All Questions
91
questions
0
votes
0
answers
411
views
Waveshare 2CH RS232 HAT on Raspberry pi 4 not sending nor receiving message
Hi Raspberry pi enthusiast,
Recently i'm using 2 Channel RS232 Hat from waveshare placed on top of raspberry pi 4. And i already follow all the instruction on this waveshare's wiki. but, until right ...
0
votes
0
answers
2k
views
Attribute: 'ModbusIOException' object has no attribute 'registers'
I try to follow exactly this video https://www.youtube.com/watch?v=ZlHqEOmvW6M
You can have a look what I do : https://drive.google.com/file/d/1LenDiJVxT8wQUOlMbdDZ_VkIzqLvHmLJ/view?usp=sharing
I will ...
- 1
1
vote
1
answer
263
views
How to set the SPI comms delay from CS to SCLK?
I am using a Raspberry Pi to communicate with a SPI-enabled device over the 40-pin cable. To the best of my understanding, the Python scripts rely on the SpiDev device. The script uses the xfer3() API ...
- 113
0
votes
1
answer
215
views
most linux commands gives -bash: clear: command not found , after a binary execution (Raspberry pi)
what could be possibly wrong when following dmesg occurs in Raspberry pi
Following is Output of dmesg command,
[ 227.820110] mmc0: card 0001 removed
[ 227.820411] Aborting journal on device ...
-1
votes
2
answers
2k
views
UTF-8 support on Raspberry Pi
I want to run a python program that receives the data through serial communication and saves it to a file, but after receiving the data this error shows up. Any idea? (code runs ok in Windows but in ...
- 45
2
votes
0
answers
499
views
C# .NET Core application cannot open serial port
I'm running a .NET Core application on Raspberry Pi OS (32-bit Debian).
pi@raspberrypi:~ $ cat /etc/os-release
PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"
NAME="Raspbian GNU/Linux&...
- 175
-1
votes
2
answers
658
views
Raspberry Pi 4 b+ with SIM900A Module Error
I'm working on a project that includes send a SMS message. I have tried connecting my raspberry pi with sim900a. Having problems with communication with sim. I've tried using AT commands with minicom ...
- 1
0
votes
1
answer
2k
views
Read binary data from serial port and save in file
I am link modem to pi3 via serial port and configure this port .
When i receive data in my python software from serial port and save bytes in file, i note i receive too mutch data ,
I am receiving ...
1
vote
2
answers
5k
views
How to best handle Raspberry Pi 4 and Smartphone connection over Bluetooth and Python
I would like to accomplish the following task:
Interact via a python script with my Raspberry Pi and a Smartphone. For me it doesn't matter so much whether to use Classic Bluetooth or BLE but for user ...
- 197
2
votes
1
answer
782
views
Issues running two PL2303 USB to Serial converters on a Raspberry Pi Zero W
I'm having a bit of a problem building a little network-connected UPS monitor. I have two USB to Serial adapters of the pl2303 kind. Latest Raspbian and I'm running them off a tiny powered USB hub ...
- 29
0
votes
1
answer
3k
views
Unable to read serial port with python script but can write [closed]
I have a microcomputer that is initiated from a pico terminal script establishing a ttyUSB0 and baudrate. The micro is programmed only to respond to a small list of alphanumeric inputs. Enter x into ...
2
votes
2
answers
13k
views
RPi4 Serial port not working on either Raspberry OS or Ubuntu
I've been struggling to get my RPi4 serial working over pins 8,10.
I have both a Raspberry OS image and an Ubuntu 18.04 image for the RPi4. In either case, when I use RASPI-CONFIG to disable console ...
- 21
0
votes
0
answers
2k
views
Raspberry Pi 3 Model B FTDI USB to Serial converter driver problem
I've been suffering to introduce my USB to Serial (RS232) FTDI converter on Raspbian 10 on my Raspberry pi 3 Model B.
In Windows 10 it works without installing an additional driver.
FTDI drivers ...
- 101
1
vote
0
answers
49
views
Can i transfer files between two rapberry pi's using Aux cable?
As a part of project, i have to transfer any file from one pi to another pi through Aux cable.
- 19
3
votes
0
answers
316
views
Coin acceptor misbehave when connected on raspberry pi
I have a Bill note acceptor and a Coin acceptor, and I have wrote a program in C# to communicate with these two machines, and it worked perfectly on windows, after that I migrated this application to ...
- 131