All Questions
0
votes
1answer
19 views
Solar Power Inside a Car
I plan on making an Arduino project for reminding a parent to take a child from a car. In order to power the project I though on using a solar panel. Since I can't relay on having solar power all the ...
0
votes
1answer
13 views
Arduino sketch unexpected behaviour
I am currently in a arduino project to read some parameters from another microcontroller serially and the arduino is supposed to transmit these serially to dweet.io cloud. I use SIM900 modem for this. ...
0
votes
1answer
12 views
Arduino and A4988
I am new in Arduino area. What is necesary to have to control motors through arduino.
What is the difference between A4988 or Arduino motor shield?
For one stepper motor it's needed one A4988?
Or ...
0
votes
0answers
10 views
HM-10 arduino Bluetooth pairing with Android device
how to pair HM-10 arduino Bluetooth pairing with Android device ? when i tried to pair the bluetooth module with PC , it shows connected even though it didn't ask me to enter password, however when i ...
0
votes
1answer
20 views
Please explain this adafruit image for connecting a DS1307 RTC
https://learn.adafruit.com/assets/3813
I understand that analog 4 and 5 are SDA/SLC, isn't the picture also showing 5v and GND being plugged into two analog pins? Does that work?
I have it wired up ...
0
votes
2answers
15 views
ir sender detecting receiver and display
I am in a pickle and want to know if you can help me. I have an IR sensor and receiver and want a program that makes a light bulb flash or detect whenever the ir receiver is in range.
So whenever the ...
0
votes
1answer
9 views
Reading digital port with pullup via Firmata
I've got a weird issue, probably something I'm missing but have no clue what.
Got some simple float sensors connected to D2 - D5 on a Nano. Need internal pull-up to eliminate a floating value. Wrote ...
0
votes
0answers
19 views
SIM808 module : GSM location command (AT+CIPGSMLOC=1,1) giving wrong value after execution of sending message command(AT+CMGS=+91xxxxxxxx)
I wrote the code that if interrupt generated, get gsm location and send a message.
first time interrupt generated, got correct gsm location using (AT+CIPGSMLOC=1,1) and successfully send message ...
0
votes
1answer
21 views
OTA Update Esp8266 without IDE
I was wondering if its possible to program the esp8266 to receive firmware updates without the use of an IDE to program.
Use Case:
This device should be setup to the WiFi network scan an IP for a ...
0
votes
1answer
19 views
Arduino-like ethernet only board?
I don't think USB chip is more expensive than Ethernet chip. So, I expect there should exist a board like Arduino, but where USB is removed in favour of Ethernet.
Are there such boards?
0
votes
2answers
26 views
Follow up question to Calling a timer when a button is pushed
I have changed the code with some help here. There are two buttons each one is set to turn on a LED. When the LED turns on it is timed and when the time is up it turns off. The problem I am having is ...
0
votes
1answer
15 views
How to use Aiduino module to connect to computer network?
I have 4 usb Hard Drives and I just want to connect them to computer network directly without a traditional computer. Is there an any module with 4 usb ports and one RJ45 port. The module should able ...
0
votes
0answers
13 views
Telit GPRS Module never returning and never timing out for command AT#FTPOPEN
Howdie! I trying to run a GPRS modem on an Arduino. My full stack is Nimbelink's NL-SW-GPRS Modem (containing Telit GE910-QUAD GPRS module) with the Nimbelink Arduino Development Shield on an Arduino ...
0
votes
2answers
22 views
How to connect ESP8266 12e directly to Arduino Uno (without shields)
I have an ESP8266 12E module and I'm trying to connect it to arduino, without any shields or whatsoever. I've looked everywhere but all I can find is about ESP-01 or with a NodeMCU. I'd like to do the ...
0
votes
0answers
26 views
Limited to 1MP still captures with OV5642 ArduCam Mini + Arduino Uno
I have an Arducam-Mini-5MP with Arduino UNO R3. I am running the unaltered example ArduCAM_Mini_OV5642_Video_Streaming to the arduino and am running ArduCAM_host_v1.0.exe on my PC with huge successes.
...
0
votes
1answer
24 views
Constantly read analog in in SWITCH/CASE setup
I'm writing a program with three different cases. Case one an LED is off, in another it is on and in the last case the brightness is controlled by a potentiometer. Each case works as I press the ...
