All Questions
0
votes
0answers
2 views
Need help on HC05 and Nano
I am new to Arduino programming and currently working on this instructable
http://www.instructables.com/id/Control-Led-RGB/ (following this diagram ...
-7
votes
0answers
7 views
http://getmenshealth.com/maxtropin-and-testropin/
Than a motion picture star entering a shopping center :) But hold up! There's still more... In case you're a truly "genuine" man, who need to increase strong muscle to quit being the "thin" sort ... I ...
0
votes
2answers
23 views
ESP8266 - Error: unknown opcode or format name 'jmp'
I bought a nodeMCU 8266 and I'm hoping that it can replace my bulkier UNO+WiFi 101.
I'm getting an error when I compile:
Error: unknown opcode or format name 'jmp'
I'm using it in void SoftReset() ...
0
votes
1answer
13 views
How can I made my Arduino follow the time exactly?
I am making an Arduino clock. You can set time to it, and then it keeps on going. The problem is that it is always within a minute off. It is not a major issue, but one that I would like to fix. I use ...
0
votes
0answers
14 views
Program does not seem to be passing from setup to loop, or printing to sd card
I am trying to write code to test servo motors using an encoder. I create a file in the setup part, and then set 1500 microseconds to 0 for the encoder. However, if I try to print something to the SD ...
0
votes
0answers
7 views
Why does my 1602a LCD not display text with this code
#include <SPI.h>
#include <MFRC522.h>
#include <LiquidCrystal.h>
#include <Servo.h>
#define RST_PIN 9 // Configurable, see typical pin layout above
#define ...
0
votes
0answers
12 views
Arduino does not accept code, but serial interface and MCU work
first post here ;)
My Arduino UNO R3 broke yesterday after flashing it about 15 times. I did not have anything plugged into it, I was just flashing a sketch for reading a RFID module. I did not short ...
0
votes
0answers
30 views
How can I control 4 DC motors with an Arduino?
In a few months, I am planning to construct an Arduino robot with multiple sensors etc. I will use an arduino mega and a 4wd chassis like the one here: Chassis. The chassis uses 4 DC motors. I was ...
0
votes
0answers
4 views
Arduino sketch for I2C communication with Pi behaves differently with different IDE versions
I am trying to establish some basic communication between the Arduino and Raspberry Pi using I2C. The Pi is the master and the Arduino is the slave. I have observed that the Arduino sketch behaves ...
0
votes
0answers
6 views
Wired IoT sensor network with PoE?
Objective: Maybe I'm a bad Googler, but I am finding very little on wired Internet of Things sensor networks using Arduino.
Project Goals:
Arduino based sensor nodes that connect to the local ...
1
vote
0answers
8 views
Serial clock for SPI
I'm trying to configure my ADC(LM98725) registers through Arduino UNO via SPI but I'm facing a small problem, it would be great if somebody help me out. I have to configure my 16 bit ADC registers ...
0
votes
0answers
18 views
Two interrupts on arduino pro mini
I would like to know if it is possible to attach both interrupts on arduino pro mini to wake up from sleep?
Basically I want to connect two pir sensors to arduino to wake up it and send some data ...
0
votes
1answer
22 views
Arduino Mega different SPI Pins
I am working on a project that uses Arduino and Water Level Sensor MS5540C sensor that uses SPI to communicate with Arduino.
When I use Arduino UNO, it was working like a charm using pins 11, 12 and ...
0
votes
0answers
7 views
Arduino Websocket Client
I used this code to connect Arduino MKR1000 with API(server) using a websocket via WiFi.
#include <WiFi101.h>
#include <WebSocketClient.h>
const char* ssid = "********";
const ...
1
vote
1answer
21 views
how do you capture the top value in a fallen edge in analogs data (flex sensor)
Guys i'm working with a flex sensor and I'm trying to capture a specific value which is the moment before the user lets go of a flexed flex sensor and its represented as the top point of a falling ...
0
votes
2answers
14 views
Using only Rx pin to receive data from HC 05 and attiny85 (Arduino IDE)
I was building a Bluetooth car with attiny85 (Arduino IDE) and HC05 bluetooth module. I need 4 IO pins to control the car, since attiny have only 5IO's. I am left with only 1 pin to connect to HC05. I ...
0
votes
1answer
19 views
HTTP Requests using Arduino
I use this simple HTTP Post request to post some values on my API from Arduino using Switch. each time I push the switch it send a different values to API.
void switch_led() {
bool SwitchReading = ...
