Questions tagged [arduino]

For questions pertaining to the Arduino microcontroller and it's integration with Raspberry Pi projects. Questions about Arduino only are off-topic and can be asked at Arduino Stack Exchange.

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22 views

Porting Arduino code to Raspberry PI

So I have some simple code for an Arduino device that I am trying to run on a Raspberry Pi, and I'm having some issues. Here is the code: #include <VirtualWire.h> byte message[...
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40 views

Rpi SPI nRF24L01+ 2.4GHz Transceiver Module Send Message to Arduino Problem

I have recently bought two nRF24L01+ radio chips for communication between my Raspberry Pi and Arduino. I will be solely using this from Raspberry towards Arduino. The tutorial I followed: https://...
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0answers
35 views

How can Rpi GPIO read the status of a water flow switch connected to a chlorinator?

My pool salt chlorinator uses a flow switch (https://harwil.com/product/flow-switch-model-q-12/) to detect when the pool water is circulating, which is one of the conditions to allow the production of ...
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24 views

Socket communication between Pi and Arduino

I'm a beginner with Raspi and I would appreciate your advice and input on a project I'm working on. Hardware: Raspi 3B+ with latest Rasbian, Arduino MKR 1000 I have a bunch of sensors attached to ...
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1answer
103 views

Is it possible to have a Raspberry Pi work like a much faster arduino

Let's imagine you have a real-time problem that you can solve with the Raspberry Pi hardware but you need something much faster than an Arduino. Is it possible to bypass the OS of a Raspberry Pi to ...
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0answers
29 views

Project Guideline/ Suggestions: Arduino Mega-Raspberry Pi Combo for HD Video Streaming with Stamping

I hope all is well. I'm new to the Raspberry Pi arena, and would love some feedback on the feasibility of this project: I have an Arduino Mega that's logging data (in addition to other stuff which is ...
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1answer
39 views

Small, Rechargeable LiPo and RPi 4B

I've started a new, more specific thread, here. I'm looking for a way to power my Pi 4B inside a 3d-printed laptop project (nothing has actually been started yet), and it would be great to hear what ...
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0answers
36 views

upload GPS real time data to web browser with wifi [closed]

i am doing a project for my collage. The objective of this project is to collect real time GPS data and displaying the data on a web server, i am now able to run the program on Arduino IDE to get the ...
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0answers
145 views

Problem sending analog read values over serial

Ok I apologize as I have edited this quite a bit, but I have narrowed down the problem a bit more. For some reason I can't transfer values from my arduino analog pins?? I am trying to send values ...
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1answer
51 views

Get time in microseconds (a 8 digit number) in python3

I am converting an Arduino code to python3. I am trying to read data from IMU 9250 sensor from the I2C interface of raspberry-pi. I am facing issue with the timing libraries of raspberry-pi and ...
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0answers
15 views

HC05 not able to bind Raspberry pi3 bluetooth mac address B8:27:FB:A4:88:12 by AT command

I am trying to bind raspberry pi Bluetooth address on hc05 and Arduino by AT command but every time I am getting the error(7) Here is my AT command Details: AT+BIND=B8,27,FB,A4,89,12 OK ...
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0answers
24 views

Permanent Arduino usb address on RPi!

So my project is using to Arduinos slaves to RPI that is master. They communicate through USB. Each time I remove one of the Arduinos I need to modify the .Py script to add the new USB alocated. Is ...
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75 views

RF ISM 433MHz Module Using Rpi RadioHead Low Speed Problem

I have a rf module 433Mhz which consist of a transmitter and a receiver, I used virtualwire and Radiohead library in Arduino and it's pretty fast. When I shifted that to rpi there were no dedicated ...
2
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2answers
117 views

Is it safe to connect a GPIO Pi pin directly to a 3.3V Arduino pin, and vice versa?

I have Pi4 on a UPS and a 3.3 volt Arduino (Nano 33 IOT) supplied without a UPS protection. I am designing a system where Pi monitors a 3.3V Arduino pin to know if there is a power outage (and shut ...
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1answer
73 views

Regularly power up an autonomous Raspberry Pi? (e.g. once a week)

I want to power a Raspberry PI from a power bank, which should give me - according to various sources on the Internet - 30 to 70 hours of operation. How can I power up the Raspberry Pi once a week to ...
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1answer
83 views

Need advice for connecting multiple arduinos to raspberry pi

I have a project in hand where I need to connect 5 arduinos as slaves to Raspberry Pi. Load Cells, Reed Switch, Solenoid lock will be connected to each of the arduino. The arduinos need to send the ...
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0answers
57 views