0
votes
0answers
19 views
ESP01 (esp8266) controlling relay problem
I am trying to control relay (SRD-03VDC-SL-C) with ESP-01 module. For this I am using relay and not whole board with relay. ESP's GPIO2 (tried also with GPIO0) output is connected through 1kOhm ...
0
votes
0answers
3 views
Wifly Library that works with RN171
Does anyone know of a library that works with the WiFly-RN171?
I've tried all that I could find (WiFly, WiFlyHQ and WiFlySerial) but none of them work.
WiFly and WiFlySerial both hang on WiFly.begin()...
0
votes
4answers
64 views
Can I make so when I press a button on my Arduino Uno board, it will press a key on my computer?
I looked up the question before, but they only gave answers for boards that are not the Uno. Is there any way to make it so when I press a button on my board, it registers as a key press on my ...
0
votes
0answers
16 views
read and write on the same node (central) using the RF24Network on arduino
I want to send and receive on the same node using the RF24Network library, but i'm unable even when i use radio.StopListening().
Here is the code
#include <RF24Network.h>
#include <...
1
vote
2answers
105 views
Manually Declare Global Variable
Is it possible to manually declare a global variable that is inside of a function. The only current way I know how to do so is to declare that variable within the setup() function or simply outside of ...
1
vote
0answers
26 views
Udp.remoteIP() and Udp.remotePort() calls not working
I'm trying to conect an Intel Galileo over ethernet. I'm using the code located in Examples/Ethernet/UDPSendReceiveString. Everything works fine except for the response. Udp.remoteIP() always return ...
0
votes
2answers
33 views
calling a timer when a button is pushed
I'm trying to call a function to keep an LED on for a certain amount of time. The function is called when the button is pushed but the LED stays on. I used the same code in the void loop before moving ...
-1
votes
1answer
20 views
Best way to read CSV from SD card and store values by date
I am starting a project in Arduino and I need to read data from an CSV stored in an SD card. The data is stored as the following:
id, value, date
What I want to do is read the file, filter by date ...
0
votes
1answer
21 views
Sending data via SoftwareSerial results in garbled reception
My overall goal is to have an Arduino Uno with an Ethernet Shield send a short (5-character) string via a SoftwareSerial connection and a UDP packet when I press a button.
The device which is ...
0
votes
1answer
32 views
What does 16u and 128u mean?
The below is a snippet of a code for operating SI4455 Rf module with Arduino. I have some doubts which I'd like to seek some help in clearing.
byte numOfBytes = *pSetPropCmd++;
if (numOfBytes &...
0
votes
1answer
24 views
How to convert char[] to int with fail\success control?
this is more like C question, but i failed to google this.
i expect a command parameter in char[], but there may be no argument passed at all, so i need to try to parse this char[] to int and if ...
0
votes
1answer
20 views
Servo Speed Changer with Buttons
ok so yesterday i was in trouble with the buttons, with help from you i got over it and everything worked fine with the 1st speed of the servo, then i added the other 2 speeds and it looks like it all ...
0
votes
0answers
14 views
Ublox Neo 6M GPS module problems
So I bought this GPS module to use with my Arduino Nano. When I first powered it on and run TinyGPS++ DeviceExample.ino, I wasn't getting any data so I changed GPSbaud to 9600 and then I started to ...
0
votes
1answer
32 views
Arduino uno unexpected void loop stop
I have a trouble with following, few lines code.
For some reason after few seconds Arduino uno stops responding into void loop section of code.
I tried to remove serial communication, all print and ...
0
votes
1answer
25 views
SIM808 module GSM working fine,GPS not working (No GPS ready message on power on)
I powered on my SIM808 module. It showed me following output
RDY
+CFUN: 1
+CPIN: READY
Call Ready
SMS Ready
It supposed to show "GPS ready also"
I sent AT command and return ok.
but AT+CGPSPWR=? ...
0
votes
1answer
11 views
How do you change the state of an image on a TFT display when the associated pin changes state?
I just recently resolved my problem on getting images to load on to my TFT display via the SD card. Thanks to UTFT_SdRaw!!! it's by far the easiest to use. For a novice like me, its been a real feat. ...
0
votes
0answers
19 views
incorrect servo angle
I am making an arduino code to control a servo motor , arduino will receive data from matlab ( the angle from 0 to 180) , this is the code
#include <Servo.h>
int servoPin = 9;
int num;
Servo ...
