11
votes
How to get HTTPS on Arduino?
(Disclaimer: I'm actually the author of the evothings.com article)
The Arduino UNO is more than capable at doing TLS. I've just finished up a blog post series on the topic. I have a working example of ...
- 111
5
votes
How to do with fzz file
Download and install the open-source, Fritzing CAD software for electronics hobbyist and open the .fzz file with that.
Versions are available for Linux, Mac, and Windows.
Installation instructions ...
- 1,032
5
votes
Accepted
Does the Arduino Yun have to be powered exactly at 5V?
It is fine. That is only 2% too high. The microcontroller is the ATmega32U4 and it can have 5.5V. The wifi module runs at 3.3V, and it has a voltage regulator. Some voltage is also lost in the cable. ...
- 3,208
4
votes
Accepted
Power Supply Problem with Arduino Yún: Using a long USB cable
The USB specification limits the length of a cable between two devices to 5 meters. When you make a longer cable, you're going out of spec, which means it is not guaranteed to work anymore.
Since you'...
- 1,258
4
votes
Are there any advantages to Wifi shields as opposed to a Yun?
There's a number of things to consider that could sway your choice one way or another:
Power consumption
The Uno is a small low-power chip to which you add WiFi. The Yun is an Arduino Leonardo with ...
- 104k
4
votes
Which Arduino is the most suitable for my project?
Both Mega 2560 and Due can handle 4 channels of 1,440 samples per second A-to-D and the least significant byte of the system time stamp sent as a continuous stream of vectors through the USB port to ...
- 274
3
votes
Convert a Serial string to a sketch command on Yun?
There is a third option: install an interpreter on the Arduino, then
just send it the program you want it to run. There are a few such
interpreters available. A quick search showed:
Bitlash, a C-like ...
- 40.2k
3
votes
What Arduino board with WiFi should I choose
I'd recommend ESP8266 (model 07) based board.
Can be programmed the same way as other Arduinos
Cheap
Enough storage for code
Fairly low power
Large community (more code examples and better library ...
- 624
3
votes
Accepted
easy_install pip on Arduino Yun fails
Found this Arduino Forum Thread helpful.
# wget \
https://pypi.python.org/packages/source/p/pip/pip-6.0.8.tar.gz#md5=2332e6f97e75ded3bddde0ced01dbda3\
--no-check-certificate
# easy_install pip-6.0....
- 179
3
votes
Accepted
Arduino - Push Button State Problem
you will need to implement a edge sensor. Add a previousTouchsensorState to the globals and replace the if where you check the sensor state with:
if(previousTouchsensorState == LOW && ...
- 3,277
2
votes
How can I get a unique ID for all my Arduino boards?
I doubt that the USB interface on the Uno gives you a unique serial number. Any number would be part of the code uploaded to the chip which would therefore be the same amongst multiple Unos.
One ...
- 36.4k
2
votes
How useful could the Arduino Yun be in computer vision in a robotics project?
For this application the Arduino YUN is the worst possible solution because
Low RAM
Terrible Processor
No storage (you can add a microSD card though)
High Cost
The raspberry Pi 2, UDOO, RADXA, Ordio,...
- 435
2
votes
How to make an arduino wifi repeater?
Get a very cheap module called ESP8266, particularly the ESP-01, then flash a program called esp_wifi_repeater (which uses the arduino IDE)
https://github.com/martin-ger/esp_wifi_repeater
I have ...
- 21
2
votes
Arduino for Wi-Fi hotspot?
Better use a regular router and flash DD-WRT or OpenWRT to it (check the supported router list on their websites). Next use something like NoCatSplash, to create a captive portal with login.
Arduino'...
- 11.2k
2
votes
Accepted
Does restarting Yún configuration mess up Arduino or its SD card?
It sounds like your SD card has likely failed. Try connecting it to a computer with an SD card reader. If it works at all, back it up immediately if you have files you wish to keep. Then try reading ...
