Instructables: question - arduino Sun, 22 Jan 2017 15:29:38 PST BLOX v1.01 Can I control a robot with a wireless controller with bluetooth modules? Shizen I'm working on a Hexapod right now, but I haven't found a way to control it wirelessly. I have tried working with nrf24L01 modules but just can't find a way for it to work.... Right now I have 2 HC-05 and 1 HC-06, can I do it? My plan is to control the hexapod (controlled by an Arduino) with a cont...
By: Shizen

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Sat, 21 Jan 2017 09:17:27 PST
Hi, I have a problem with a 16x2 lcd... IlirD2 So I connect this display to my arduino uno and I upload the code from the arduino website. I also do the same wiring... But the lcd displays only a row of black boxes. I tried many other wiring options and connections from the Internet but none of them works. I have always the same resut. wating yo...
By: IlirD2

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Thu, 19 Jan 2017 11:58:39 PST
RGB POV AzamA9 Hello  friends! Im  make RGB pov using Arduino,   How to control 6 RGB Led  using  3 transistors?  please helpme  arduino code
By: AzamA9

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Tue, 17 Jan 2017 22:41:42 PST
Coding a traxxas rc car? ConnorB62 Hello everyone I have a Traxxas funny car that I am trying to code using an Arduino with a motor shield. the motor has a brushless DC motor that is hooked up to a ESC then has a output the same type as a servo motor. and the front steering is a servo motor as well. I have a competition where I need ...
By: ConnorB62

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Wed, 11 Jan 2017 14:04:34 PST
can i plug my arduno into a 5v converter? inconceivable1 all I want to know is if I can use the chord that connects my arduino uno to the computer and plug the usb into a phone charger converter that goes into the wall. Thanks for awnsering! : )
By: inconceivable1

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Wed, 11 Jan 2017 00:24:25 PST
How do I make 3 LEDs alternately fade for a night light? inconceivable1 I'm trying to make a night light for my little sister and thought it would be cool if I could make the leds fade alternatively. basically  the red would get bright and then dim and then the green would get bright and then dim and lastly the blue would get bright and then dim and then the cycle would...
By: inconceivable1

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Mon, 9 Jan 2017 16:46:11 PST
Using Arduino Uno with mCar Program? RocketPenguin Makeblock is a software packaged developed around the Me Orion, which is a board that is based off of Arduino, and according to their website, is cross compatible. However, they lack any information on pinouts between the two. I'd like to make the mCar project, but don't want to purchase the Me Ori...
By: RocketPenguin

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Sun, 1 Jan 2017 13:02:35 PST
How to burn arduino bootloader to atmega328p using arduino Pro mini? Suraj Bhawal For past 3-4 hours I've been trying to burn arduino bootloader to atmega328p using a pro mini. But i can't figure it out. I've reffered to many tutorials and THIS one seems to be using a pro mini.. I've built a standalone arduino circuit according to's guide connected to the pro mini and...
By: Suraj Bhawal

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Fri, 30 Dec 2016 01:41:28 PST
Countdown timer doesn't exit and the loop never repeats? meetshivam We want to run the stepper motor by 180 degrees and want to repeat it after long delay (say 2 hours or so) with a countdown timer displayed in LCD attached to Arduino. Every thing happening successfully except the loop doesn't start after the countdown ends. #include #include const int stepsPer...
By: meetshivam

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Thu, 29 Dec 2016 23:06:23 PST
How to make the GY-87 work probably ? Mavrick23 Hey, This my first question and ... action here with this new account :) My problem is I'm making a quad-copter, which needs some balance and no problem of adding some features like alt. measurement and so. I bought a GY-87 10DOF chip which combines 5 sensors :- MPU6050 Gyroscope MPU6050 Accelerom...
By: Mavrick23

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Thu, 29 Dec 2016 19:38:23 PST
How can I scan to roots of plant that inside of the pot? JeoleX Dear friends, I am an academician in Faculty of Agriculture. Roots development of plants is an important parameter in our experiments. So I need to display the root length without remove the plants from the pots. I need to find the differences between cultivars or treatments about root length, effi...
By: JeoleX

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Fri, 23 Dec 2016 10:32:25 PST
I am having problem in connecting my OV 7670 camera module to Arduino Uno Board . Can anybody help in connecting them? promxx001
By: promxx001

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Mon, 19 Dec 2016 09:59:45 PST
Connecting arduino to an app to display data? JasonK219 I am completely new to arduino, so im sorry if I seem quite uninformed, I have completed a few tutorials but need to create a project around connecting to an app. I am using an arduino uno at the moment. Something I haven't found much or any advice or tutorials on on is connecting the to an app to s...
By: JasonK219