0
votes
1answer
19 views
How to detect cancelled download?
I have a server with files that may be downloaded.
How do I go about detecting when a download is cancelled by a client?
The function that handles reading files for download:
void readFile()
{
...
0
votes
0answers
26 views
Chinese CH340 Arduino Uno - Burning stand allone chip
I followed regular tutorial and I was able to burn boot-loader on my standalone ATM328 chip, but because I'm using this CH340 UNO and example is with regular UNO, I can't just remove the chip from ...
0
votes
1answer
29 views
Do I need resistors or capacitors on this relay?
I'm using my Arduino to control a relay switch, which has an extension cord attached to it (see photo).
The relay is connected to the Arduino via pin 9, which is set to pinMode(9, OUTPUT);
Do I need ...
0
votes
1answer
18 views
Neopixel Painter - Need to change few lines. Not sure where to start
My name is Maria and I'm learning programing in high school.
I'm working on a birthday present for my mom, want to make a mood light. Using light painter, a neopixel strip, and an arduino.
https://...
0
votes
1answer
20 views
Arduino due + mcp2551
I am currently using an atmega328 along with the mcp 2515 and the 2551 for CAN communication in my systems.
However, I've now decided to upgrade to the arduino due for my operations. Can anybody tell ...
0
votes
1answer
38 views
Custom ATMega 2560 board won't execute Arduino code
I have a custom PCB with an ATMega 2560 microcontroller on it. To test if the ATMega was working properly, I uploaded the following code:
void setup() {
Serial.begin(9600);
Serial.println("Test ...
0
votes
3answers
14 views
VGAX library only allows 4 colors, library or hardware limitation?
Im working with VGA DSUB-15 output, however VGAX only allows for 4 colors. Im using an arduino nano that uses an 8-bit atmel chip, and ive seen many 8-bit computers of which have a bit more than 4 ...
0
votes
2answers
21 views
Arduino wait for change in value
I am currently working on a project that involves steering wheels, and I would like a way for Arduino to wait for a change in value. A potentiometer is used and I would like a program to run (say, ...
0
votes
0answers
12 views
Nema 17 running at 6V DRV8834
Helo I am running SM-42BYG011-Nema 17(https://www.sparkfun.com/datasheets/Robotics/SM-42BYG011-25.pdf) using DRV 8834 at 6V supply whereas datasheet says 12 V.this is to save motor from over heating ...
0
votes
1answer
14 views
Getting "Undefined reference to vtable for {classname}
I have a large collection of libraries that compile correctly but won't link. I am using Visual Micro for Visual Studio 2015. Here is the complete collection of error messages:
CommandPattern3.cpp.o:...
0
votes
0answers
8 views
Adding libraries to processing IDE
I'm trying to add the library "procontroll" to Processing IDE but it doesn't work out...
I want a link to that library and how to add it correctly.
0
votes
1answer
21 views
How do I connect components to the Arduino with a motorshield?
How would I connect components to the Arduino with this motor shield?
Thanks :)
0
votes
2answers
20 views
arduino ethernet run php from sd card
I am just interested, but I would like to run a webpage with php on my arduino ethernet. I would like to be able to store my webpage on the sd card as well.
does anyone know of a library that would ...
0
votes
1answer
19 views
Missing Libraries make no sense
I've never much issue importing a library to my master sketchbook location, restarting Arduino, then using the library examples. Today is a different story:
I'm loading RCLib which is part of this ...
0
votes
1answer
17 views
Is Sparkfun's MicroView OLED Arduino module a shield?
I'm getting confused by the Arduino terminologies: shield, breakout, module.
Is this MicroView an Arduino compatible shield that will plug into Arduino's or Adafruit's Uno?
0
votes
1answer
17 views
Listen for USB “TX signal received” response on RX
Is there a usb signal I can send on TX that will generate a response from the computer on the RX only if the computer is active/not a wall usb power supply? I'm trying to use the Remote library when a ...
0
votes
0answers
26 views
Button used to add or substract from “x”
I'm using an Arduino UNO and im trying to make with 2 push buttons 3 diffrent speeds for a motor. I started with the base code for the buttons and then im gonna add the motor but i kinda got in a bit ...
