Instructables: question - arduino http://www.instructables.com Sat, 25 Jun 2016 16:27:12 PDT BLOX v1.01 How do I see how many votes my instructable has for a contest? http://www.instructables.com/answers/How-do-I-see-how-many-votes-my-instructable-has-fo-1/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif Yavnik I have participated in Automation Contest and I want to know how many votes I have is there any way to know that??? http://www.instructables.com/id/Control-Your-Home-Appliances-With-TV-Remote/    this is my instructable.
By: Yavnik

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Fri, 24 Jun 2016 20:05:16 PDT
Cheap way to make an arduino play multiple sounds (MP3/WAV)? http://www.instructables.com/answers/Cheap-way-to-make-an-arduino-play-multiple-sounds-/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif DoctorWoo First off, I know that doing this straight forward is not possible. The are a few ways I think I can do this. The main one I'm looking at is to have a MP3/WAV board hooked up to a speaker. I'll have two setups, one that is set to have three sounds (start, stop, fire, and only one of those three sou...
By: DoctorWoo

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Fri, 24 Jun 2016 15:40:44 PDT
Cheapest Attiny85? http://www.instructables.com/answers/Cheapest-Attiny85/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif Soumojit Hi, I am planing to buy a Attiny85 to make a led pov display. I live in India So can you tell me where I can Find cheapest Attiny85with free delivery in Internet??
By: Soumojit

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Thu, 23 Jun 2016 10:09:33 PDT
How can I change an "if" in an arduino code ? http://www.instructables.com/answers/How-can-I-change-an-if-in-an-arduino-code-/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif GellertK So I have this code from James Hutton and what I want to do is to change the "rainbowCycle" to something else, like "NeoPixel_Cylon_Scrolling_Eye". Is it possible ? Thank you very much !
By: GellertK

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Sun, 19 Jun 2016 10:31:02 PDT
I want to make and old school dial water meter using arduino and flow meter? http://www.instructables.com/answers/I-want-to-make-and-old-school-dial-water-meter-usi/ http://cdn.instructables.com/FAA/807A/IPLH8S34/FAA807AIPLH8S34.SQUARE2.jpg http://cdn.instructables.com/FAA/807A/IPLH8S34/FAA807AIPLH8S34.SQUARE.jpg http://cdn.instructables.com/FAA/807A/IPLH8S34/FAA807AIPLH8S34.SMALL.jpg ashishngupta i need help making a old school dial meter like the ones used in electricity or auto richshaws. http://static.splashnology.com/articles/Examples_of_Skeuomorphism_in_Graphic_Design/Rickshaw_Meter_app_by_ranganath_krishnamani.png i want to flow water through a flowmeter and record data from arduino....
By: ashishngupta

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Sun, 19 Jun 2016 00:35:43 PDT
Is there a way to change the value of a variable and keep it afterwards? Arduino http://www.instructables.com/answers/Is-there-a-way-to-change-the-value-of-a-variable-a/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif rojascan Hello everyone, I don't really know if this is possible, I am using processing, arduino and a force sensitive resistor to control a servo and I want to change the value of a variable and then if I reset the arduino, it will kept the new value. Is there anyway to do this? This is the part of my cod...
By: rojascan

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Fri, 17 Jun 2016 11:40:03 PDT
Hc-05 and Arduino connection http://www.instructables.com/answers/Hc-05-and-Arduino-connection/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif dimitrakis1992 Hello to everyone.I have make a bleutooth robot which i can control it via android(tablet) and i have a problem with the code.I want from the robot to stop when connection lost or bluetooth disconnected.Now when the connection lost the robot go ahead and falls on the objects.How to add this line on ...
By: dimitrakis1992

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Thu, 16 Jun 2016 14:20:43 PDT
how do I connect the Wemos D1 r2 to an L298n motor driver to control 2 DC mootors? http://www.instructables.com/answers/how-to-connect-the-Wemos-D1-r2-to-an-L298n-motor-d/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif huguens Hi , I'm new and I'm looking for help to see how we can wire a Wemos d1 r2 and L298n motor driver. My objective is to control 2 DC motors with Blynk. I will really appreciate anyone's answer or sketch or link to help me out. thanks
By: huguens

