interviewer asked me to do a project so that i get better .i decided to challenge myself and build an rc car .i asked a friend of mine to help me in project& i made a code using atmel studio IDE and simulator(proteus) to test my code..my code could move the dc motor right ,left and backward and forward till this moment on the simulator (proteus software) .After while i was sick and my friend was busy as he traveled abroad cause of his work.and iam very disappointed as i didn't finish my project .i get older and i want to make a shift career and work as an embedded software engineer but iam afraid that i won't achieve my dream . i hope this post will give me a hope to continue the path of achieving my dream careeri have bought this things: 4 DC motors 12 vwifi moduleH bridge moduleresistors and wires and breadboard===============================i hope that i find some one who is patient and keep an eye on me while i do the project .Thanks all

Posted by MustafaS72 4 months ago


Sick Axolotl

We have a white Axolotl with pink eyes .. we recently went on a weeks holiday found our Axolotl on the floor not sure how long he has been there, he was still moist and alive so put him back in his tank. He will not eat... Last night he started shedding his skin. This morning he was floating on his side and you could see pink veins all over him. I took him out of the tank and put in a Tupperware container ...Now he has started to get white patches under his mouth, on his tail and side and on his foot ... please help .... what can we do as we don't want him to die???

Posted by DeborahB122 4 months ago


Course for 3D pen

Hi,everyone:I am a teacher in primaly school in china,work as teaching 3D and arduino . Do you knowing of the course for 3D printing pen and arduino for primaly school sthdent, where can I to get it? I would like to make friends with someone who works as a maker education. if you do so,please pencil your contact method to me.Thank you!

Posted by 378621421 4 months ago


The course for 3D printing pen and arduino

Hi,everyone:I am a teacher in primaly school in china,work as teaching 3D and arduino . Do you knowing of the course for 3D printing pen and arduino for primaly school student, where can I to get it? I would like to make friends with someone who works as a maker education. if you do so,please pencil your contact method to me.Thank you!

Posted by 378621421 4 months ago


Question: Best materials to build a meter height elevator (3 floors)

I have a challenge, and that is, to build a 3 floor elevator. The main frame was built using 2mm carbon steel sheet and rivets, and painted blue. The frame, 950mm height, 250mm width. I thought of using doors (two halfs, opening to opposite sides). What I'm lacking is: • the motors to open the doors (already have one for the cabin, which is more sheet); how strong they need to be• the doors; more sheet? They will be on the main frame. And, should the doors slide on a U like tube to prevent them from woobling? or use gear racks weld to the lower part of the door? And, how would I join the doors with the motors, pulleys and belts?. I'm having stupid amounts of difficulty to view how I am to make the doors work. This will run on grafcet, already done too. Just really only need to assemble the doors and its motors.

Posted by PauloD30 4 months ago


Anybody seen ? Can anyone help ?

I know this is vague but you never know stranger things have happened on the World Wide Web I found an instructable a while ago but due to the app not updating I seem to have lost it from my favourites Can anyone or has anyone seen this Instructable for a floating bench on a Circular foot. The maker had clamped lots of bits of timber to form a ring. See pic from My vague memory sorry about my artistic skills.

Posted by P5tan 4 months ago


Car Wash with Arduino

Hello community,I'm glad to be a member of this community, and I hope I can contribute and add value to you guys. I'm planning to build a car wash from scratch using ARDUINO. Any ideas on type of motors, sensors, etc. since I'm new to programming and I took a quick course on Python and that's it. So please if you have any insights on this let me know. Thank you all

Posted by MIX l مكس 4 months ago


Gifs just run once

On the drafts I am writing, I have noticed that the gifs I add run just once when I click on "Full preview". This is the case for the gifs added in the "regular" photo frame, but not for the gifs embed in the text (they are run in infinite loops). And I have the same problem with the last Instructable I have published (https://www.instructables.com/id/Universal-Arduino...), it looks like the gifs are played once then they stop.Is that a bug? I really like to add gifs to my articles to give a better overview of the project, but if they stop after few seconds or even less, I guess no one can see them...Thanks!

Posted by Matlek 4 months ago


'Can I connect 2 TPA3118 60w Mono Module to create a Stereo Amplifier?'

