13
votes
Access serial monitor on linux cli? Using arduino-cli?
Programs such as screen, minicom or (my favorite)
picocom are useful if you want bidirectional communication
between the Arduino and the host computer. If you only want to read
what the Arduino sends, ...
- 43.9k
10
votes
When Raspberry Pi is preferred over Arduino
The claim that the Pi is more "powerful" is a bit misleading. What does "powerful" really mean? And is it relevant to making a weather station?
I made a temperature and humidity sensor as described ...
- 38.6k
10
votes
Accepted
How to allow cross-domain requests on ESP8266WebServer
Add the CORS header to every response, not only for 'preflight' OPTIONS request. The OPTIONS support is optional, but the response returning the 'shared resource' must contain the CORS header
"...
- 18.1k
8
votes
Access serial monitor on linux cli? Using arduino-cli?
I use minicom.
$ sudo apt-get install minicom
... blah blah blah ...
$ minicom -D /dev/ttyACM0 -b 115200
Minicom can take a bit of getting used to. Use CTRL-A to initiate a command sequence. CTRL-A X ...
- 105k
7
votes
Accepted
When Raspberry Pi is preferred over Arduino
Somewhat of an opinionated question but I'll give some feedback. It depends on various things:
How much UX and UI you want to give to your client
How easily can you program it
Which is a cheaper ...
- 186
6
votes
Accepted
Differences between Arduino IDE versions
Debian is always somewhat behind the latest software
No, when it comes to the Arduino IDE Debian is frozen on an ancient version.
1.0.5 is considered to be too old to use. Many many things have ...
- 105k
6
votes
When Raspberry Pi is preferred over Arduino
As opposed to the Arduino boards, the Raspberry Pi is a single-board computer with a quad-core CPU, a GPU, on-board RAM, and many peripherals. The main difference between the Pi and the Arduino (or ...
- 161
6
votes
Accepted
Greyed out port for Raspberry pico in Arduino IDE - Ubuntu 20.04
I've come across this and this is how I worked around it (on Windows, but I suspect the problem and solution is the same).
A brand new Pico or one not programmed by the Arduino IDE does not have a ...
- 791
6
votes
Why do I have to burn the code to make it run?
On a Unix shell, separating commands with the pipe character (|) means
“run these commands in parallel, feeding the standard output of each one
to the standard input of next one”.
In this context, it ...
- 43.9k
5
votes
MQTT over serial
As the author of the serial2mqtt gateway. Maybe it's time to have a new look. I've included the binaries for different platforms in the build : https://github.com/vortex314/serial2mqtt/tree/master/...
- 51
5
votes
Accepted
Convert float to byte, from Arduino to Raspberry Pi i2c
First of all, if you want the Arduino to send data as a slave, it should
do so onRequest(), not onReceive(). Thus:
void setup() {
Wire.begin(0x08);
Wire.onRequest(handleRequest);
}
Next, as ...
- 43.9k
4
votes
Accepted
Rounding up and Down
As far as I know, the Serial.print (or println) does rounding up and down. All you have to do is take a float variable and do Serial.print( value, 1);
Without extra parameter, the default is choosen, ...
- 3,246
4
votes
Rounding up and Down
You can round in C by multiplying for the significance, adding +0.5, round down (equals as casting to an integer) and divide.
float f_rounded = ((int) (f * 10.0 + 0.5) / 10.0);
28.6 will be:
float ...
- 13k
4
votes
Accepted
Why would anyone use Arduino in 2017?
This is the ATtiny.
It costs < $1 and is completely capable of most tasks that a hobbyist requires of a chip. Truthfully, it’s more than capable of many tasks a pro requires as well. It’s perfect ...
- 332
4
votes
How to allow cross-domain requests on ESP8266WebServer
just add this line before every response:
server.sendHeader("Access-Control-Allow-Origin", "*");
- 141
4
votes
How to allow cross-domain requests on ESP8266WebServer
server.enableCORS(true);
The server will add the response Access-Control-Allow-Origin=* header
- 41
4
votes
Accepted
Sending data struct with 2 int fields from Arduino to Raspberry via NRF24L01
Your problem is that you are communicating between an 8-bit and a 32-bit architecture.
On an 8-bit architecture int is 16 bits. On a 32-bit it's 32 bits. Why the difference? Because "it is". ...
- 105k
3
votes
Capacitor Questions
Every active chip should have adequate decoupling. That is the point of C3, to provide decoupling for the MCU. It is required.
While you don't need capacitors on the output of a non-existent ...
- 105k
3
votes
Accepted
A1 was not declared in the scope
RobotConfig.h needs to include Arduino.h in order to have those constants.
- 3,377
3
votes
ADC with better performance
ADS7835 from Texas Instrument.
can be interfaced with Arduino Mega or Raspberry Pi
It is interfaced through SPI, 12 bit data, and up to 500kHz throughput rate.
- 1,258
3
votes
Power a Raspberry Pi 3 from an Arduino Uno
You can't.
The on-board regulator of the Uno, the NCP1117, is only able to supply up to 1A before starting to dropout voltage (hence your undervoltage warning).
Even worse, because the NCP1117 lacks ...
- 2,114
3
votes
Accepted
Do we need ARM build for arduino while interfacing R-pi and arduino
The ARM build of the IDE is for running the IDE on ARM systems. If you want to run the IDE on the pi then you need the arm build. However if you want to run the IDE on your PC then you need the IDE ...
- 105k
3
votes
Accepted
Getting wrong values from serial.read() connected to a Raspberry Pi
ser.write(str(x_value));
Writes the string representation of the integer x_value, which is a sequence of ASCII characters.
ByteReceived = (Serial.read());
Serial.print(ByteReceived);
Reads a ...
- 7,979
3
votes
Why would anyone use Arduino in 2017?
An arduino board is really a breakout for a micro processor. Microprocessors you can get separately. A rPi is really a full system without that modularity.
There are also other size factors for that ...
- 3,267
3
votes
Accepted
Install Arduino IDE in Raspberry Pi 3 model B
Visit https://www.arduino.cc/en/Main/Software in your browser, and click the Linux ARM link under ‘Download the IDE’.
cd Downloads/
tar -xf arduino-1.8.3-linuxarm.tar.xz
Extract the file to your /...
3
votes
Is arduino a single board computer?
The Arduino isn't a computer. It is a programmable microprocessor / microcontroller.
Generally a computer can run multiple applications where most programmed devices like the Arduino are running ...
- 993
3
votes
Connecting an Arduino Nano to a Raspberry Pi Zero
You can connect via:
UART
I2C
SPI
All are available on the Pi's GPIO header and on the Arduino. You will of course need logic level translation for a 5V Arduino.
Using UART is probably simplest for ...
- 105k
3
votes
Accepted
Arduino Core for the Raspberry Pi Pico
Official support.
Apparently there's official support for it, now anyway.
I was digging around in the Arduino-mbed core, trying to help someone else, specifically in the boards.txt and spied the line:
...
- 5,364
Only top scored, non community-wiki answers of a minimum length are eligible