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Wed, 15 Jun 2016 11:49:56 PDT
arduno Uno connect to laptop USB OK,connect to external power not OK? http://www.instructables.com/answers/arduno-Uno-connect-to-laptop-USB-OKconnect-to-exte/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif gada888 Hi,All I am experiencing a headache now.I connected arduino UNO and a serial relay board,then i uploaded my sketch to it,the problem is once i plug it into laptop.the project works,but once i use a external power,say,12V 1A,or 5v 1A.or lipo batteries(5v1A and 12V1A)to power jack of UNO,it won't beh...
By: gada888

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Fri, 10 Jun 2016 23:13:12 PDT
How to over- power an led with arduino ? http://www.instructables.com/answers/How-to-over-power-an-led-with-arduino-/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif Jack Vu Is there a way to draw max (or even more than max) current to a LED with arduino as the controller ?  The LED is a high power LED that use a 12V source. I used a power MOSFET IRF620 as the driver. My application is that I flash the LED on and off in a very short amount of time (strobe light). (the ...
By: Jack Vu

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Mon, 6 Jun 2016 13:23:04 PDT
Why wont my 2 channel relay board allow power through the output? http://www.instructables.com/answers/Why-wont-my-2-channel-relay-board-allow-power-thro/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif Jamie Toeg I have a 2 channel relay board connected to an arduino nano and when i send a low signal to it i get the light on the relay board but nothing goes through the common and normally closed pin. I have the relay running on 9v instead of 5v. would this be a problem? when I test it with my multimeter it m...
By: Jamie Toeg

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Thu, 2 Jun 2016 10:07:00 PDT
Arduino 3 button light control http://www.instructables.com/answers/Arduino-3-button-light-control/ http://cdn.instructables.com/FHA/9IYC/IOVP89T1/FHA9IYCIOVP89T1.SQUARE2.jpg http://cdn.instructables.com/FHA/9IYC/IOVP89T1/FHA9IYCIOVP89T1.SQUARE.jpg http://cdn.instructables.com/FHA/9IYC/IOVP89T1/FHA9IYCIOVP89T1.SMALL.jpg BlueSuneLIght A friend asked me to build him a controller for a 12v Arrow board (roadwork sign) he got second hand (original controller is completely missing) So after asking him what he wanted it to do, it needs 4 modes: 1: Off (that is easy) 2: Point left 3: Point right 4: Hazard mode (top and bottom of the ar...
By: BlueSuneLIght

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Wed, 1 Jun 2016 09:12:07 PDT
Is there a quiz program to answer with yes or no that is compatible with a arduino uno. http://www.instructables.com/answers/Is-there-a-quiz-program-to-answer-with-yes-or-no-t/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif nassinho I have a question about a project for school with a arduino uno. I have one arduino uno and 4 servo motors and 2 LCD displays, and some jumpwires (male and female) What i want to create is a race course made out of wood and i want to use the motors as levers. You can play this game with 2 players a...
By: nassinho

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Tue, 24 May 2016 05:12:21 PDT
Can I create a quadrocopter RC transmitter using an Arduino? http://www.instructables.com/answers/Can-I-create-a-quadrocopter-RC-transmitter-using-a/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif TylerT35 I recently started playing with a quadrocopter. I love it, but I am not a fan of the traditional RC transmitters. I believe that they were designed for older RC airplanes and I think the design could be improved upon. I have also recently started experimenting with Arduino. I bought a USB shield and...
By: TylerT35

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Mon, 23 May 2016 20:26:02 PDT
Why my instructable had entered a contest but I can not see it? http://www.instructables.com/answers/Why-my-instructable-had-entered-but-I-can-not-see-/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif VUNAMANH8112
By: VUNAMANH8112

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Mon, 16 May 2016 17:35:08 PDT
Create standstill effect with LED from hall effect sensor ? http://www.instructables.com/answers/Create-standstill-effect-with-LED-from-hall-effect/ http://cdn.instructables.com/F7C/YH5D/IO258LYD/F7CYH5DIO258LYD.SQUARE2.jpg http://cdn.instructables.com/F7C/YH5D/IO258LYD/F7CYH5DIO258LYD.SQUARE.jpg http://cdn.instructables.com/F7C/YH5D/IO258LYD/F7CYH5DIO258LYD.SMALL.jpg Jack Vu Hi everyone, A little bit info of what I'm working on. I am trying to create a standstill effect of the spokes of the car rim. I attached a hall effect sensor and a magnet to inside of the rim . I have tried 2 different approaches : ( code for each method are also attached)              1. use the...
By: Jack Vu

