All Questions
0
votes
0answers
3 views
Digital Vs. Analog Sensor
Background: I'm using an Atmega1284P to add sensors to an off road racing truck onto a CANBUS network. The standard automotive sensors are thermistors, but the Dallas 1 wire temp sensors (DS18B20) ...
0
votes
0answers
5 views
Problem receiving data from RPi to Arduino via serial
Our team has been trying to send data over from RPi to Arduino but there are some weird things happening:
If we open the serial monitor of arduino on RPi itself, the serial data is sent by RPi and ...
2
votes
0answers
7 views
Arduino Yun Current Date & Time To Firebase
I am working on a sketch where the current time and date is posted to Firebase when motion is detected by a PIR motion sensor. Currently nothing is being posted to Firebase when I run the sketch also ...
0
votes
1answer
7 views
Possible to use the hardware serial port for peripheral on ATmega32u4 when using USB for programming?
I have a Arduino Pro Micro and use the USB port for programming. Is it possible to use the hardware serial port for connecting with a peripheral while I'm using the USB port (and hence the hardware ...
0
votes
1answer
8 views
Arduino serial port eats data for 3 seconds before it sends?
With the source code below, I'm getting what I think to be strange behaviour with the serial port output.
void setup() {
Serial.begin(9600);
}
int c = 0;
void loop() {
Serial.println(c++);
}
...
-1
votes
0answers
21 views
Arduino displaying same temperature over and over again
I'm new to Arduino so im still getting used to it...ineed to read the temperature of temperature sensor in arduino. Whatever i do, it keeps displaying same temperature(don't even know if that's wrong, ...
0
votes
1answer
12 views
Why is the result of this product operation wrong?
I had a problem in a program where the result of product is not what it's supposed to be. For example: 775*775 gives 10801 instead of 6006025.
To try to isolate and resolve the problem, I made a ...
1
vote
1answer
13 views
Issues with AltSoftSerial
I have my arduino connected to my PC and another serial device.
This serial device sends a 3 line piece of info on bootup then if I trip a zone it will send information regarding the radio ...
0
votes
1answer
15 views
See compiled assembly output (Visual Micro)
I'm curious about what some of my code is being compiled into, is there a way to have the compiler save the intermediate assembly files, ideally somewhere in the project folder? I read some forum ...
1
vote
1answer
14 views
Power Arduino Nano with OTG cable
I have a project that I am putting an arduino nano in an enclosed box that will light leds in a pattern. I am planning to power it with a 5v power brick but I would like to build a way a update the ...
1
vote
1answer
28 views
Arduino serial hex decimal values code
I'm trying to send heximal values from arduino to PZEM-04 power module (it shows voltage, current and ect.) over serial communication in heximal format and get values in decimal format for further ...
1
vote
1answer
27 views
Trying to pass a char to software serial with a button press
Good day everyone,
I'm returning to the Arduino world after my a 3 year hiatus following the birth of my son.
I'm trying to push a button connected to pin 2 and have that send a 'd' to SoftwareSerial ...
0
votes
1answer
32 views
How to use strtok() and strstr() with arduino?
Can anyone explain how things like strtok() and strstr() can be used to provide a numeric value for a substring location position within the mainstring array.
I've tried to understand from the C++ ...
0
votes
1answer
6 views
How to know if my Bluetooth HC-05 is connected through serial monitor
I want to connect a Bluetooth module to arduino and check if my module is connected or not.. Through serial monitor. Is there and particular code to connect with that?
1
vote
2answers
39 views
“'Serial' does not name a type” error
I'm getting a "'Serial' does not name a type" error when this program is compiled. I need for the 8 channels of voltage to be displayed. I'm sure it's a simple fix, however I'm still learning Arduino ...
0
votes
1answer
15 views
Bluetooth HC-05 Library for Proteus
I m working on a project in which I am using HC04 module so can anyone give me any Arduino Library for Proteus which have HC05 in it. Or tell me how to use HC05 in Proteus.
Thanks.
3
votes
4answers
45 views
Breadboard for kids
I am interested in teaching young kids how to build arduino projects. I was thinking that using a breadboard may be difficult for them, as the holes are all very close together. It is easy to put the ...
0
votes
1answer
12 views
Help with a rather specific implementation of FFT Library?