This is the only amplifier I had lying around and since it was a mono amplifier, it only accepts 2 inputs. By using two boards at the same time feeding the same signal wherein the LEFT channel and GND goes to the 1st board and the RIGHT channel and same GND to the second board will it work smoothly as a stereo amplifier creating a 120w Amplifier? ~(Also, I'm using only 1 power supply to power the two boards.)

Posted by Chloe_Lemaire 4 months ago


Looking for advice on LiFePO4 car battery replacement for SLA

I'm thinking of replacing my 12V lead acid car battery with a DIY lightweight battery based on LiFePO4 cells, but before I dive in I'd like to get some advice...My plan is to use 4 sets of 2 x ANR26650M1B cells in parallel, to give 13.2V output, and high output current, and about 20Ah capacity.(These cells seem to be used in commercial lightweight car batteries, so seem like a good choice.)Now, question 1: Can I just use these 8 cells as a drop-in replacement? With, presumably, occasional balancing out of the car.I think the answer is no: while my initial research suggests that some people are using off-the-shelf LiFePO4 cells in this way, a whole lot more people write about the protection and balance electronics they're using, and I don't suppose they're all wasting their time.Question 2: If Q1 = "No", would adding a balancing and protection module enable the cells to work safely in the car? There are 100A and 200A 4s modules available, so they should be OK with starting current (c. 120A in my case). I guess it's a question of whether it's OK to have such a protected battery pack constantly hooked up to c. +14.4V from the alternator, or whether I need to limit the time that the battery is charged from the alternator.Question 3: is it smarter to use super capacitors plus lifepo4 cells, to enable higher starting current while keeping battery discharging current low? (I started out thinking of combining an RC LiFePO4 battery pack with 6x400F super capacitors, but realised that I could get enough current with the ANR26650M1B cells, and fewer components should mean less to go wrong)

Posted by PaulI48 4 months ago



Suggestion - Allow us to edit/submit "Rich Snippets" meta-description in search engine results

Rich snippets are "the term used to describe structured data markup that site operators can add to their existing HTML, which in turn allow search engines to better understand what information is contained on each web page". In plain English, it's what you see when you search for something in google. While it might not necessarily help with SEO all the time, it does help any potential viewer know what the link is about, and whether it's worth clicking on. While the subject can be a bit more complex, all I'm referring to here is the meta-description. Currently, the meta-description seems to be, by default, the first ~300 characters of the Instructable (or auto-generated by Google). If you write any sort of intro, it probably won't be relevant to help understand the project at all (out of context). Suggestion - It would be great to allow users to submit a meta-description via a simple text box, perhaps on the "Instructable Preview" window where the Cover Image can be changed. If they want they can submit a 50-300 character meta-description that better explains what the whole guide is about, or if not they can leave it blank for it to auto-generate as is already the case.Being familiar with WordPress, this would be a trivial plugin. I'm sure a site as big as Instructables can see the potential benefits (increased click-throughs, reduced bounce rates...), while also knowing that it wouldn't be intrusive to users or particularly hard to implement.Just wanted to give my opinion. Like in the attached image, it can be a bit frustrating to have no control over the meta-description since it isn't always representative of the project. In the case above where it was auto-generated by Google, it doesn't give any incentive at all to click since it doesn't make much sense as a description of the project.

Posted by MillennialDIYer 4 months ago


Pin-pointer metal detector front end not working.

Hi,I breadboarded the pin-pointer metal detector and am having trouble with the front end. pcounterA reads 11-14 on the serial port monitor.See previous question on instructibles reproduced below:_________________Asked by jont4e 2 days ago Hi, I bread-boarded your circuit for just the end coils to start, and loaded the sketch. It seems to be pulsing the coil OK but the leds aren't responding nor the buzzer. I uncommented the serial port code and it shows ledthreshold1 always at .97, pcounterA at 12, and calav1 at 81. Is this OK? (The other reported variables are always 1000.) I wound the end coils with some bifilar wire I reclaimed from a microwave HV supply transformer. I assumed that was OK? Do you have a flow chart or description of how the code works so I can troubleshoot? Any help or hints would be greatly appreciated. Jon T 0 Answer from TechKiwi... 2 days ago The pcounterA value should be much higher 200 to 800 at least. My advice is to focus on one channel. Try reversing the polarity of one of the coils as this often is the problem as the pulseIn function needs to have a clean leading edge to trigger the timing process. Ensure your breadboard connections to the coil are short and well grounded. If this does not work direct message me with a link to some photos of your setup and I will try to assist. I'm just building a second unit so your timing is fortuitous as I can provide some test measurements._______________________________Attached are images of the front end scope traces and a shot of the breadboard. Coils are off screen to the left.Swapping coil polarity did not seem to change any waveforms.Hope someone has some suggestions I can try.JT

Posted by jont4e 4 months ago


Delete Drafts of the Design Challenges?

