Satellite to Radio to Pneumatic Valve

I want to receive some sort of satellite signal with a radio and then use the data I receive to control a pneumatic system to replicate a heart beating. I have been talking around with some people who know a bit about radios and the such but haven't gotten much conclusive help.  I would like to build as much of this as I can myself, the entire radio and everything, though I only have about a month to do it. A DIY radio kit paired with an Arduino might be the answer due to time restraints.  What i've learned so far is that I probably want it to be a tunable AM radio. Whether or not I should build that myself from scratch, build a DIY kit, or just purchase one, I am not sure. How to then interface that into a system to then control a pneumatic system, I have no idea other than the obvious arduino. Lastly, I don't need any special signal from the satellite. I really just need to receive a voltage from the radio. Though, hooking into a satellite with an onboard atomic clock so that i can then display the time as well would be great. I am going to keep doing research, though if anyone here can lend a helping hand I would be very appreciative!

Topic by dlandry2   |  last reply


borked sort by most recent

https://www.instructables.com/tag/type-id/?sort=RECENT it just doesn't sort properly today. first page, i am getting re within the first page, I am getting results from 2008 and 2015. currently on windows 10, having the issue in both chrome(ver 45 .something) and MS edge i think the "posted on date" database server may need a reboot. :-) 

Topic by ironsmiter   |  last reply


Hitachi VM-CP10ZA Light Lamp DC 9V 10W

Has any one tried to connect these lights directly to a 9V DC source?

Topic by cbaladeh   |  last reply


Typo on How to Help Out page

On this page here, you have a typo in your own name! Spell check! https://www.instructables.com/community/How-to-Help-Out-Around-Instructables/ Help Authors with their Instrucables Think you know what makes a good Instructable? You can share your insight and help authors make their work the best it can be by offering support in The Clinic.

Topic by sophsterm   |  last reply


Problems copy/pasting arduino sketch code into my instructable

Hi there, as I type this in the text box, I see  a source button at the far right of the formatting line, but when I edit my instructable I dont have this option, I have a much more basic range of options. I have recently upgraded to pro membership and was wondering if I need to do something  to get this option to have nicely formatted source code in my instructable

Topic by break_it_fix_it   |  last reply


Nylon and substitutes on a cold bed

It's been some time and I made progress with Nylon. Aldi had some cheap craft glue with methanol as the solvent - this stuff works great for PLA, ABS AND Nylon. The common problem with nylon is that it has no real adhesion to anything, except cardboard and bakelite. Cardboard makes a clean up nightmare and bakelite is not always easy to find, especially not the right type. So I tried various glues, paints and primers but none was really suited for all printing needs. And the cleanup of the bed is imoprtant too as I did not want to spend hours scrubbing with acetone or similar nasty solvents. After the first great succes with the clear Aldi craft glue I checked the local 2$ shops and carft stores and found similar glueswith methanol as a solvent. Since not everyone is lucky enough to get these specials I will tell you what to look out for if you try clear craft glue: Don't buy anything that can be cleaned up with water - you want methanol or ethanol as the solvent in the glue! Do a test with the glue on something that usually does not bind well to cheap glue, like glass and blister packs. Let the glue dry and peel it off - it should be a clear film that is quite strong and barely streches when you pull it. It almost feels like hard paper. All good so far? Check if the nylon, pla or abs really sticks to it: Spread a very thin layer on a piece of cardboard and let dry. Add another, thicker layer and let dry again. Now hold it under your nozzle and extrude a bit of filament while moving the cardboard around. Let cool and check how good it sticks. In a perfect world the cool plastic should peel the papaer off with the glue. Time to prepare your print bed the same way and to start printing ;) Just use a very thin first layer and for the first layer much lower speeds than usual. I print nylon with 60mm/s and the first layer at just 25mm/s, any faster and the first layer does not look right. ABS and PLA are much more forgiving here.

Topic by Downunder35m 


Help me make a sturdy desk organizer box from 8mm MDF wood.

I'm trying to organize the bar area in my restaurant. I'm thinking of an front open box with a couple of dividers for temporary papers, notebooks pens and a compartment for beer and wine openers and such.. This is the waiters (currently just me the owner) places orders on the computer. I want to minimize the space taken from the bar so I'd like to use thin wood like this leftover 8mm MDF piece I have. I thought of cutting the sides to required sizes and then gluing them together but I'm not sure that would be strong enough to hold the approximately 5kg screen on top. It's a touch screen, so for safety I want it to hold a maximum of 8kg. TL;DR Any suggestions? How do I join pieces to make something like this

Topic by naim   |  last reply


Wireless charging of smartphones anywhere within a 30 foot radius, without-pad !