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Sat, 17 Dec 2016 11:50:49 PST
Library for Ili9341 + Arduino Mega? headslant Im working on a project, and I am trying to get this to work. I have one of the 2.4 inch, red tft diplays from china, but I cant get it  to work. I need help finding a library+ doing mods to the library to get it working. I have run a couple of sketches, the touchscreen works fine, its just the scre...
By: headslant

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Mon, 12 Dec 2016 16:54:31 PST
servo programming on arduino? herneise hi, i need a help on my arduino project. i need to make daily program my servo motor on arduino. for example; 23:00 at night ,it should turn right 90';  8:00 at morning, it should turn left(back) 90' also; when i need; i should turn this servo, left-right manually via internet. how can i make this,...
By: herneise

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Sat, 10 Dec 2016 13:53:35 PST
How can i combine these 3 codes?i'm completely new to arduino ? aaryank4 code 1: Ultrasonic sensor and LCD I2C Display #include #include #include #include #define I2C_ADDR 0x3F // #define Rs_pin 0 #define Rw_pin 1 #define En_pin 2 #define BACKLIGHT_PIN 3 #define D4_pin 4 #define D5_pin 5 #define D6_pin 6 #define D7_pin 7 #define ECHO_PIN 11 // Arduino pin tied to ...
By: aaryank4

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Wed, 7 Dec 2016 07:02:17 PST
Arduino controlled NeoPixel 300 LED strip, code only works if I specify 295 LEDs? DeanRogers I am controlling a 5m (60 LEDs/m) NeoPixel RGBW LED strip with an Arduino Uno.  When using the NeoPixel library you specify the number of LEDs connected to the Arduino.  On another LED strip (1m @ 144LEDs/m) specifying more LEDs than are on the strip will just send data to the imaginary LEDs and the...
By: DeanRogers

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Tue, 6 Dec 2016 19:09:12 PST
How arduino shows output on Serial Monitor? Rajkumar2506 Because inorder to display output of any microcontroller in Computer we have to Use MAX232 interface. Microcontroller uses TTL(Transistor Transistor Logic) and Computer Uses RS logic. Max 232 converts TTL into RS Logic so that the output of microcontroller will be displayed in computer. But there is...
By: Rajkumar2506

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Wed, 30 Nov 2016 17:27:43 PST
How to make a piezo sensor gradually light up an LED strip by tapping on the sensor repeatedly? ejbarr77 Hi there, I want to be able to gradually light up an LED strip by tapping on a piezo sensor trigger drum repeatedly. The aim is to have 2 separate LED strips, and a sensor for each, as it will be a game to see who can light their LED strip the whole way up the first. I have a 1m WS2812B 60 LED RGB L...
By: ejbarr77

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Wed, 23 Nov 2016 10:09:53 PST
Having problems with Arduino code for Self Balancing Robot DanishA22 Whenever I try to Compile this code arduino gives me this error E:\Balance Bot\BalanceBot2_PID_Control\BalanceBot2_PID_Control.ino: In function 'void setup()': BalanceBot2_PID_Control:38: error: 'cl...
By: DanishA22

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Sat, 12 Nov 2016 11:24:54 PST
How do I connect 3 x SainSmart 16-Channel Relay Module to an arduino mega board? GabrielC191 I have seen several posts regarding relay modules and arduino, but none specific about connecting this configuration.  I want to control 48 light bulbs with an arduino MEGA 2560 board. Can anyone help me with the requirements? I mean, I need to know whether I can connect those 3 relays modules (16 ...
By: GabrielC191

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Sat, 12 Nov 2016 07:13:34 PST
What read and write sequence should I be using to do more than cycle through a relay matrix. rccchappell I want to enter two values and those two relays to toggle 
By: rccchappell

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Thu, 10 Nov 2016 08:17:42 PST
which one is better nano aurdino or transistor? lachuviswan i am making maze rover (line follower) for the 1st time & i dont  know anything plz help me 
By: lachuviswan

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Wed, 9 Nov 2016 07:42:22 PST
My HID "Shield" doesen't work :(? Vincenzopaolo FlameE I follow this video: but with the same steps it doesen't work In windows 10 it doesen't works...device manager give me this error: Windows has stopped this device because it has reported problems. (Code 43) A request for the USB device descriptor failed. ...
By: Vincenzopaolo FlameE

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Tue, 8 Nov 2016 11:20:41 PST
Need coding to handle multiple relays with multiple touch sensor (TTP223), IR remote and from web for nodemcu ESP12E? KrishnaV35 Hey friends! Can anyone help me in designing a switch board which can be operated with touch sensors (TTP223), IR Remote and also with web application (like android / ios app) or with http:// . Coding for the same is my basic requirement. Basically i am looking for the coding. The things which i am ...
By: KrishnaV35