I still have some drafts form a design challenge that I can't delete. Is there a way by now? The problem was first reported here:https://www.instructables.com/topics/How-to-delete...

Posted by BrittLiv 4 months ago


A hot box full of Satan!!!

I'm already preparing for Halloween. One of the props I would like to build is a box to hold "Satan." I'm not yet sure what I want it to look like (rock? metal?)... but I do know that I want it to be warm to the touch. Not HOT... nothing that would actually harm anyone... but obviously - and devilishly - warm. My first best thought is to take something like an old-school metal lunchbox, create false walls on the top and bottom, and then put SOMETHING in the in-between spot. But what? Chemical hand warmers? Something battery-operated. Your ideas are welcomed. And if a little bit of smoke could come out, all the better. Please shout if you need any clarification!!! Thanks!!!

Posted by Purple Chez 4 months ago


"Bug" - Issue with image importer converting .PNG files to .JPEG

Update: posting this topic further illustrated that something weird is happening with how Instructables handles images. The image as shown above shows both left and right sides with the text blurry. If you click on the image, the left stays blurry (as it should because it was) whereas the text on the right shows clear and sharp. I give up on the root of the problem, but it's frustrating how the image quality gets messed up.I put "bug" in quotations since you never know if it's a bug, unintended side effect, technical limitation or external problem. I'll let Instructables be the judge. Regardless, I thought it might be worth bringing attention to since I'm probably not the only one to have experienced it.While I use RAW images converted to JPEGs in Lightroom for my main project images, which tend to look beautifully, I normally use Canva to design my title images. Mainly due to being able to add text, shapes or any other elements in layers. Canva exports by default in .PNG format, which is probably the most popular image format after .JPG due to its support of transparencies and lossless compression. For that reason it's normally preferred for header images and graphics. I tend to use a ratio of between 4:3 and 16:9 to make things easier for the file uploader, as well as a longest edge of 1024px since that looks like it's what Instructables wants so it won't be resized. Despite trying to make things easy for the uploader, my title images have always been the blurriest, noticeably more so than the rest of the images or the image uploaded. Today I finally did some tests and found out that on import of .PNG files, the uploader noticeably deteriorates the quality of the image when converting it to JPEG, even if it isn't resizing it. A picture is attached as evidence. It seems to particularly affect portions which are highly saturated or text, greatly desharpening it. It makes a good image look like it's been carelessly edited. For the image to maintain its quality, I have to take the original .PNG and convert to .JPEG on my own (Photoshop), and then upload the .JPEG to Instructables (instead of the .PNG). As a user, what I'd optimally like to see done is: Fix the importer to properly support .PNG images without deteriorating the images. It is way too popular a format to not accept. I do realize it might be a Canva color space or other such issue, but it probably wouldn't be limited to that program anyway. Nonetheless, if this isn't possible, I'd be happy for the system to simply not accept .PNG and to throw-out an error message telling me to convert the images on my own and only upload .JPG. That would at least avoid image quality being inadvertently affected. Make available an up to date FAQ page where all information regarding images is available: what formats are natively accepted, what is the optimal ratio for images, what is the optimal resolution for images, to what sizes an image is resized on import, or any other relevant technical image details. I've researched this multiple times in the past and there are a lot of people with the same questions in the forum. Especially when it comes to sizes and ratios (cut off images, etc). Most of the information is from years ago (ex. 2010) and cannot be trusted to be up to date. Up to now I've uploaded plenty of 18 megapixel images when it is unnecessary given that the largest size shown, I think, is "LARGE" size at 1024px (I believe). A place to educate ourselves objectively on this particular site's preferences would be appreciated.Anyway, thought I'd comment this since it was a relief to finally find out the origin of the problem.