0
votes
2answers
27 views
Which relay should I use to control the power from mains?
I was making a home automation project in which I want to control appliances like a fan and a bulb through voice commands with the help of an arduino uno and a relay but I am confused which relay to ...
0
votes
1answer
7 views
Arduino Wireless SD Shield
Is it possible to use the Wireless SD shield without the wireless function, or XBEE Module? I do not need it to be wireless it simply was cheaper than any other I could find, so I was wondering if it ...
0
votes
2answers
27 views
Thermometer project shows fluctuation due to varying sensor value and voltage
I built this thermometer that reads the sensor value from the temperature sensor and displays it on the LCD display. It basically works fine, but the displayed temperature shows a fluctuation between ...
0
votes
1answer
27 views
How can i receive data from Mega2560 on PC with Visual C#
How can i receive the data from my Arduino Mega 2560 with Visual C# on my PC.
I send a short databyte (2 bytes) and a timestamp (4 bytes) over USB to PC
//initialization
const int RX = 0;
const int ...
0
votes
2answers
49 views
How can I make push buttons react to being pressed instantly?
I am making an Arduino alarm clock. I am checking for the state of a button. If it is clicked, I increment the button counter. If the counter is divisible by 2, it is mode 0, if not, it is mode 1. I ...
0
votes
0answers
17 views
Please suggest some projects with remote controlled relays [on hold]
I want to make a project with remote control relay but only project I find online is of making home appliances remote controlled. I am a beginner and unfamiliar to the ise of remote controlled relays, ...
0
votes
1answer
20 views
Getting POST data into a char array
I'm using Energia to program TI's CC3200 MCU. Since Energia is based off the Arduino IDE, I'm hoping someone can help me here.
I'm trying to get the CC3200 to act as a Webserver which when ...
2
votes
1answer
43 views
programming via ISP
A short question:
I wonder weather I can program an AVR chip (ATMega328, ATMega664, ATMega1284, ATTiny etc.) using the Arduino IDE, via ISP, without needing to bootload first.
Does programming via ...
0
votes
0answers
9 views
Sd card initialization failed HR911105A [duplicate]
This program worked Well but after a simple modification SD card initializing failed Shown . & ethernet shield HR911105 temp. is rising . Can anyone tell me either is there any kind of software ...
0
votes
0answers
11 views
SD card initializing failed
#include <SPI.h>
#include <SD.h>
File myFile;
int sensor0,sensor1,sensor2;
int delay_time;
boolean S1,S2,S3;
void setup() {
pinMode (10,INPUT);
pinMode (11,INPUT);
pinMode ...
1
vote
1answer
24 views
avrdude: ser_open(): can't set com-state for “\\.\COM2”
I have an unofficial arduino Uno.
I've tested these :
Testing on USB 2.0 and USB 3.0
Changing Port (COM XX)
Updating drivers for the Unknown device to Arduino Uno (COM XX)
Resetting ...
1
vote
1answer
11 views
how can i fix the error ? stk500v2_getsync(): timeout communicating with programmer
I bought this Chinese Arduino Mega 2560 16AU.
This was the first time to deal with Arduino boards. When I try to upload a sketch I always get this error:
stk500v2_getsync(): timeout communicating ...
2
votes
1answer
15 views
RC Car Hack Issue
I am trying to hack a cheap RC car as to be able to control it using my Arduino. I took apart the cars remote controller and found the pins that make it go forwards, backwards, left, and right. So I ...
3
votes
1answer
27 views
Why does my lcd screen work fine and then display random characters?
It works as expected for a few seconds and then random letters appear on the second row. The wiring and the programming should be correct. I wired it according to an Arduino Starter Kit Book and coded ...
1
vote
1answer
18 views
Why do I get “invalid operands of types 'const char*'” error?
I am making an Arduino alarm. This is the error:
exit status 1
invalid operands of types 'const char*' and 'const char [2]' to binary 'operator+'
Here is the code that triggers it:
...
1
vote
1answer
25 views
74HC595N shift register with separate power supply
I have wired up a 74HC595N with an Uno, and the standard 8 LEDs and resistors, per the usual youtube "shift register tutorial" and written a sketch that works. For example, I wrote a routine to walk ...
1
vote
1answer
18 views
Arduino Nano Update failure - avrdude: stk500_recv(): programmer is not responding
Before I tear all my hair and teeth out, can anyone please help. I have tried googling an answer and have not found anything.