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Sat, 5 Nov 2016 07:26:06 PDT
how to run dc motor using keypad? AndrahyzertekosterA this is my code, i can't read the keypad input and turn it into pwm value ranging 0-255 #include const byte numRows= 4; //number of rows on the keypad const byte numCols= 3; //number of columns on the keypad //keymap defines the key pressed according to the row and columns just as appears on th...
By: AndrahyzertekosterA

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Fri, 4 Nov 2016 05:29:02 PDT
Analog and Digital inputs over serial? mvan h1 good day, question i am building a controller for my robot and i need to send the inputs(analog/digital) by xbee to my robot. now i am not good with programming i get stuck with the first line.... i want to know how i can program it to send it values over serial from xbee tot xbee on robot i didn...
By: mvan h1

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Mon, 24 Oct 2016 04:10:07 PDT
Arduino score board code question spikepickstock hi all. Ive been trying to work this out for a week and I'm guessing its a simple answer. Im building a score board, just LED modules (lights) instead of a 7 segment display There are two buttons, one for when each player scores a point. The led will work similar to a chaser but manually, each time ...
By: spikepickstock

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Fri, 21 Oct 2016 03:32:29 PDT
Arduino LED matrix scoreboard with buttons code? AntonE8 The project I want to make is an scoreboard for my Airhockey table that counts score with arcade buttons. I found some examples but have not anything that is exactly like I want to do. What I have bought is: Arduino Uno starter kit with all basic stuff and three 8x8 LED Matrix with MAX7219 drive. I ...
By: AntonE8

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Thu, 20 Oct 2016 13:51:20 PDT
Arduino WX code help for Weather Underground data upload? rwcwx Hello- I tried to recreate this WiFi Weather Station project using most of the same parts except for the Arduino WiFi101 shield.  I am having a problem with the data only being uploaded once.  The code tries again, but it seems the connection to WU fails after the first time.  I have to hit the res...
By: rwcwx

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Sat, 15 Oct 2016 10:01:59 PDT
How do you connect and code a servo controller module (8ch) with Arduino Uno? Fernando T Hello Everybody! hope everything is well... I want to start using a new servo controller module (8ch) which i recently bought, i tried to research how to use them but i could not find anything that went into enough depth or explanation of how to use it. What i'm saying is i don't know how to use or...
By: Fernando T

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Fri, 14 Oct 2016 05:19:29 PDT
I would like to shift a logic 1 though pins 10, 11, 12 and 13 by a pulse at pin 2 from button inputs. please help. nyama On an Aduino no I would like to make pin 2 an input. Pin 10, 11, 12 and 13 out puts which will go high then low in turn on subsequent pulses on pin 2. I want to drive 4 LEDs one after the other on and off. If I press and release button at pin 2, led 10 comes on. when I press the button the second t...
By: nyama

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Thu, 13 Oct 2016 19:15:48 PDT
Is it possible to use PWM on Arduino to control the voltage of an external power source? Shizen Let's say I want to vary the speed of the motor that operates at 12V. Since PWM on Arduino only provides the maximum current of 5V it can't power the motor sufficiently. So my question is how can I use PWM on Arduino to increase or decrease the input voltage of the external source? I will appreciate...
By: Shizen

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Sat, 8 Oct 2016 20:14:53 PDT
How To make a Robot that comes to you by pressing a button? Joel Spiteir Hi Guys, I was wondering if anyone one out there could help me.  I have an idea for a house hold robotic drink dispenser using Arduino. I want to create it so that when you press a control button it comes to your location without hitting walls and furniture. I was thinking using some form of IR tran...
By: Joel Spiteir

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Fri, 7 Oct 2016 19:27:40 PDT
Multiple RFM69HCW with the same Node ID? bigjohn412 I wan wondering if it was possible to have multiple RFM69HCW ( nodes with the same node ID on the same channel. My project I am doing involves a large amount of receivers and 1 transmitter in which I need all the nodes to receive the same message at the same tim...
By: bigjohn412

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Sun, 2 Oct 2016 17:08:49 PDT
How to take the project off of the arduino board? bpwmd So i have been looking for a long time for a way to "take the project off of the arduino board" (unsure what else to call it so that hampers my search) in order to reuse the board without buying a new one, or dissemble the old one each time i do a new project. Then i stumbled upon this instructable ...
By: bpwmd