Just read there is a 10W transmitter IC that has been developed to power a receiver IC collecting 6W of that energy... Both are ASIC chips that can operate and power power mobile devices up to 30 feet apart. Even though the RF energy is deemed safe. I would plan on using a Faraday helmet and maybe lead under wear when next I visit a coffey house.

Topic by iceng   |  last reply


Night light

Hi all, I'm newcomer to this "club", and am looking for some help, please. I'm looking for details of how to make a night light, with a rotating element with designs (people, animals, trees, plants etc) either cut out of it, or painted on it. The rotating element is powered by the warm air coming off the top of the globe. The rotating element should be able to be "dropped into" position. Sorry I have nothing further at this stage!! Peter Smith

Topic by peteras1   |  last reply


Intel Internet of Things Giveaway

**EDIT! GOOD NEWS! WE HAVE EXTENDED THE PROJECT SUBMISSION DEADLINE TO 2/14!!** Here at Instructables, we have seen some really great Internet of Things projects published recently. We are elated to have a partner like Intel to celebrate the innovative creativity that the Instructables.com community shares. We’ve teamed up to showcase some of the best IoT content on our site, and highlight the projects being made with Intel’s awesome Edison board and ecosystem.   To further develop awesome IoT projects being shared to Instructables, we are giving away FREE Intel Edison Boards and IoT Development kits to you! The Instructables Community! We believe in your awesome creative potential, and your devotion to share what you make with other makers and tinkerers. The IoT revolution is here, and the world around us has never been more interactive. This giveaway is limited to 250 folks that sign up — limit one board and kit per address. Once you’ve received your board, and developed a project with it, publish it to Instructables to receive a $50 gift card to SparkFun or AdaFruit. Instructables Authors CAN SUBMIT MORE THAN ONE PROJECT using the Edison Starter Kit, and receive a $50 gift card for each project SUBMITTED! Simply publish your Instructable to the site, send us a link to your Instructable by January 31st, 2015, FEBRUARY 14, 2015!!! and we will add it to the IoT hub and send you your $50 gift card. ****EDIT: REGISTRATION IS NOW CLOSED**** INTERESTED? To participate, enter your mailing address into this form, and we will let you know if you’ve been selected to receive a IoT Development Kit. Use this forum topic as a way to reach back out to us, and talk about what you’re making! Can’t wait to see what you make! -audreyObscura

Topic by audreyobscura   |  last reply


mirror ball for panoramic imaging

Hello everybody,i am complete new to this site, but i have seen lots of interesting stuff!maybe someone here can help me...i want to take panoramic images using a shot of a mirrorball. it is a simple technique, still very effictive. but: where, or how can i get a real perfect mirrorball? it has to have a perfect surface...you can buy steel-balls, or christmas-decoration, but none of these is good enough. it should have the surface quality of an photographic lens.my idea: buying a "cheap" glass-ball and somehow turning it to a mirror. but how can i do this?any ideas?If you are interested in the technique of panoramashooting using a mirrirball check this site: http://www.clickheredesign.com.au/cubicconverter/tutorials/converting-mirrorball.htmljan

Topic by janto   |  last reply


New DLP Printer with the LARGEST build volume on the market

Hey Guys, We are now kindly inviting everyone to finish a survey for us. We are now developing the next generation of our DLP 3D printer, and we really need to gather some opinions before it hits Kickstarter. It will be a DLP printer with the largest build volume on the market, and it will provide the best solution to SME, MakerSpace and personal users. There will be only 8 questions, and every member will be notified before we launched to make sure that every one gets the Early Bird reward if you are interested(remember to submit to our newsletter). You can find detailed information including tech specs and test prints by visiting our demo website(which is free, and will be reconstructed later): http://futuremake3d.wix.com/rocko3d Demo videos are coming soon, please stay tuned. The survey is on the "More" page, so help us get some feedback. Thanks!

Topic by Waterrobertie 


Use a 3d printer for etching PCBs?

Here's an idea - would it be possible to use a 3D printer to lay out the etch resist on a PCB?  It would likely only need to print a single layer.  Of course you'd need to use a material that would resist the ferric chloride but could also be removed without leaving a residue. Thoughts???