So, I guess what I'm trying to do here is properly understand the FFT library posted here by Open Music Labs, done in C++. I believe I understand the Fourier transform, but the FFT has some nuance ...
1
vote
1answer
18 views
SD card initialization fails randomly
I have a SD card reader that is working fine exept that sometimes SD.begin fails for no apparent reason.
To work around this issue I have put the SD.begin in a while loop and then I display the error ...
0
votes
0answers
18 views
Help with MPU6050
I bought an MPU6050 and it doesn't seem to be working properly. When I run the example sketch to read the raw values, they all seem to be garbage and fluctuate rapidly even when it is sitting still, ...
0
votes
2answers
22 views
MPU 6050 stuck on same values
I'm having a problem with my MPU6050. I'm using PID to speed up a motor with the MPU values. What could the problem be?
Here is a link to a previous question that I asked concerning a problem with ...
3
votes
1answer
28 views
MicroSD interfering with ISP programming
I have a microSD connected to an Arduino and I can't program it over ISP without removing the SD card. Does anybody know how to prevent the SD card from interfering with the ISP programming?
Details:
...
1
vote
1answer
26 views
Custom built Arduino is not working - double blinks
I've made a home-made Arduino based on this video. The problem is that I can't upload anything, it doesn't react, only the LED double blinks in every second. What does that mean? How to fix it? ...
0
votes
0answers
9 views
What are the components of a Xively HTTP PUT request to send to my SIM800 GPRS module?
I have an Elecrow GPRS shield which I want to use to post temperatures from 3 x DS18B20s to Xively. The example code is a mystery to me. You can find in full at this link: ...
0
votes
0answers
12 views
Board won't show on one of my computers
I have the same problem with these two boards: Ruggeduino (Uno compatible) and DFRobot Romeo 1 (Duemilanove compatible). On one of my Macs (a Macbook Pro running 10.11.4), I can see a new port ...
0
votes
0answers
6 views
Why Arduino GSM & GPS & SD module not working together?
I've connected the SD module and GPS module on Arduino UNO, to save GPS cordinate in SD module and it works great. after that , i disconnect theme and connect the GSM Shield to Arduino and it works ...
0
votes
0answers
38 views
Is my Arduino mega dead?
I accidentally short-circuited my Arduino mega(ended up connecting the 5V and ground pins). Physically from observation nothing seems to be burnt on the board but I am not able to upload new codes to ...
-1
votes
1answer
8 views
Can not connect with Bluetooth hc-05
I connect my Bluetooth hc-05. But the blind led in the Bluetooth module is not stable when I connect with my Android phone. Help help me to solve this.
-2
votes
0answers
21 views
cooking hacks Blood pressure [on hold]
anyone who used the cooking hacks blood pressure?
I want to gather the data from the BP to VB.net but the problem i cant get the latest data from the bp.. I can only get the latest by opening the ...
-2
votes
0answers
15 views
proplem in function [on hold]
Where latrx and lonrx are the latitude and longitude of the receiver. lonsat is the longitude of the satellite.
And this is the equation used to calculate the elevation of the receiving antenna ...
0
votes
4answers
66 views
How to pad an ascii number with leading zeros?
I need to include a 3 digit ascii representation of message length number in the message header, but I am having difficulty trying to pad the number with leading '0' zeros in order to keep the number ...
0
votes
0answers
10 views
Arduino Pro Mini with multiple SoftwareSerial objects
I've a "little" problem with a couple of devices on a Arduino Pro Mini.
I use these devices (Sim800L GSM and Adafruit GPS shields) throught 2 SoftwareSerial objects; individually they works fine, ...
3
votes
1answer
17 views
Why isn't there bus contention on the MISO line during SPI-based programming?
Consider this image from sparkfun:
Let's say I have this setup, a master and n slaves, plus a programmer connected to the SPI lines.
When I program the master (Arduino), the Arduino is reset. This ...
1
vote
3answers
31 views
Integration of signal
In my house, I have a low voltage AC signal (0-10V) that is proportional to the amount of current that is drawn at any moment (or as it is presented: kW) (europe, 50Hz). Presently, it is just shown as ...