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Mon, 26 Sep 2016 11:00:59 PDT
Control RFM69HCW with Adafruit's Pro Trinket 5v? bigjohn412 Hello, I'm having an issue controlling the RFM69HCW board ( with the Pro Trinket  5V ( The issue is when I go to compile an example code, the SPI class gives errors such as:  ...\Arduino15\packages\arduino\hardware\avr\1.6...
By: bigjohn412

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Tue, 20 Sep 2016 15:10:44 PDT
attiny85 tilt switch dc motor wesm4 hello my project consists of an attiny85 with an led a dc motor a tilt switch and  a button. the button changes the pwm values and the led goes to the same values to know the strength of pwm.  the tilt switch will activate the dc motor at the corresponding pwm speed based on how many times the butt...
By: wesm4

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Thu, 15 Sep 2016 14:14:39 PDT
I am using 4 servo motors operating on same arduino board.Power source I am using was 12V 2A adapter.Is it sufficient? ganesh27 Since a servo motor operating voltage is about 6v.Is it safe for motor to use 12V 2A adapter?Power for all 4 servo motors are is supplied from ardunio board.All 4 servo motors are connected in parallel. 
By: ganesh27

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Mon, 12 Sep 2016 09:19:04 PDT
how to download software and install? milomir i am trying to hack eeg force trainer toy with aurdino, computer and i have difficulty downloading software,caan somebody help me?
By: milomir

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Sun, 4 Sep 2016 10:54:52 PDT
Arduino DFPlayer MP3 player with Light sensor (LDR Module) as trigger GellertK Hi everyone :) Yet another question... So I got my self a DFPlayer mini (mp3 player module) for Arduino, and a nice tutorial on how make it work, but I want to use s Light sensor (LDR Module) instead of a button (I just need play and pause or stop for my gift box) So at the moment if I connect the...
By: GellertK

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Sun, 4 Sep 2016 02:06:58 PDT
Nrf24L01+ and Android Roberson JuniorF Hi, Is a simple way to communicate nrf24L01+ and Android Smartphone? Best,
By: Roberson JuniorF

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Fri, 2 Sep 2016 12:41:25 PDT
Unable to reverse direction of servo using arduino akshaydodkade I have arduino and a perfect code for moving servo to bidirection, but now i have facing problem of reversing the servo. I have replace three servos but having same problem. please help to detect is there is error in my arduino or servos?
By: akshaydodkade

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Fri, 2 Sep 2016 12:11:03 PDT
How do you build a decibel meter? MauricioA33 I'm triying to measure noise contamination on an airport runway, so i need values from 60DB - 160 DB. I only have found high sensitivity sensors. Any idea on how to build a less sesitive one?
By: MauricioA33

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Fri, 2 Sep 2016 11:43:02 PDT
Arduino pro micro RFID and servo NasrE1 I've successfully implemented Door Unlock system described in this tutorial. At first I used Arduino Uno and RFID RC522 Reader and MG90S Micro servo. When I used Arduino Uno with Arduino Pro Micro for arduino ATmega32U4 5V/16MHz, the RFID reader stops wirking after pluging the servo. Since Arduino ...
By: NasrE1

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Tue, 30 Aug 2016 10:07:28 PDT
need help : How to extract fingerprint image from Waveshare uart fingerprint using arduino ? AhmadQ8
By: AhmadQ8

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Sun, 28 Aug 2016 12:56:38 PDT
how to find t pin and ground on headset of force trainer toy? milomir i can not find t pin and ground on head set board of force trainer toy,can somebody help me?
By: milomir

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Wed, 24 Aug 2016 09:27:10 PDT
arduino error. exit status 1 expected unqualified-id before '<' token arduino ? paul the maker i'm tring to make a led light bar random number generator thing but my code is sadly not working and i do not nkow why pleae help here is the error message: exit status 1 expected unqualified-id before ' here is the code int LED0 = 2;int LED1 = 3; int LED2 = 4; int LED3 = 5; int LED4 = 6; int LED...
By: paul the maker

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Mon, 22 Aug 2016 01:11:32 PDT
Led strobe light? Chamburn Hello everyone, I came across a video on youtube where I found a light on a truck but don't know what it is called maybe strobe but I am not sure about this.  My ideas would be to use an IC 555 or use arduino to control the lights to achieve the same effects that the light is on the top of the red t...
By: Chamburn

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Sun, 21 Aug 2016 06:37:23 PDT
What is the maximum data of an mms that gsm can send? AmiruddinL I used SIM900A GSM/GPRS Module to send mms in my project. I want to know what is the maximum data that this gsm can send? And is there any other way to send more than the maximum data?
By: AmiruddinL

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Thu, 18 Aug 2016 11:26:07 PDT