Questions tagged [raspberrypi]
For questions about integrating the Arduino microcontroller with the single-board computer Raspberry Pi. Questions just about Raspberry Pi are off-topic but can be asked on Raspberry Pi Stack Exchange.
152 questions
1 vote
1 answer
96 views
Reading JSON from Arduino via Serial Missing Parts of Message
I have a project (Digital Dashboard for a Motorhome) in Pi that reads JSON data from an Arduino board and sends it via Serial. The Pi gets the JSON data, makes some adjustments and then sends it to an ...
0 votes
2 answers
152 views
Can the ATTiny88 be programmed via I2C from a Raspberry Pi?
This is similar to Is it possible to program an AVR chip (atmega328p) via i2c?, but not exactly, and that thread is a little shy on details. I have an ATTiny88 attached via I2C to a Raspberry Pi, with ...
- 115
0 votes
1 answer
156 views
Arduino pulls i2c bus down
I am building an airplane. As a controller I am using a Raspberry pi 4. There are 3 sensors (MPU6050, QMC5883L, BME280) and arduino pro mini connected to the raspberry via i2c. When sending requests ...
- 13
0 votes
1 answer
142 views
How to architect streaming data from multiple plant monitors to single Arduino?
Premise: I'm trying to determine a good way to architect getting data from 4 plant monitors to a single Arduino. For context, that Arduino will have a Wifi connection that will transmit the data from ...
- 103
1 vote
1 answer
675 views
Error while uploading the sketch to Arduino UNO using CLI
I have connected my Arduino UNO through USB to Raspberry pi 3B. I am using CLI for editing, compiling and uploading sketches > arduino-cli upload --fqbn arduino:avr:uno cli-test. However, after ...
- 113
1 vote
1 answer
380 views
Serial hangs on Arduino-Uno
I'm having issues with Arduino and RPI3 serial communication, it'll become unresponsive after a little time. Tried increasing BAUD rate and same issue, also happens on Windows as well so RPI is not at ...
- 113
1 vote
1 answer
89 views
Why do I have to burn the code to make it run? [closed]
Why do I have to burn the code twice to actually burn it on to the Arduino board? I have to execute this command twice - only then is the chip getting programmed. I'm using this command to burn the ...
- 19
2 votes
1 answer
221 views
So many missed bytes with serial comm
I have a setup with serial comm from Raspberry Pi to Arduino. It's communicating at baud 9600 on both devices, and from Raspberry Pi 3b+ GPIO-14,UART0,TX0 to Arduino Nano RX0. There's a level shifter ...
- 121
1 vote
2 answers
120 views
Problem with first two samples of serial data received by RPi
I'm trying to receive a string from an Arduino to a Raspberry Pi via a Bluetooth socket connection (RFCOMM). I'm using an HC-06 Bluetooth module, an Arduino UNO R3, and an RPi 4 Model B. For the ...
1 vote
1 answer
87 views
How to properly send bytes between RPI and Arduino over I2C while using ISR without IOerrors?
I have a I2C connection between an RPI 3B+ and Arduino Nano. I want to send a key and a corresponding value byte, and the arduino does something with that inside a timed ISR. Which works. But I get ...
- 31
2 votes
1 answer
1k views
Convert float to byte, from Arduino to Raspberry Pi i2c
I'm trying to send the temperature value from the DHT sensor to a raspberry pi through I2C. Which is the best way to do it?. The temp value is a float, and I think I have to convert it to byte and ...
- 123
0 votes
1 answer
109 views
Where are the programatic definitions for different processors stored?
I need to modify an existing library that relies on being able to detrmine what board / processor the code is being run on. To do this, it uses definitions such as this for an Arduino Mega: // Arduino ...
- 101
0 votes
2 answers
339 views
Arduino Uno - Raspberry PI - Float Sensors - Water pumps
I am experimenting with Aquaponics and since I am a software developer I found it "smart" to use arduino/raspberry in order to control the water flow and not simply use a water pump with ...
- 159
2 votes
2 answers
2k views
Greyed out port for Raspberry pico in Arduino IDE - Ubuntu 20.04
I'm trying to figure out how to program my new Raspberry Pico with Arduino, but don't see a port to select so I can't upload the blink sketch. Here's what I've done: The Pico is working, I can ...
- 396
1 vote
1 answer
188 views
Error in I2C Communication Between Arduino and Raspberry Pi
The code below sends data to Raspberry Pi every 20 millisecond. The code works fine but sometimes python throws an error. Why this is happening? Should I give more time between writeData? Error: > ...
- 165