- 373
2
votes
Accepted
How to copy files from Yun to local computer?
You simply reverse the arguments. Whatever you used to copy a file to the Yun you just do the opposite to copy from the Yun.
For instance, if you copied to the Yun using:
scp /my/local/file root@...
- 104k
2
votes
Should I buy a retired Arduino?
It is retired so will I have any problem?
It depends on what you want to do with your arduino. If you need a project that requires future support then dont buy a retired board. If you just want to do ...
- 384
2
votes
How do I program my Arduino Yun Shield when I keep getting this AVRDUDE error message?
Make sure the board selected in the Yun Shield is the correct one (in this case Arduino UNO).
Steps for selecting the board on the Yun Shield
In your web browser load the Yun Shield page and log in (...
- 136
2
votes
Arduino Yun Analog Read Problem
You are not reading from any analog pins. You are just printing out the digital pin number of the analog pin.
Look at some basic examples on how to read analog values.
/*
AnalogReadSerial
Reads ...
- 1,678
2
votes
Accepted
Stop Arduino Timer after some seconds
You set a timestamp = millis() when the button is pushed and then you disable the buzzer only when millis() - timestamp > timeout
if (touchsensorState == HIGH) {
// buzzer will emit sound:
...
- 3,277
2
votes
Accepted
Arduino Yun Disk Expander low memory but it looks like my memory is fine
I don't have a YUN or a lot of experience with OpenWRT, so I'm not sure I'm going to be of much help but, I'm guessing the error you're seeing is from this line of the sketch.
Excerpting that here:
...
- 4,729
2
votes
Accepted
Arduino Yun not getting response from Azure API
Found the problem, even though I set azure to accept http requests, it was still redirecting to https which the arduino couldn't handle. I've written a python script to offload the requests to the ...
- 31
1
vote
iterate through values in an array of strings to print
I think this is the correct way to create an array of C strings:
char * hvacSystems[] = {"Off", "Fan", "Cool", "Heat"};
int activeSystem = 0;
char * displayActiveSystem = hvacSystems[...
- 2,392
1
vote
Accepted
Difference between simple wifi transceiver and arduino yun
The nRF24L01+ modules aren't WiFi. They cannot talk to a WiFi router or the internet. They can only talk to other nRF24L01+ modules. They are good for connecting two or more UNOs together.
The Yún ...
- 104k
1
vote
Cloud function getting stopped Parse.com in loop when calling from Arduino-yun
Give this a shot, I really hate String, maybe that 8-times thing has to do with memory issues caused by it.
void loop() {
char functionToCall[8] = "meeting";
Serial.println("Start loop");
...
- 115
1
vote
Share data between the two processors of the Arduino Yun
The Yun makes communication between the microprocessor and the Linux side easy. On the Arduino side, use the Bridge library in your "processing script" to read (or write) Bridge values set by the ...
1
vote
Accepted
Share data between the two processors of the Arduino Yun
Given that my Python script printed the following
[10, 20, 30, 40]
This is the sketch I used to retrieve the array
#include <Bridge.h>
#include <Process.h>
void setup()
{
Bridge....
- 175
1
vote
Where do I get motion detector for ardruino that can actually be installed in ceiling?
This might not be quite the answer you were looking for, but...
3D print your case.
I expect you haven't got a 3D printer but you can find someone on 3D hubs to print it for you, and you might not ...
- 111
1
vote
Is there a good XMPP (Jabber) library for Arduino?
A quick search pulls up https://github.com/adamvr/XMPPArduino which hasn't been touched since it was first created five years ago, and may or may not work. XMPP is a very heavy protocol that is very ...
- 1,099
1
vote
Yun did not connect to WiFi after configuration and restart
My wireless config is in the /etc/config/wireless, not in the /etc/config/arduino
How do you configure your Wifi ?
There is at least 4 methods :
you can do this through OSJS, through LUCI, through ...
- 31
Only top scored, non community-wiki answers of a minimum length are eligible