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Wed, 11 May 2016 10:22:32 PDT
i want my motors speed to be constant with the temperature via an equation, its a school project. help!? http://www.instructables.com/answers/i-want-my-motors-speed-to-be-constant-with-the-tem/ http://cdn.instructables.com/FU2/VJP1/IO1R2MGJ/FU2VJP1IO1R2MGJ.SQUARE2.jpg http://cdn.instructables.com/FU2/VJP1/IO1R2MGJ/FU2VJP1IO1R2MGJ.SQUARE.jpg http://cdn.instructables.com/FU2/VJP1/IO1R2MGJ/FU2VJP1IO1R2MGJ.SMALL.jpg Fthol1 my project is to make a fan that will be constant (speed) with the temperature of the surrounding, display the temperature on an lcd screen and have a servo tilt it up and down. I have made my code for now and it seems correct, i think my problem is with the clarity of my code or the power. lcd + mo...
By: Fthol1

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Wed, 11 May 2016 06:03:04 PDT
Super Easy Arduino Question? http://www.instructables.com/answers/Super-Easy-Arduino-Question/ http://cdn.instructables.com/F2U/0B7F/IO2TKRG0/F2U0B7FIO2TKRG0.SQUARE2.jpg http://cdn.instructables.com/F2U/0B7F/IO2TKRG0/F2U0B7FIO2TKRG0.SQUARE.jpg http://cdn.instructables.com/F2U/0B7F/IO2TKRG0/F2U0B7FIO2TKRG0.SMALL.jpg Mpc1055 Hey all, below is schematic for a really simple water level sensor. I want to hook this up to my Arduino so that Arduino will know when each LED is ether HIGH or LOW. My question is where at what point in the schematic do I hook up the digital read pins?   
By: Mpc1055

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Wed, 11 May 2016 05:22:04 PDT
Determine the distance between a magnet and a hall effect sensor? http://www.instructables.com/answers/Determine-the-distance-between-a-magnet-and-a-hall/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif Jack Vu Hi guys, As the title say, I am looking for a way to determine / measure the distance between the magnet and the hall effect sensor. What I want to archive is that the trigger (or the switch to LED) only activate if the magnet within ~0.5 cm - 0.3 cm . Any more than that, it wont do anything. My cod...
By: Jack Vu

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Thu, 5 May 2016 21:42:53 PDT
Powering a 16x2 LCD Screen? http://www.instructables.com/answers/Powering-a-16x2-LCD-Screen/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif Mpc1055 Hey all I am relatively new to the Arduino platform and learning as I go. I have a 16x2 LCD screen that I am trying to learn how to use. I hooked my positive lead to pin 2 and the Ground to pin1 and nothing lit up. I then hooked a potentiometer up to pin 3 to try and adjust the contrast still nothin...
By: Mpc1055

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Thu, 5 May 2016 08:21:35 PDT
how to control DC motor go forward, reverse and stop with IR sensor? http://www.instructables.com/answers/how-to-control-DC-motor-go-forward-reverse-and-sto/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif 승주권 hello to use arduino, i am trying to control DC motor via IR sensor, but  i have no idea how to coding the source put in the conditions the conditions are under parts - 1. arduino Mega 2. IR sensor 3. DC motor 4. L298n(motor driver) Current state  = DC motor STOP / IR sensor ON --- CONDITIONS...
By: 승주권

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Tue, 3 May 2016 12:37:05 PDT
how can i do submit button when i click it i go to URL example google.com in arduino ethernet shield code?? http://www.instructables.com/answers/how-can-i-do-submit-button-when-i-click-it-i-go-to/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif ahmad_pika91
By: ahmad_pika91

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Sat, 30 Apr 2016 09:51:01 PDT
how can i protect my arduino ethernet shield code with password, then who enter the ip address is requested for passwrd? http://www.instructables.com/answers/how-can-i-protect-my-arduino-ethernet-shield-code-/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif ahmad_pika91
By: ahmad_pika91

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Sat, 30 Apr 2016 09:49:11 PDT
Need help to make the stepper motor rotate in forward and reverse direction using limit switch? http://www.instructables.com/answers/Need-help-to-make-the-stepper-motor-rotate-in-forw/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif MELVINJ5 This is the code I used to forward the stepper for 360 degree,reverse the motor for 360 degree without using the switch. I need help to make the motor rotate in forward direction for 180 degree only after we click a limit switch and when we click the switch again,the motor have to rotate in reverse ...
By: MELVINJ5