Topic by jeff-o   |  last reply


Help for realising a linefollower tankbot

Hello, I want to realize a linefollowing tank bot. I got this following parts: - Arduino Mega 2560 - Arduino MotorShield Rev03 - Pololu QTR-8RC Array - Pololu RP5 Tankchassis (6V DC Motors) Now all parts are together and the code must be completed. Therefore I found a really nice PID-based tutorial for linefollower: http://letsmakerobots.com/blog/enigmerald/pid-tutorials-line-following I create a program, but after calibrating the sensors, the bot doesn't drive on the line. It makes no sense were it drives. Most time it do 90° turns and so on. Do you find a better solution for my code? [code] #include #include   /////////////////////////// // define constants   // /////////////////////////// #define AUTO_CALIB  false      // Autokalibrierung aktivieren #define DEBUG_ENABLE   true               // false=keine Serial Ausgaben #define NUM_SENSORS    8                  // Anzahl der verwendeten Sensoren #define TIMEOUT        2500               // waits for 2500 microseconds for sensor outputs to go low #define EMITTER_PIN    QTR_NO_EMITTER_PIN         // Default: kein Emitterpin definiert #define MOTOR_SPEED    100               // PWM Signal 0-255 (Basismotorgeschwindigkeit) #define MOTOR_MAX_SPEED 255       // PWM Signal für Maximalgeschwindigkeit #define KP     0.2                    // KP-Wert für PID Regler #define KD     5                     // KD-Wert für PID Regler ( Beachte: Kp < Kd) #define SERVO_PIN1  11       // PWM Ausgang für Servo1 #define SERVO_PIN2  12       // PWM Ausgang für Servo2 #define CALIB_LED   13       // LED Ausgang für Kalibrierungsphase ////////////////////////// // define variables     // ////////////////////////// // Zuweisung der Sensoren 0-7 an die digitalen IO's 22-29 QTRSensorsRC qtrrc((unsigned char[]) {22, 23, 24, 25, 26, 27, 28, 29}, NUM_SENSORS, TIMEOUT, EMITTER_PIN); unsigned int sensorValues[NUM_SENSORS]; int MotorLeftSpeed=3;                  // PWM pin for speed control left int MotorRightSpeed=11;                // PWM pin for speed control right int MotorLeftDirection=12;            // digital pin for direction control left int MotorRightDirection=13;            // digital pin for direction control right int MotorLeftBrake=9;                  // digital pin for brake control left int MotorRightBrake=8;                 // digital pin for brake control right int lastError = 0; ///////////////////// // Initialisierung // ///////////////////// void setup() {     // Initialisierung verschiedner IOs   pinMode(CALIB_LED, OUTPUT);    // Definiert LED Ausgang für Kalibierungsphase       // Initialisierung linker Motor   pinMode(MotorLeftDirection, OUTPUT);      // Definiert Ausgang für den linken Motor   pinMode(MotorLeftBrake, OUTPUT);          // Definiert Bremse für den linken Motor   pinMode(MotorLeftSpeed, OUTPUT);   // Definiert Geschwindigkeitsausgang für linken Motor   // Initialisierung rechter Motor   pinMode(MotorRightDirection, OUTPUT);     // Definiert Ausgang für den rechten Motor   pinMode(MotorRightBrake, OUTPUT);         // Definiert Bremse für den rechten Motor     // Initialisierung Servo Motoren   servo1.attach(SERVO_PIN1);     // Zuweisung PWM PIN für Servo1   servo2.attach(SERVO_PIN2);     // Zuweisung PWM PIN für Servo2   if (DEBUG_ENABLE)   {    Serial.begin(9600);    Serial.print("Debug Modus aktiviert:\n");     }     delay(500);     digitalWrite(CALIB_LED, HIGH);    // turn on Arduino's LED to indicate we are in calibration mode   for (int i = 0; i < 400; i++)   // make the calibration take about 10 seconds   {     qtrrc.calibrate();           // reads all sensors 10 times at 2500 us per read (i.e. ~25 ms per call)   } delay(20);      // The 20 ms delay in the calibration code is intended to make the routine take a reasonable amount of time.     digitalWrite(CALIB_LED, LOW);     // turn off Arduino's LED to indicate we are through with calibration       if (DEBUG_ENABLE)    {    // print the calibration minimum values measured when emitters were on       for (int i = 0; i < NUM_SENSORS; i++)    {   Serial.print(qtrrc.calibratedMinimumOn[i]);   Serial.print(' ');    }    Serial.println();       // print the calibration maximum values measured when emitters were on    for (int i = 0; i < NUM_SENSORS; i++)    {   Serial.print(qtrrc.calibratedMaximumOn[i]);   Serial.print(' ');    }    Serial.println();    Serial.println();   }   delay(1000);   } /////////////////// // Main Program  // /////////////////// void loop() {   // read calibrated sensor values and obtain a measure of the line position from 0 to 5000 // To get raw sensor values, call: // qtrrc.read(sensorValues); instead of unsigned int position = qtrrc.readLine(sensorValues); // Variable positon zeigt die genaue Position (0-7000) an   unsigned int position = qtrrc.readLine(sensorValues); // get calibrated readings along with the line position, refer to the QTR Sensors Arduino Library for more details on line position. int error = position - 3500;  // 3500 is the desired position   if (DEBUG_ENABLE)   {    // print the sensor values as numbers from 0 to 1000, where 0 means maximum reflectance and    // 1000 means minimum reflectance, followed by the line position    for (unsigned char i = 0; i < NUM_SENSORS; i++)    {     Serial.print(sensorValues[i]);     Serial.print('\t');    }    Serial.print(position);    // comment this line out if you are using raw values   } int motorSpeed = KP * error + KD * (error - lastError); lastError = error; int rightMotorSpeed = MOTOR_SPEED + motorSpeed; int leftMotorSpeed  = MOTOR_SPEED - motorSpeed;     if (rightMotorSpeed > MOTOR_MAX_SPEED ) rightMotorSpeed = MOTOR_MAX_SPEED;    // Verhindert dass die Maximalgeschwindigkeit überschritten wird if (leftMotorSpeed > MOTOR_MAX_SPEED ) leftMotorSpeed  = MOTOR_MAX_SPEED;    // Verhindert dass die Maximalgeschwindigkeit überschritten wird if (rightMotorSpeed < 0) rightMotorSpeed  = 0;          // Verhindert einen negativen Geschwindigkeitswert if (leftMotorSpeed < 0) leftMotorSpeed   = 0;          // Verhindert einen negativen Geschwindigkeitswert   {   // Ansteuerung der Motoren durch PID Berechnung   digitalWrite(MotorRightBrake, LOW);     // Motorbremse rechts deaktivieren   digitalWrite(MotorLeftBrake, LOW);     // Motorbremse links deaktivieren   digitalWrite(MotorRightDirection, HIGH);   // Motor rechts im Uhrzeigersinn  --> fährt vorwärts   digitalWrite(MotorLeftDirection, LOW);    // Motor links gegen den Uhrzeigersinn  --> fährt vorwärts   analogWrite(MotorRightSpeed, rightMotorSpeed);  // Motorgeschwindigkeit rechts in Abhängigkeit des PID Reglers   analogWrite(MotorLeftSpeed, leftMotorSpeed);  // Motorgeschwindigkeit links in Abhängigkeit des PID Reglers }           } [/code]