Issue with I2C communication with raspberry pi and arduino

I am new to I2C communication and python coding so please bear with me if my question is naive or my code looks very bad. I am able to achieve I2C communication between raspberry pi and arduino and ...
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1answer
65 views

Receiving data with an unwanted character

I'm sending data to my Raspberry Pi 3 from an Arduino Mega via serial communication, but sometimes the Arduino sends a strange character, in most of the time it sends a mirrored question mark. Why ...
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0answers
43 views

Node-red on Pi: Unable to send/receive to Arduino Leonardo via USB serial

I'm connecting a Arduino Leonardo to Pi4 (P3b+ has the same issue). I wish to send and receive data from it in node-red (using serial nodes from the standard palette). I can see that Arduino is ...
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1answer
81 views

Problem with i2c communication between arduino and raspberrypi

I have connected Rpi with Arduino using i2c communication. Pin Configuration: Rpi ---- Arduino Mega SDA SDA SCL SCL GND GND I also have an encoder attached to Rpi. Encoder `------ Rpi 5V 5V Gnd Gnd ...
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1answer
42 views

Addressing PCA9865 Servo Driver

Although not directly related to the Raspberry Pi, the piece of hardware I'm attempting to understand can be utilized by the Pi and it's a relatively basic concept that I'm looking for more ...
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0answers
226 views

Can I connect CJMCU-4541 MICS-4514 Carbon Monoxide Nitrogen Oxygen Sensor with Raspberry Pi zero

This sensor CJMCU MICS-4514 Carbon Monoxide Nitrogen Oxygen Sensor is arduino compatible can it be used with raspberry pi
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40 views

Arduino Mega to Raspberry pi 3 Uart communication stops after a short while

I have been trying to setup a data stream from Arduino to rpi using an USB to Uart converter. I am using 4 startbytes and then reading all 36 bytes of data at once. Baudrate, parity and stopbits are ...
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0answers
122 views

Error occurred: Please Check “Store archive output”

I am trying to download and install the Arduino IDE on the Raspberry Pi 3 Model B Vol 2. I have followed the tutorials and attempted to download the Arduino 32 arm bit tar file on the pi. I am ...
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0answers
95 views

reading EMG on Rpi3 using Teensy 3.2 on usb serial

We are using MyoWare EMG sensor and reading the RAW EMG pin as well as filtered SIG pin on the board. What it basically does is sends an analog value as a fraction of the input Voltage, which in this ...
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1answer
54 views

Peculiar features of I2C communication between RPi and Arduino

I am currently trying to establish two-way communications between an Arduino Leonardo and a Pi model B using the I2C bus, as slave and master respectively. Spookily, the Pi can successfully send ...
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2answers
197 views

Can I drive a custom LED matrix from my Pi

I have an idea for a project, but I am unsure of the best route to take. I am going to create a custom 11x10 LED matrix (addressable LEDs like WS2812) with the intention of lighting up certain LEDs ...
2
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1answer
81 views

I2C Communication between Arduino and RPi failing when Arduino is sending data

I'm trying to read some data from the Arduino slave and when I receive the data it shows some numbers but not the correct ones. I'm using node and i2c-bus module, also tried with wiringPi but got the ...
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1answer
51 views

How can I reproduce arduino's shiftOut( ) fonction on a raspberry pi 3+ in C langage?

Can someone help me to reproduce arduino's shiftOut( ) fonction on a raspberry pi 3+ in C langage? Preferably using bcm2835 library.
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1answer
481 views

Serial Communication of <raspberry pi zero w> with <arduino nano>

Background I'm trying to control some motors by raspberry pi zero w. I did, but the PWM produced by Software was unstable. So I decided to use arduino uno with zero. (Zero is required because I ...
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2answers
1k views

How to send and read a string from Raspberry pi to Arduino via serial interface?

I was trying to send and receive data between Raspberry pi and Arduino UNO. I'm able to send and receive a string from Arduino to Pi using Serial.println. I spent hours searching a better tutorial or ...
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1answer
267 views

How to get Data from Rasperry to Arduino?

