Unanswered Questions
5
votes
1answer
133 views
Is there a way to detect if Arduino, Stino or another IDE/toolchain is in use?
I've noticed some irritating differences between the Arduino IDE and Stino (mainly around including certain header files). These are likely bugs that need following up with one or both of the parties, ...
4
votes
0answers
88 views
SPI arduino due conflict with pinMode(), bug?
Consider the following minimal example, where I set pinMode before calling SPI functions:
#include <SPI.h>
void setup()
{
pinMode(10, OUTPUT);
SPI.begin(10);
...
4
votes
1answer
184 views
RFID/NFC (13.56 MHz), is it possible to send raw bytes and receive response?
I'm trying to implement a card reader (i.e. credit cards) for shopping purposes, and AFAIK those cards are ISO 14443-A compliant (Mifare Classic 1K). I already made an Android app that can send custom ...
3
votes
0answers
100 views
Arduino Digital Input Causing Output Problems
I am working on a simple project using an Arduino Mega 2560 that involves reading a 12-bit binary encoder signal and which is used to cycle a digital pin high and low (depending on the angular ...
2
votes
0answers
30 views
Why is the atmega chip reset three times during programming?
I'm trying to understand the auto reset process and why a capacitor hooked up between DTR and Reset works so I ran it through my logic analyzer and I'm seeing the chip reset three times during the ...
2
votes
1answer
71 views
I²C between ATTiny85 (8MHz) and Arduino Uno
I keep receiving the following error in myATTiny85-Slave code below:
sketch_mar12a.ino: In function 'void setup()':
sketch_mar12a:19: error: 'class USI_TWI_S' has no member named 'onRequest'
...
2
votes
1answer
33 views
Continuous Servo not setting speed correctly
I have two continuous servos connected to my Uno, and I'm running this code on it:
leftServo.write(91);
rightServo.write(102);
delay(3000);
leftServo.write(112);
rightServo.write(81);
delay(3000);
...
2
votes
2answers
45 views
Loading local libarries
I'm new to Arduino/C development (coming from a JavaScript/Ruby environment), but I was wondering if it was possible to include a library from a custom folder within a sketch?
So this is my ...
2
votes
0answers
40 views
Unable to alter SPI speed on Arduino Micro
I am using SPI to communicate with a IMU device which is working perfectly, except the SPISpeed which is not being altered as it should:
unsigned int m_SPISpeed = 400000;
SPI.begin();
...
2
votes
0answers
65 views
Unstable system when controlling power to serial peripheral devices and sleeping
In the process of trying to make a small system that will last a while on 4 AA batteries, I've reduced my Arduino project to a barebones system that when asleep draws a tiny amount of current from the ...
2
votes
1answer
100 views
US-100 Ultrasound sensor doesn't work on Arduino mega 2560
Im using a Arduino Mega 2560, and I tried to connect a us-100 ultrasonic sensor for distance measurement.
I connected it as shown in the image
The code I used was:
const int trigger=6;
const int ...
2
votes
0answers
59 views
Ambiguity in Software Serial
HW:
2 Arduino ProMini 16Mhz, 5V
Software serial directly connected using male jumpers on bredboard.
I have creates a software serial port for communication between two arduinos, Parent and child
as ...
2
votes
2answers
763 views
Sainsmart LCD 2004 - LiquidCrytal_I2C library issue unable to compile
I bought a Sainsmart LCD2004 from Amazon to use with my Arduino Uno.
I understand that since this LCD uses I2C a new library needs to be downloaded.
From the sainsmart website I dowloaded the LCD ...
2
votes
3answers
651 views
How to eliminate noise from PWM controlled 12V fan at low speed
I am trying to build a simple fan controller (single fan). So far I have successfully created a circuit which powers the fan with an external 12v DC adapter and added a transistor (NPN) to switch it ...
2
votes
3answers
491 views
Can I control analog IO pins using Yun Linux
2 days back I bought Arduino Yun. I'm able to flash Led on 13 pin. And I'm able to flash Led on Bread board connected to A0. I'm able to run linux commands.
Now I want control A0 pin using ...