Topic by julianpe   |  last reply


Pro Membership

Anyone who wants it.  Its a 3 month membership.  code: suppose96honor

Topic by DoStuffRight   |  last reply


feature comment button is gone

On my latest i'ble I noticed that the "feature comment" button is gone! 

Topic by bravoechonovember1   |  last reply


"Feature Comment" Not Working

For over a month now, I can't feature a comment that someone posted on my Instructable, Am I the only one that has this problem? No, I've seen someone feature one of my comments before, Anything wrong with my computer? I am a PRO-member so it definitely has nothing to do with that... WHY?!?

Topic by Yonatan24   |  last reply


Multiple comments posted to Instructable

I am seeing that multiple copies of the same comment are being posted to my instructable.  This seems to be a newer bug happening over the last few weeks.  It is only occurring for some posters.   https://www.instructables.com/you/?show=COMMENTS For example, user jacobv10 and usmang6 each posted the same comment 3 times.

Topic by ihart   |  last reply


Addicted to Instructables

Why is Instructables so damn perfect??  Yes, I believe I am addicted to Instructables lol...after all it's very easy to get addicted to it. Especially for someone like me, who loves to create, this is a dream website! :D  Thanks to this site my creativity is finally challenged and it's so good to see so many people with my same passion. During these months I have been able to create more things than all the ones I had done in my life! And it feels so good. The last few years have been hard but now I feel alive again. Thank you Instructables! :) I love this community and one of my new dreams is to actually work for this website...the coolest job with the coolest people! :)

Topic by lindarose92   |  last reply


Can Hardwood Shred ABS?