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Sat, 30 Apr 2016 06:00:07 PDT
making an LED blink? http://www.instructables.com/answers/making-an-LED-blink/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif Gaudnarok so im doing a school project, and i can't figure out this circuit that my teacher recommended me use. can someone explain it to me? i am trying to make the circuit on a bread crumb board (i think they are called that) and i am not sure what i am supposed to do. i am going to use a 555 timer.
By: Gaudnarok

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Fri, 29 Apr 2016 03:45:20 PDT
arduino wifi shield code what is wrong? why i cant turn on and off the led? http://www.instructables.com/answers/arduino-wifi-shield-code-what-is-wrong-why-i-cant-/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif ahmad_pika91 #include #include IPAddress ip(192, 168, 0, 120); char ssid[] = "TP-LINK_7035CE";     //  your network SSID (name) char pass[] = "(sabra*123)";        // your network password WiFiServer server(80);     // create a server at port 80 String readString;         // stores the HTTP request ///////...
By: ahmad_pika91

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Wed, 27 Apr 2016 00:42:32 PDT
How can I make my arduino communicate with a Windows 10 computer with a C application? http://www.instructables.com/answers/How-can-I-make-my-arduino-communicate-with-a-Windo/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif IsaacPierce Hi I was hoping someone could help me with this. I am very new to the C programming language and I am trying to write a  simple program with a button that when clicked sends my arduino a "1" so that my arduino knows to send me some sensor readings. My arduino is on COM5. if you know anything about t...
By: IsaacPierce

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Tue, 26 Apr 2016 15:14:09 PDT
Unable to retrieve Rfid variable. http://www.instructables.com/answers/Unable-to-retrieve-Rfid-variable/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif HiteshP16 I am unable to retrieve string (RFID) from Arduino connected to Android app through Bluetooth . Arduino code #include #include #include #define SS_PIN 10 #define RST_PIN 9 char command; String string; MFRC522 rfid(SS_PIN, RST_PIN); // Instance of the class MFRC522::MIFARE_Key key; byte nui...
By: HiteshP16

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Wed, 20 Apr 2016 12:18:30 PDT
Turn multiple LEDs on when motion is detected? http://www.instructables.com/answers/Turn-multiple-LEDs-on-when-motion-is-detected/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif xMisaaaki Hi, I'm working on a code where the situation is "if motion sensor reads movement, turn one led on'. This has to happen three times. When the motion sensor read 3 times a movement, the third and las led will turn on, which activates the servo motor to move. Right now I'm stuck at some points in the...
By: xMisaaaki

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Mon, 18 Apr 2016 06:42:25 PDT
Arduino Code for LEDs http://www.instructables.com/answers/Arduino-Code-for-LEDs/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif AlexH155 I am trying to get it to work so one button turns on and off the lights and then another button that switches one set of lights on then when pressed turns those off and puts on another set on. Basically one set of yellow lights on then when the button is pressed they turn off and the red lights go o...
By: AlexH155

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Sat, 16 Apr 2016 12:57:29 PDT
3D printing stand alone heated bed controller with Arduino? http://www.instructables.com/answers/3D-printing-stand-alone-heated-bed-controller-with/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif ad5000 So I saw a video today with the 3D printing nerd and he showcased his gmax 3D printer with and a new heated bed, and it had a seprate heated bed controller. The video here in case you want to view it, http://youtu.be/ohPhMVtxsK4 and gcreates website for the heated bed itself, https://shop.gcreate.co...
By: ad5000

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Wed, 13 Apr 2016 15:08:05 PDT
How do I get RPi flask server to control Arduino over wifi? http://www.instructables.com/answers/How-do-I-get-RPi-flask-server-to-control-Arduino-o/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif ThothLoki I have a RPi web server running flask and a wifi enabled Arduino in my garage to monitor and control various items. I need a way to control the Arduino from the RPi-hosted web page. I am just stumped at how to do this over ethernet/wifi/TCP/IP. Any suggestions and help is greatly appreciated!
By: ThothLoki

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Mon, 11 Apr 2016 21:02:55 PDT
Bluetooth, RGB sensor and Android app http://www.instructables.com/answers/Bluetooth-RGB-sensor-and-Android-app/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif CourageQ This code is supposed to convert information from a color sensor and display what ever color is shown to the sensor as RGB values on the android app.  How can one incorporate bluetooth functionality to the following code?  Any help will be more than greatly appreciated. Even a donation  This is the ...
By: CourageQ