Id like to get a simple integer from my pi over to my Arduino (live, so while both are running and with Minimum latency), but I cant use any Pins because im already using all of them because I use a ...
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0answers
47 views

USB com port Assignment

When the Raspberry pi boots up, it looks for the Arduino connected serially. I have a udev rules that finds the USB port Arduino is connected. This works just fine. In the program I am bit-banging ...
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2answers
63 views

Raspberry Pi and Arduino Due Spi

Is there any way to establish SPI communnication between Raspberry Pi 3B + and Arduino Due. Both only support master mode. I tried to google but mostly answers from 2013 come up. Has there any recent ...
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0answers
34 views

Raspberry Pi3 not receiving HTTP request from Arduino

I have been running an application on an older original Raspberry Pi. The Raspberry Pi was running Incredible PBX and I have some tables set up in the MySQL database to store data received from an ...
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1answer
56 views

Incorrect i2c read bytes

NOTE: Please read the bottom. There's a plot twist. I'm reading three bytes and my NodeJS code reads 3, 192, 144 in decimal while my logic analyzer reads 0x03, 0xC0, 0x10 which translates to 3, 192, ...
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1answer
108 views

Arduino slave initiating an I2C transmission to Raspberry Pi master

Is there any way for an Arduino slave to send a byte array to the raspberry pi master without the master having called on it?
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2answers
80 views

ARDUINO Code in Raspberry Pi 3

I'm new with this kind of projects and I'm trying to do my graduation project using Raspberry Pi 3 and vibration sensors. The sensor is Piezo LDT0-028K and I'm using ADS1115 to convert analog to ...
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1answer
359 views

Serial Communication from Raspbian using Python to Arduino

In Terminal its working but not working using python code. My Code: import serial from time import sleep ser = serial.Serial ("/dev/ttyS0") while True: received_data = ser.read() ...
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0answers
28 views

How to read voltage data from arduino nano (slave) using i2c communication

python code: import smbus import time bus = smbus.SMBus(1) SLAVE_ADDRESS = 0x10 def requestreading(): # try: # # b1 = data[0] # b2 = data[1] # b3 = data[2] # ...
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2answers
1k views

Rpi3 to Arduino Serial UART Communication Tutorial

I'm trying to connect my Arduino to my Raspberry Pi using the GPIO pins. I understand that the Pi uses a 3.3V signal while the Arduino uses a 5V signal so I bought a bi-directional logic level ...
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2answers
644 views

Unable to install Arduino 1.8.9 on raspberry Pi 3B+

Im trying to install the arduino IDE on my raspi. I am using the .tar from the website to get the last version (Linux Arm 64b) I tried from interface and from the terminal, in the opt or in the usr ...
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1answer
57 views

Serial comms to Arduino unexpcted behaviour

R Pi 3 B+, Arduino Mega 2650 I am trying to send motor control instructions via user input from the Pi to the Mega. Pi side code... import serial port = "/dev/ttyACM0" rate = 9600 s1 = serial....
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1answer
128 views

Mapping Arduino pins to Raspberry Pi pins

I am following instructions on wiring an LED screen to an Arduino. I have a Raspberry Pi 3 Model B, so I am having to "interpret" the instructions. I'm stuck on a step where the instructions say to ...
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0answers
153 views

RPi camera OCR,and save output in variable (pyhton with tesseract)

I want to make a python code for the raspberry pi, with the tesseract OCR engine, that it keeps reading text from the camera in realtime, saves in a variable, and sends output to Arduino. Is there a ...
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0answers
71 views

Raspberrypi 3b+ interface with Voice recognition module V3.1

I have write program for Voice recognition Module V3.1 and Raspberrypi 3b+ , but my problem is I am not able to write any of my voice command on voice module when I speech my command its not return ...
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2answers
89 views

Is it possible to compile and Arduino Sketch into a C++ file to run on Raspberry Pi?

Since Arduino uses C++ for its programming with libraries that are specific to Arduino, is it possible to compile your sketch and have it run as a C++ program on a Raspberry Pi? I saw there was ...
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1answer
35 views

Breadboard / Jumper Cables Instead of Arduino Uno Shield

I have the following hardware that mounts on top of Arduino Uno: https://www.cooking-hacks.com/documentation/tutorials/control-hvac-infrared-devices-from-the-internet-with-ir-remote/ I need to ...
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0answers
57 views

Send IP packets between two Arduino or two Raspberry boards

I have two Arduino boards and I want to do a small project with them. I want them the do the following: Firstly, I want to send an IP packet through the network from the first Arduino to the other. ...
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0answers
16 views

Is it possible to use Adafruit's Arduino libraries for my Raspberry Pi alone? [duplicate]

I have a MPR121 touch sensor, LSM303DLHC accelerometer & magnetometer, & SSD1306 128x64 display, and I don't have a Arduino.