I am thinking of making a prototype plastic crusher/shredder out of a hardwood instead of steel. Do you think that a hardwood would be able to grind a plastic such as abs into small pellets? If so what kind of wood would be best? What if I made a plywood out of hardwood to strengthen the grain? What if I just use nice plywood?

Topic by rednax718   |  last reply


electrical

Why does an AC of 1.5 Ton with 1 to 5 Star rating differ in power consumption though they all have the same compressor. I fail to understand how a 1 Star AC consumes more current than a 5 star rated AC?

Topic by Dipankar   |  last reply


New puppy!

I haven't been around too much lately due to some family events. Our beloved dog Roxy passed away after 14 years and that was pretty hard to take, even when we had been preparing ourselves for it for a few months. Roxy was quick to make friends, everyone loved her and she loved everyone back unconditionally (unless you are a squirrel.) A truly wonderful friend and companion. We knew after Roxy was gone we wouldn't last long before another dog entered our lives and she came in the form of a Golden Retriever pup we named Daisy. She's absolutely wonderful and I'm sure she will be making guest appearances in my future Instructables!

Topic by Honus   |  last reply


Inbox and YOU page

Not sure if I am alone with the problem or if noone else noticed: On my YOU page I relaod and change the tabs as much as I like - It keeps stating my inbox is empty. Only if I actually go to my inbox I can see my Email was right and there is another PM for me. Would be nice if the Inbox links on the YOU page could reflect that instead of constantly showing zero.

Topic by Downunder35m   |  last reply


Raspberry Pi PC temp checker

Hello forum, I'm planning on buying a raspberry Pi this week. I know a couple programming languages, but only the basics. I've had this idea for quite a while: Connect multiple thermal sensors to the Pi, and then connect the Pi to my old Android cellphone (Nexus 2), and mount the phone to my PC case, so I get read outs for the PC components (CPU, VGA, PSU, HDD, and so on). Can someone help me, and explain how I can do this? I see it as a fun hobby to get into programming, and also reuse a cell phone, so I don't throw it away.

Topic by GeorgeK31   |  last reply


Wood burning stoves

Can anyone help me find a place or outlet for a mechanical  device that will open and close a flap on a wood burning stove for letting in  solid fuel into the burner ,this to be operated by a electrical or clockwork timer.Or a idea to make myself,

Topic by Stanwebb10   |  last reply


25% Discount on Blurb.com

BLURB DISCOUNT: Get 25% off on Blurb.com by using the code: BOOKMAKER25. Each customer can use this promotion 1 time. Offer valid between 2015-10-26 and 2016-01-29. Promotion only valid for books created by the customer and not for Blurb bookstore books. Enter the Book It Contest with Blurb!!

Topic by Carleyy   |  last reply


Coanda effect VTOL or "hovercraft" - making a working model

I am currently working on the design of an impeller driven lifting device utilising the Coanda effect. My 3D printer is of course a great help here but only useful to test the vacuum cleaner assembly that I salvaged for the motor and impeller part. So far it is just I am interesting to see myself instead of reading it on the net but I was wondering if any RC model makers out here would be interested too? I have no clue about the available brushless motors and controllers or how much extra weight for electronics, batteries and so on but could provide the 3D files and design tips if anyone would dare to create a working RC model. Unlike all the designs on Youtube no propeller is used for the lift! Those designs might still use the Coanda effect, or better adjust it's airflow, for the steering but the actual lift comes from a prop. An impeller as used in vacuum cleaner does not provide lift and is more the "real deal". The last real world project that I know of was the Avrocar that was tested during the cold war but never made it into production. Just though it might be an interesting project to build your own "flying saucer" :)

Topic by Downunder35m 


Makers Market Research Group Paying up to $300

Hi, My name is Kyle and I am the Market Research Coordinator at watchLAB, a nationwide market research company. I am reaching out to you because we are conducting a PAID study for people who considers themselves a "maker", which is someone who creates or manipulates physical objects with digital components. Our client is a major tech manufacturer and wants feedback and insight from Makers to help shape new products and services for the Maker community. The study consists of an online board from December 1st to the 4th that takes 3 hours to complete, and compensation would be $250. Our client will then choose a select group of people who completed the online board to be in either a follow-up telephone interview or an in-home interview. The telephone interviews will be taking place December 7-11, take one hour long, and pay $150. The in-home interviews will be taking place December 14-18, take 3 hours long, and pay $300.   If you or anyone at your company is interested in participating, please have them email me at Kyle.Scheffler@watchLAB.com. Feel free to email me with any questions or concerns you might have! Thank you! Best, Kyle Kyle Scheffler |  Market Research Coordinator email:  Kyle.Scheffler@watchLAB.com watchLAB

Topic by KyleS55   |  last reply


Questionable website

I'm getting the feeling the people running this website don't really care about fixing it's problems, twice now I've tried to post a new topic and it fails to even show up, if these problems are not fixed and my 3rd attempt fails I will be contacting admins to remove my content.