0
votes
0answers
23 views
ESP8266 (Wi-Fi Module) interfacing with PIC 16F or 18F microcontroller
Has anyone interface PIC16f877A or PIC18f4520 or any other PIC microcontroller with wifi ESP8266 Module, need some sample code to send and hit url using TCP connection command.
My hardware part is ...
1
vote
1answer
19 views
help compiling code for flora project
I'm working on the Adafruit Firewalker shoes.
I can't make my code compile to test my flora project.
This is my error message:
Arduino: 1.6.7 (Windows 10), Board: "Adafruit Flora"
...
0
votes
0answers
19 views
Arduino is not responding to a Tiny RTC I2C modules, How to fix?
We have an arduino due with a Tiny RTC I2C module and we're trying to print the current time to the serial monitor. However its not working, currently its printing the time as 2165/165/165 (Monday) ...
0
votes
1answer
15 views
How do I install the latest Arduino IDE on Ubuntu 14.04LTS? [duplicate]
I downloaded the package for 1.6.7 on Ubuntu 14.04LTS but when I open it no matter what I try it will not come up... all I can get is 1.0.5 from the Ubuntu Software Center... I have looked online for ...
-1
votes
1answer
27 views
Arduino vs Raspberry, Advantages And Disadvantes [on hold]
I have done extensive research into the differences and here are the questions i have:
What is a micro controller and what differs it from the raspberry pi system
Why buy the Arduino when it is less ...
0
votes
1answer
19 views
How do I adjust the scale/calibration of a photoresistor?
This photoresistor has a min/max of 0-1023.
I'm trying to scale the brightness of a cathode RGB LED based on the sensor's value, but based on my current lighting, the min/max readings I generally am ...
0
votes
0answers
17 views
Audio Player picking up Interference
I'm working on an audio player project, I can get the audio to play fine but I'm getting tons of interference. Using a PAM8403, power is to 3.3V on Arduino, GND to GND and D9 to Left In. Heaps of ...
1
vote
3answers
54 views
Adding button which resets to top of void
I'm quite new to Arduino and the programming of the board, but I wanted to have a go at making a traffic light based on an example I found online.
The example supplied a simple layout which I roughly ...
0
votes
0answers
8 views
Is it possible to calculate distance with the HC-06 bluetooth module without having BLE support?
I have a HC-06 bluetooth module and I want to make a project that constantly calculates the distance from an android phone. Is this somehow possible without having a bluetooth 4.0 module?
1
vote
1answer
35 views
ESP8266 shows garbage in serial monitor
I have my ESP8266 connected via serial to USB like the image shows:
It worked just fine, however, when I tried flashing Blynk code
#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
...
0
votes
0answers
5 views
Programmer is not responding [duplicate]
I can't upload my sketch to uno. It shows an error saying avrdude: stk500_recv(): programmer is not responding... Can you help me to solve this. I'm using it for the first time. I reset my board but ...
1
vote
1answer
29 views
Neopixel Ring - How to breathe in a circle motion?
I'm trying to get an effect like (https://vine.co/v/Mwwbi5a1BFK) using a neopixel ring. I can get the neopixels to turn on and off in a circle motion and I can get the neopixels to fade all at once. ...
1
vote
1answer
30 views
error while loading libtinfo.so.5
I just installed the 1.6.7 version and want to upload it a sketch to Arduino UNO hardware. I get error message: /home/pali/Irataim/TarBalls/Arduino/arduino-1.6.7/hardware/tools/avr/bin/avrdude: error ...
3
votes
1answer
46 views
How do I calibrate an ESC after connecting it to an Arduino?
I'm trying to connect an Arduino to an Electronic Speed Control and failing horribly. I'll explain what I've done so far, and then I'll explain the problem.
Before we get there, here's the list of ...
0
votes
2answers
33 views
Fritzing PCB design review/questions
I've designed an PCB and due tot the delivery times, I kinda want to order it right now.
I don't yet have the components, so I haven't actually tried it on a breadboard.
Now I'm unsure if the PCB ...
1
vote
1answer
32 views
Sim800L HTTP post request stop working after a while
I am desperate to get my SIM800L module (http://www.ebay.co.uk/itm/SIM800L-GPRS-GSM-Module-Board-Quadband-QUAD-BAND-Antenna-for-MCU-Arduino-/321992759287) sending POST requests for a long period of ...