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Sat, 9 Apr 2016 11:04:43 PDT
controlling 100 rgb leds from arduino? http://www.instructables.com/answers/controlling-100-rgb-leds-from-arduino/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif uditha mihiranga Hey there i got 100 of 5 mm rgb led diodes. so i want to run them as string lights. so can i do it via arduino? if it is possible please tell me how to do it. thanks
By: uditha mihiranga

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Mon, 4 Apr 2016 23:41:27 PDT
How to control 6 servos with 6 potentiometers wirelessly using arduino and nrf24l01 wireless tranciever? http://www.instructables.com/answers/How-to-control-6-servos-with-6-potentiometers-wire/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif Science102 I am building a robot arm and am using the master-slave control system with it. In other words I am doing the arduino "knob" example but with 6 servos and 6 potentiometers. I already have the code written for this but it is with a wired connection. I need to wirelessly do this with 2 arduinos and th...
By: Science102

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Sun, 3 Apr 2016 18:55:06 PDT
Xbee interfacing -Need to send PIR sensor value and Gas sensor value from Tx end to Rx end.Read details for further info http://www.instructables.com/answers/Xbee-interfacing-Need-to-send-PIR-sensor-value-and/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif gsuresh1 Hi all, I am building a robot for my project and currently i am facing some issues with it.. Hope someone could help me resolve it. ! Thanks in advance for your help and support !! :-) Detailed specs : First of all i use 3 arduino - 1 at TX (user end) and 2 at RX (Bot side). Now , I am using a PI...
By: gsuresh1

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Sat, 2 Apr 2016 20:26:27 PDT
PIR motion sensor,DC motor and Speaker alarm system help? http://www.instructables.com/answers/PIR-motion-sensorDC-motor-and-Speaker-alarm-system/ http://cdn.instructables.com/FRX/1MYB/IMDZCTDE/FRX1MYBIMDZCTDE.SQUARE2.jpg http://cdn.instructables.com/FRX/1MYB/IMDZCTDE/FRX1MYBIMDZCTDE.SQUARE.jpg http://cdn.instructables.com/FRX/1MYB/IMDZCTDE/FRX1MYBIMDZCTDE.SMALL.jpg TianL4 I'm trying to create an alarm system using a PIR motion sensor, DC motor and a speaker so when someone gets close to it the DC motor should vibrate and sound and alarm through the speaker. (using and Arduino UNO) I've got  an external 9V battery powering it. the PIR and sound works fine I just want ...
By: TianL4

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Thu, 31 Mar 2016 19:09:20 PDT
Need help to move a solenoid to sound http://www.instructables.com/answers/Need-help-to-move-a-solenoid-to-sound/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif lonesoulsurfer Hello all, I am working on a project where I need a solenoid  move to sound.  I was thinking of using an Arduino and a microphone to achieve it but I'm a little stuck.  The goal is to have music playing and have the solenoid move to the music.  I also want it to move to noise so that's why I went do...
By: lonesoulsurfer

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Thu, 31 Mar 2016 17:11:29 PDT
Help building a CNC/3D printer? http://www.instructables.com/answers/Help-building-a-CNC3D-printer/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif KhayhenS Hi, I'm working on building a mini CNC machine then upgrading it to a 3D printer after that using some old CD drives. I want to use the GRBL controller program for this machine. Firstly, most guides ask to use a A3967 driver module for the stepper motor but its pretty hard to obtain that from where ...
By: KhayhenS

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Tue, 29 Mar 2016 05:34:18 PDT
How to use nrf24l01 (transciever) with arduino to control servos with potentiometers? http://www.instructables.com/answers/How-to-use-nrf24l01-transciever-with-arduino-to-co/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif Science102 I am trying to  control 6 separate servos connected to one arduino 6 seperate potentiometers connected to another arduino. The two arduinos are connected wirelessly with an nrf24l01 connected to each arduino (total of 2 nrf24l01 being used). I modified the code from this instructable: http://www.ins...
By: Science102

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Fri, 25 Mar 2016 21:59:19 PDT
Arduino Base64 encoding problem http://www.instructables.com/answers/Arduino-Base64-encoding-problem/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif Downunder35m I have a value that in a later step will be base64 decoded with some other values. The problem is that the input range for this value is from 0 to 10000 - so outside the 255 for base64. The line causing me the headache is from a Python script but the math for the Arduino are the same: NewValue = ((...
By: Downunder35m