Topic by pursang   |  last reply


Text onto soda can

I'm trying to apply some text onto the material from a soda can, but I don't have the neatest handwriting and it's not even meant to be a normal font. What are some good ways to apply some guidance for me when I go to actually scribe onto the material? The end result I'm aiming for is a box similar to this one; https://www.instructables.com/id/Drink-Can-Tinwork/ but with the Sith Creed written in one of the Star Wars fonts, and most of the visible work being done by a dremel. I've thought about making a stencil, but I'm not sure I can reasonably cut some of those shapes at the necessary size. Toner transfer may be an option, but I am not too familiar with that process.

Topic by Bobmonkey07   |  last reply


Posting go into the digital nirvana - AGAIN

I just finnished a lenghy reply, hit the "Make Comment" button and after a short wait my posting was gone, just totally gone! Going back in the browser did not bring it back either. To make things worse I could not write this complaint in Firefox as it is impossible to select the categories, so instead I had to fire up Chrome to make this posting. This exact behaviour of posting going lost during the sending period happend before and was supposed to be fixed. Yes, I did the usual troubleshooting of browser cache, history, dns and so on - but that is of no use anyway one you lost a posting. I don't know about others but I am starting to get sick and tired of bugs making the proper use of this website impossible. Am also sick and tired of being forced to create my postings and Ibles in an external editor just because Instructables collects more bugs than users at some stages. Said it before and say it again: If you can't fix the damn Autodesk software properly just just a forum software that is proven to work properly! Getting far too frustrating here :(

Topic by Downunder35m   |  last reply


Knex Predator Weapons

OK, I have been watching Predator, AVP, & AVP-R, & I was thinking: wouldn't it be cool if someone made some of the Predators' weapons out of Knex? So, here is what I'm gonna do. First, if at least 1 person replies to this forum and agrees with the idea OR posts an instructable for any Predator weapons, then I will create a group just for the Predator weapons, kinda like the Knex Halo Weapons Group that I made. I would really like to see that shuriken that the Predator uses. Anyways, have fun. "You are one ugly...." (Screams like the Predator)

Topic by Knexfan   |  last reply


Arduino and esp8266

Hi, I am new to arduino and creating project where i connected arduino uno and esp8266 as follows: UNO --- ESP8266 RX ----- RX TX ----- TX GND --- GND 3.3V --- VCC 3.3V --- CH_PD I power arduino uno and it is working fine. i checked by uploading blink program. when i connect esp8266 to arduino uno and open serial monitor i am getting some garbage text which is shown in below screen shot. also when i connect esp8266 to uno the orange light is continuously blinking. no action on entering AT command in serial monitor. some one please let me know how to get it work.

Topic by sayedfar   |  last reply


Backward Typing!

I just published a topic on cleaning juice stains from carpet. (home section) When I first started writing the topic, my 1st sentence came out ".der gnihtemoS" At first, I said 'what the??!!"  but then I realized that it was PRECISELY backwards of what I had written. "Something red." After deleting the glitch sentence, it went normally. Curious.

Topic by Toga_Dan 


Cup warmer plate/tray to install in cupboard

My house is rather cold in the winter, and when I make coffee in the morning I have to manually heat my espresso cups by filling them with warm water. A lot of automatic espresso machines have cup warmer trays. I don't want to buy a new coffee machine. I am thinking it would be possible to place some kind of warming mat under my cups in the cupboard, somewhat similar to heated mattresses / heating blankets. I haven't found any existing products that fit the description. Any input on this? :)

Topic by jaknudsen   |  last reply


The three buttons on the front of the instructables robot, what do they do?

You'll have to forgive me if this has already been addressed elsewhere. I was wearing the very snazzy Instructables robot tee-shirt of which i am now the proud owner and my wife posed the query over sushi the other day, I didn't know what to tell her, lol. Does anyone happen to know? Thanks!