Posted by MillennialDIYer 4 months ago


Bug: Closing time contests incorrect

The closing countdown is incorrect, because it looks at the local time, instead of the actuall time that the event closes.It doesn' t take into account the time zone

Posted by FriedZombie 4 months ago


Facebook - some things to consider before making full use of it....

As "A last Hurray" so to say I will do it one last time....What am I doing exactly you wonder and why do I bother writing it here?I will write a little story that is spiked with some information that I deem to be worthy to share.And I do bother to show my friends, followers and those who care what might have been a weekly or even daily thing otherwise :)At work recent changes and ongoing problems with our IT systems required that those who need contact with those in charge or above to sign up with Facebook.I tried what I could but Emails appearently don't always show if someone actually ready them and it was down to keeping my job or refusing Facebook.And yes, I tried to raise my concerns about privacy and control of it through the company...Anyway, let us start, shall we?Signing up for Facebook is as easy as asking Google for the name and to follow the obvious links.But those who know me can confirm that I take privacy seriously and that I like to question why someone thinks they need certain information.Which brings me to the point....Anyone these days is on Facebook with one or more accounts - this includes your boss, manager or anyone interested in your name, resume or other background info.Facebook provides just that, the chat and messages are as obsolete as anything else in terms of actually giving you privacy of any kind.When I signed up and was dumb enough to use a well known Email provider for my account details, I was shocked by the following offer.I was asked for my Email password to make signing in and finding friends easier!A quick but endlessly long search through the terms and conditions confirmed that indeed everyone in my contact list would be mis-used for data collecting and referencing - including the content of my Emails.Of course I had to reject this great function several times until Facebook got the massage that I like to keep control over my Email account.Thinking this was already enough for the day I rejected images and other private info, like where I was born, where I worked and such before signing off.Next day I suddenly had a list of friends as long as the shopping list of a childcare centre for thanks giving.At first I though I don't know any of them until I started to do what Facebook wants and looked the people up.Most where contacts I had on long dead messengers like the Yahoo! messenger.You can understand my confusion until I realised I had used the same Emal account for those messengers.Facebook simply reference their records of dead systems with my Email address and was happy to provide friends I really tried to avoid....The hardest hit however was when I realised that even contact backups I did from my mobile, using Google services, appeared.Thankfully most as possible friends but some directly added to my friends list, due to other links they found in their databases.Needless to say that even several of my skype contacts showed up...The last thing that confirmed why I avoided Facebook was the simple fact that all privacy options in the profile are set by default to public!Of course, if you don't mind stripping down your privacy to the entire world while Facebook is using the data for not always legal purposes you shall be fine.But if you only care a little then check the following, hopefully before stripping down:1. Never, ever type your Email password into anything coming from Facebook - no matter what reasons they claim!2. Before you complete your profile with address, phone number or similar, type in nonsense so you can get access to your account settings.After all Facebook does not bother to offer you privacy before you finnish your details and keeps nagging about adding more so they get the vital data they need first....3. Check all account settings in regards who has access!Unless you really want to strip down noone but your friends should have any access to anything.And even for that you should make sure to enable the function to review them before you allow them to show up on your page, history or elsewhere.Things to always keep in mind:1. Your account is not yours as Facebook has all rights to it, you can not even request to have your informations deleted from their databases or remove your account for good.2. Anything your friends see on your page or profile they can share, like or comment on.This means that even if don't like it, it can spread through the community within seconds and as a worst case ruin your life.3. Anything Facebook does or offers, like games, recommendations, things you should know about, have only one goal: To gather more information about you.Like for example using your Google cookies to find out what search for on the web or watch on Youtube....4. Things you like attract more things you might like, again mostly to gather more info about you, your personality, preferences and your friends.Ok, I know!You are using FB for years, have tons of friends there and keep updated about every minute of their life they share...So there is little to no chance to see what I am talking about LOLBut I would not post all this openly without a backup plan ;)If you really dare to challenge me on this then you might have to waste several hours of your precious time, but I think it is worth your time!This is how the game is played:1. Find someone older who does have a vital Email life of sorts but so far no use for Facebook.2. Ask kindly for his support on a test with Facebook that might require him to forawrd correspnding Emails to your account.3. Clearly state that neither his email or FB account will be used to post anything, add friends manually or give out any info the person does not feel confortable to share.4. Point out the possible benefits of having FB with the option to use the persons real name so he can continue using FB after the test if considered a good thing to have.5. If you manage the above successfully then only use the provided name, email and residential address to create a new account.6. Observe and wonder about the things to come.....You will notice that usually quite soon possible friends or persons that could be connected show up.Also that FB will continue to ask about the history, like schools, work, places.If you do an online search on the name often takes less than a week to get a hit refering to FB.The more info about the person you offer FB (with consent!!) the more people will show up to be considered.At this stage and I guess in less than two weeks time after creating the account comes the question about how to continue.Show the person what and who is already present in the created account and if there is an interest to keep the acount for personal use.If so, kindly ask the person to add a friend or more, fill out more details, provide a picture and so on.Hand over full control to the account either by asking the person to change the password and not let you see or know it.Again, ask kindly to get some future updates, screenshot or similar to see how the account evolve, or add yourself as a friend and keep track that way.I do not suggest in any way to create an account without consent!This includes all activities that might seem harmless:Don't use the identity of someone you "found somewhere"!Don't create a fake account, especially not in the name of someone popular or someone that might be harmed in any way by your creation - the person might have good reasons not to appear on FB!If you don't have Facebook already feel free to use to do the test with your own details!Never, ever use pictures that are not your own or that you don't have the explicit permission to use even if you took them!