My Setup:
Win7 64bit
Arduino 1.6.9 IDE freshly reinstalled
COM14 port ...
0
votes
0answers
4 views
HTTPS Client with MKR1000
I am making an IoT device with the MKR1000.
As a part of the process, I would like to set up an HTTPS connection to https://hit.tl8.co/api/ping (This is a website I have made and control).
The ...
3
votes
1answer
28 views
Setting Frequency of Timer Interrupt
still pretty new to AVR programming, I don't really understand what's going wrong here, and I don't know really how to solve it...
The Concept:
Play a sine wav saved as a char array in PROGMEM ...
1
vote
0answers
20 views
OBD2 VIN issue - Reading multiline response [on hold]
I have this AllPro OBD adapter and OBD2 simulator hooked up. And so far everything works great, except for the getting VIN.
When I run 0902\r command to get VIN number, I just get one raw as ...
0
votes
0answers
14 views
CC3000, How to find Client IP?
I have asked here, Arduino.cc forum, and Adafruit forum this question related to finding client ip using the Adafruit CC3000 Shield. Answer from TisteAndii here: Client IP seems to be on-track, only ...
0
votes
0answers
7 views
OBD2 Library for Arduino and DTC codes
I was experimenting little bit with this library, but I can't find any example how to read DTC codes with this?
Should I just use this plain sendCommand and send 03\r as command, and than convert ...
0
votes
0answers
7 views
Arduino: Sending SD CSV file online at specific time of the day
I intend to perform data logging from sensors and store it on SD card as CSV format. The data is related to weather and I would like to send it at the end of the day/
Any available codes how to deploy ...
1
vote
1answer
39 views
Difference bewteen Arduino IDE giving me headaches
For some time now I've been playing around with the latest version of Arduino IDE and my UNO and ATTiny with simple 433 RF links with the Manchester Library. It all worked fine, but for my next ...
1
vote
1answer
20 views
Can I connect a remote control relay to a arduino uno board by disabling the remote control in the relay?
I was making a home automation system by making some of the appliances in the home like fans and lights voice activated. But by mistake I bought a remote controlled relay in place of a normal relay ...
0
votes
1answer
23 views
Hooking up the Arduino to a car's 12v
I am planning an uno based tachometer for my truck, which doesn't have a tachometer. With nothing in place for me to get a reliable signal, I started looking at other sources to read the rpm from the ...
0
votes
7answers
74 views
How do you determine the clock speed of a microcontroller?
Really simple question. I'm using an ATtiny85 and an Arduino Mega and need to find out how quickly they can execute a commands. I couldn't find anything in the datasheet so I was wondering if there ...
0
votes
1answer
34 views
Arduino Uno - ESP 8266: sending AT commands via Code
I bought a ESP 8266 & I am able to send AT commands and receive response via serial monitor when I upload a empty sketch. I changed the baud rate from 115200 to 9600 by using AT+CIOBAUD=9600 and ...
0
votes
0answers
12 views
Minor questions on connecting a Nintendo 2DS to Arduino for control
Background
The Nintendo 2DS is a game system from nintendo that has a series of buttons on the front. Included are the Up, Down, Left, Right, A, B, X, Y, L, R, Start, Select and Home buttons. The ...
1
vote
1answer
41 views
MG2639 CELL AND GPS LIBRARIES
I'm using a MG2639 Cell Module with the SMS and GPS functionality.
I have a sketch that sends through SMS the location of the arduino UNO.
This is my code:
#include <SoftwareSerial.h> //to ...
0
votes
0answers
8 views
help: SETUP LCD TFT 3.5 IN?
icant setup lcd tft 3.5in( mcufriend) on arduino mega2560 ? you know arduino 1.6.7 has libraries such as UTFT & UTOUCH ... I JUST SEE A WHITE SCREEN( that is on ) when upload example on ...
0
votes
2answers
21 views
I2C multi sensors reading on Arduino
I have several sensors (Grove multichannel gas sensor, Air Pressure Sensor MPX4115A, Temperature and Humidity Sensor DHT11) where most of them uses I2C communication.
I wonder if it is possible to ...
2
votes
2answers
47 views
Can you access the EEPROM of an ATtiny with Arduino Code?
I'm attempting to reduce the amount of RAM being used by my program by writing some values to the EEPROM of my micro controller. I'm currently programming on the ATtiny85 which has 512 Bytes of ...