Topic by 4WantofaNail   |  last reply


Sensor to eventually measure weight ( up to 250 lbs)

Hi everyone, I am stuck trying to find a method or sensor to do what I want. Basically, I am trying to make a cheap flat weight scale- light weight and portable; thinner than using load cell sensors. I was hoping for a flat compression fabric or piezo resistive pressure sensor, but have not found what I was looking for. Does something like this exist?

Topic by appl314   |  last reply


Contest : Bike Weapons

I was hoping to pimp out my bike with James Bond esque weapons. An example would be a way to deploy oil, tacks, smoke, or water out the back of the bike. Rockets wouldn't be so bad either. Mines or flame thrower would be great. Try mounting the control box on the handle bars. I do have basic Oxy-acetylene setup that is good for all around jobs. I also have black powder and other chemicals like KNO3. Please leave a picture below of the project with details, plans, etc. etc. I know there are a lot of bright minds out there who would find this fun and challenging project tailor-made for them.

Topic by DELETED_M4industries   |  last reply


To all Bike riders/cyclists/commuters: What do you ride?

I ride a 2000 MGX DxR [yes, the crappy, chinese, walmart version] to work every day, road commuting. I also ride it off-road, singletrack, streams, washboards, you-name-it-I've-ridden-it, with no issues. thus far, I have put around 19,000 miles on it, all told. totally original [otherthan tubes, tires, chain, cassette, brakes, etc] parts, still weighs 38 pounds. Anybody else ride something as cheap and inappropriate as commuter? What do you ride every day? any bikes you'd LOVE to have? Any funny bike stories? Cheers,    B.E. 'Brick' Montgomery 

Topic by Hazzard2theworld911   |  last reply


First Motorcycle, budget

Hi. I've recently been hooked on motorcycles. I'd love to get one and start riding and working on one. There are a few problems. First off, I'm only 13 years old, but I'm 5'11" and 160 lbs. I know that it's illegal for me to ride a motorcycle, and I'm not even sure if I can take a mfs course at this age. I wouldn't be riding on any big roads, and would barely even ride it, besides riding it to my best friends house (he'd help me work on it, his dad is into bikes, and he only lives a few miles away), and around a few back roads in my neighborhood. My dad has been riding motorcycles for before I was born, and has multiple types and sizes of bikes (he has a touring Harvey, I believe it's a VRSC, a ninja 600, and a dirt bike which I don't know the model of). He could teach me and show me how to properly ride a motorcycle. Also, I don't know what kind of bike to get. I've heard dual purpose bikes are good for starters, but I really have no idea where to start. I'd appreciate input. Preferably it'd be a bike that I could work on and modify/upgrade as I go along. Thirdly, is price. I don't really know my exact budget, but it'd be around $600-$700. I know it's barely anything, but I'd have to pay for the bike myself, and that's all I have. If it's even possible to purchase a bike at this price point, it doesn't even have to run, I'd love your input. Ideally I'd like to keep everything to the absolute bare minimum, as cheap as possible. My dad already has safety gear, and I could borrow it if I rode my bike.  Again, thanks for your input, and any and all suggestions will be greatly appreciated. 

Topic by IvanT3   |  last reply


Can the prize be shipped in Pakistan If I win a contest

I'm from Pakistan. I have participated in a contest. If I win,  will I receive prize in my country. does it shipped in Pakistan? 

Topic by TehseenHasan56   |  last reply


Help DIY Wireless Video Transmitter

Hi !  I'm working on a Tech Project and I need a wireless video transmitter.  A webcam or any video camera provides a video stream, my computer receives it.  I've searched on the Internet but I've only found shopping solutions.  There are different way of transmitting which seem to be efficient :  - IP - Wifi  I want to make it by myself => build the transmitter and the receiver, connect the transmitter to the video camera, connect the receiver to the computer to collect the video stream. This is a project for my engineering school. Is it possible and affordable for 100€ ?  What do I need ?  Thanks 

Topic by CedricA2   |  last reply


heat_up room by soldering iron ?!

Hi everybody :D I have a soldering iron and a computer fan. and I was thinking if I can use them to heat up my room!  I asking If any body tried it beform or have an idea. 

Topic by abbadi   |  last reply


Computer *LAG-O-RAMA* Fest

'Sup. So I have a cheap crappy computer, (even i realize it) and on most games it should work smooth; but it lags. VERY often. But it lags on every game similarly: It would work smooth for about 10 seconds, and then it would be like playing a playstation game on a windows 98. Over and over again. It lags on most the games i have: Battlefield 3, just cause 2, saints row 3, mafia 2, even on gta san andreas. This is very annoying and my parents are alittle stingy on money. H3LP M3 PL34ZE??