Posted by Downunder35m 4 months ago


Help us help others.

In the new format, it is pretty tough to find actual questions. We get actual questions and topics mixed together with things like:"Kindly Could you please mail me the schematic?Thank you for sending" This is addressed solely to the author of a specific -ible. It's a lot of fun to help those people who dont know where to start on their project. But it is almost impossible to find those in the sea of responses to specific -ibles.Please consider fixing this so we can help folks who dont know "how to"thx

Posted by Toga_Dan 4 months ago


How can I join two pieces of cedar to make a work bench?

I have two pieces of 2x10 S1SE2 cedar that I want to join to make the top of a work bench. I'm assuming I'll have to cut off one side of each board so I can either do a butt joint or a miter joint, but I wondering about if those joints will be strong enough to hold up without any other supports. Perhaps a biscuit joint would provide more?

Posted by HannahC94 4 months ago


Need help with DIY LED GROW LIGHT

Hello people, i have never made led light before. i bought 3w led chips from ebay. 3 colors. red, deep red and royal blue. also bought led drivers 100w. i wired led-s by google)) and twhen connected this driver they dont turn on . i tried 1 led and of course it burned on this driver but when trying more leds it doesnt light up at all. what is the problem? can anybody help me? thank you

Posted by GiorgiM15 4 months ago


Good bye my friends and subscribers

Due the still ongoing problems with the last site update I decided to extend my "holidays" from this website.Those who know me will also know that I always tried to asnwer questions to my projects quickly.Same for all those seeking help in the community forum but I am simply not willing to waste more time searching and fixing than actually answering.If things here change back to a usable forum and once user requests are at least considered by Autodesk feel free to ask me to come back.Until then I will have to find other things to do with my time.In the meantime I might still check on questions to my Instructables but not on a regular base.

Posted by Downunder35m 4 months ago


Adding more servo on SSC 32u

Hi there I want to build a humanoid. But the bot will need more than 50 servos. I have two lynxmotion SSC 32u. How can I operate those two board in one commad bar???? Plz help me.!!! Chamok C.

Posted by ChamokC 4 months ago


2 months delay in discussion notifications

My "Discussions" tab showed no changes for about two months, and then yesterday it dumped about two months of replies that people had made on my various comments I made on the forums here. I think that qualifies as a bug. I mean, ideally my "Discussions" tab would notifiy me of replies in a matter of hours, so I could reply to those replies in a timely fashion, if it was the sort of thing where someone was expecting a reply from me.I am guessing this problem was maybe related to the recent big "improvements" to the site, to make it more readable for mobile lusers, and other changes to make the site more comment-able, question-able, tip-able, by everyone.Just wondering: Has anyone else experienced this same problem, i.e. a several weeks, or months, delay in notifications of replies to your comments?

Posted by Jack A Lopez 4 months ago