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Tue, 22 Mar 2016 23:48:03 PDT
How to fix a servo with a burned out green circuit board? http://www.instructables.com/answers/How-to-fix-a-servo-with-a-burned-out-green-circuit/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif Science102 I have a Hitec HS -805BB servo that seems to have a burned out component on the green pcb circuit board (the component looks like a H- bridge of some sort). For this reason the servo won't work. I tested the potentiometer, gears, and DC motor inside this servo and they work great. I was wondering if...
By: Science102

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Tue, 22 Mar 2016 21:26:20 PDT
How to blink a single ws2812b led? http://www.instructables.com/answers/How-to-blink-a-single-ws2812b-led/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif gada888 Hi, I am writing a code which include a segment below: if (sensorValue = 500) {    blue=255;    red=0;      }   else {    blue=0;     red=255; The above code made the led show either red or blue.but I wanted the LED(a single ws2812b) to blink in RED.but i don't know how to input the value.any su...
By: gada888

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Thu, 17 Mar 2016 02:05:12 PDT
Looking for someone to write the code required for my Arduino project? http://www.instructables.com/answers/Looking-for-someone-to-write-the-code-required-for/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif 01221 I do some volunteer work at a remote hospital in Zimbabwe and travel there every couple of years from Canada with a group to do some project work. A couple of years ago we did a lot of work on replacing their water supply infrastructure. Basically they have two pumps from a water source that feeds 5...
By: 01221

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Wed, 16 Mar 2016 08:35:18 PDT
ARDUINO: how do I check if the inputString has just numbers and not letters?? http://www.instructables.com/answers/ARDUINO-how-do-I-check-if-the-inputString-has-just/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif SofiaM21 I am writing a program, and in the program there is a part where you can change password. Now, I want the program to accept only numbers, and only 4 tabs (Example: 1234, 5678 and more. between 0000 to 9999). how do I do that? what function should I read about? thank you in advance 
By: SofiaM21

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Sat, 12 Mar 2016 05:37:45 PST
How to format instructions on the chess playing robot project? http://www.instructables.com/answers/How-to-format-instructions-on-the-chess-playing-ro/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif PersonP2 I have been working on the project found on this instructable, and I can not figure out what to enter in the serial monitor. To be clear I have only built the x y, the motor assembly. So the only the code found in the folder in the zip file named motor controller. In other words, my question is what...
By: PersonP2

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Sat, 5 Mar 2016 23:20:53 PST
Arduino or AVR chips? http://www.instructables.com/answers/Arduino-or-AVR-chips/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif ShuvamP I have a strong will to learn micro controllers, but i am confused with certain aspects . Since, i am new at these, so please suggest me. Which one should i chose arduino or avr chips. Please, also suggest , which programming language would be easy , arduino based or .c based (avr) language. I am al...
By: ShuvamP

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Sat, 5 Mar 2016 11:33:05 PST
How do i make an arduino robot follow a pre determined path using my phone's GPS by connecting it through bluetooth? http://www.instructables.com/answers/How-do-i-make-an-arduino-robot-follow-a-pre-determ/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif Hyder Husain Arastu
By: Hyder Husain Arastu

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Sat, 5 Mar 2016 06:58:28 PST
Arduino IDE wont load to Mega 2560 it gets half way through the compile and upload, then says com X is already in use? http://www.instructables.com/answers/Arduino-IDE-wont-load-to-Mega-2560-it-gets-half-wa/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif Dr.Z2 I am running win 7 and it doesn't matter what the baud rate it set at for the port. There are no other programs running to lock up the port and only usb plugged in is the 2560 and the keyboard. Someone please tell me the secret. Thank you in advance! Oh and it doesnt matter what version IDE I use ei...
By: Dr.Z2

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Mon, 29 Feb 2016 18:08:02 PST
Is there a way to count button pushes on an arduino and have the led blink after pressed the button 4 time? http://www.instructables.com/answers/Is-there-a-way-to-count-button-pushes-on-an-arduin-1/ http://www.instructables.com/static/defaultIMG/default.SQUARE2.png http://www.instructables.com/static/defaultIMG/default.SQUARE.png http://www.instructables.com/static/defaultIMG/default.SMALL.gif AzamJ i would like to make if the button pressed 4 time.. led will start blinking for 5 second and if button pressed 8 time.. led will start blinking for 10 second... Can anyone help me with an example code or a tutorial somewhere? Greatly Appreciated!
By: AzamJ

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Mon, 22 Feb 2016 23:39:39 PST