Topic by Doc Penguin   |  last reply


Research on DIY: Looking for Volunteers in- and around Amsterdam

Hi all, My name is Tal Amram, graduate student of Industrial Design at the Delft University of Engineering. For my graduation assignment I’m setting up a study about the potential benefits of ‘connected objects’ in an Internet of Things for creative processes of the Maker community. More specifically, I am aiming my study at ‘Home Improvement’, interpreted also as the making of furniture, lighting, home decoration or domotics.  For this study I am looking for volunteers in Amsterdam (or its proximity) to execute a small Home Improvement design assignment (for your own home) that takes a week, on which you will spend about 20-30 minutes per day. You eligible if you have experience with making things to improve your home environment and have worked with 3D-printers before. You will be provided by me with a package that contains a logbook with short assignments and some materials to use for simple prototypes or inspiration. This week starts on Monday, November 23rd and ends on Monday November 30th with a session in the Waag FabLab from 19:00 - 20:30. During this session, I will host a group discussion with all six participants during which we will share our experiences and discuss our separate processes. I will reserve the 3D-printer for (- and preceding) this session so as to make it possible to materialise your design. I would love to hear if you, or perhaps anyone you know, would be interested in participating in this study! Please contact me via my e-mail address as provided below. Feel free to contact me also in case you have any questions or remarks about this study or my project in general. t.amram@tudelft.nl Best Regards, Tal Amram

Topic by talamram 


When Was It Posted??

Is it just me, or did the instructable "Posted On" date get taken off of the pages? Why? Just curious, Jeff

Topic by AptPupil   |  last reply


Electric bike band brakes.

Hi all. A few weeks ago I asked on here about batteries for my bike and got some very useful input, as a result I bought a set of batteries from great dealer who was not only able to supply batteries matched to my bike but also gave me a remarkably decent discount and delivered them in two days, they cost me almost £40.00 less than the ones I bought a few years ago and the bike is now running better than ever. I now have another problem I'm hoping to get some help with, the rear brake on my bike is a band brake which I suspect has not been changed since the bike was new, it still works but not nearly as well as it should so it's time to replace it with a new one. When I rang the importer and sole stockists of these bikes in the UK about some other replacement parts a few months ago I asked about a replacement brake and they are asking the outrageous sum of £38.00 plus VAT and shipping for one meaning I would be paying out around £57.00. I know these brakes are quite common so had a hunt around the web and I have found quite a few with prices ranging from £5.00 to £19.00 but have some questions about size. The casing of the brake on my bike around the drum is around 4 1/2" diameter I have found various sizes available some smaller some larger but looking at the way it is mounted it seems to me that I could use pretty much any size I wanted providing the pitch between the two holes used to mount the drum on the wheel is the same, unfortunately none of the brakes I have found gives details like this. Does anyone know about these type of brakes and if the mounting holes are the same standard pitch on all the sizes of drum? if so would I be correct in thinking I could mount any size brake I wished? if I can I would be tempted to increase the braking power by fitting a larger one than it currently has. Thanks in advance for your help. NG.

Topic by Nostalgic Guy   |  last reply


PDF won't open

RE: https://www.instructables.com/id/Secret-Hideout-1/?download=pdf I can download a PDF, however when I try to open it, it gives me the following message. I have gotten around this by creating a "custom" PDF. Message is from normal PDF. It opens the PDF, but it is blank. Whoops! I take it back. I get the error when trying to get a normal PDF, NOT a customized one. The customized one opens. Thanks. Catherine iMac, System 10.10.5 Firefox, version 43.0b2

Topic by Cat00x 


Self-Balancing Smart Scooter

I hope you enjoy the job, Greetings

Topic by Andromeda30   |  last reply


Spring Airsoft Sniper Rifle

I want to build a large spring airsoft rifle that looks as realistic as possible. I will be using a large very strong spring from ace hardware. I want it to be as efficient as possible but i want it to also be very cheap. Any ideas? I would prefer a metal body, but wood or plastic would be ok. I was also wondering if somebody had a drawing of the trigger mech and magazine assembly. i was thinking a brass inner barrel with a larger metal or pvc outer barrel. i want the gun to look like the one in the picture. i think it's a mauser

Topic by itri45   |  last reply