Linked Questions

1 vote
0 answers
21 views

Need for Additional Serial Port for communication with 3G module [duplicate]

I want to connect a UC15 3G Module to RPI 3B and use ppp protocol in order to connect RPI to internet over 3G. But the problem is that UART0 on RPI is already occupied by another device and also I can'...
Ahmad Fatehi's user avatar
54 votes
4 answers
283k views

How do I make serial work on the Raspberry Pi3 (PiZeroW, Pi4 or later models)

My Pi3 serial console produces rubbish and fails to respond to the keyboard.
Milliways's user avatar
  • 58.7k
3 votes
4 answers
3k views

Multiple Rpi Serial Ports Problem

So I am undergoing a project where I will need to add 20 UART (RX/TX) to a single raspberry Pi 3. Each device runs at 9600 After looking at the pi, I found it only has 1 UART on it. What would be ...
jLynx's user avatar
  • 133
1 vote
3 answers
7k views

Waveshare SIM7600E-H no wwan0 interface when connected to Raspberry Pi 4 model B

I have connected the new Raspberry Pi 4 model b with the waveshare SIM7600E-H 4G HAT. The os is Raspbian Buster Lite. The configuration I use is the following: 1) The jumpers are placed in the middle ...
dk13's user avatar
  • 113
3 votes
3 answers
4k views

How can Rpi connect a GPS module?

I've tried reconnecting an old GPS module to the UART pins on my raspberry pi, but it seems it's not able to get a satellite fix. I've had troubles trying to get gpsd started, but I'm able to test ...
Rob's user avatar
  • 31
0 votes
2 answers
9k views

using GPIO pins as TX/RX pins

I'm working on a project that needs multiple TX/RX pins, but the Raspberry Pi that I have only has 1 of these pins. Can I use the GPIO pins as TX/RX pins? Or is there an adapter available somewhere? ...
aldo's user avatar
  • 33
1 vote
2 answers
4k views

Rpi Neo-6M / Neo-8M GPS Module Setup / Fix / Update Problems

Hi i'm tryng to change the update rate of my gps tracker(neo 6m ublok) i know the byte that i need to send are 0xB5,0x62,0x06,0x08,0x06,0x00,0xC8,0x00,0x01,0x00,0x01,0x00,0xDE,0x6A i've tried echo -e &...
awaska's user avatar
  • 23
0 votes
1 answer
2k views

Connecting a USB Device by GND, VCC, RX, and TX

I have a few basic devices that utilize a mini USB port. Rather than plugging them into a USB hub, is it possible to connect them and have them recognized by a Raspberry Pi through the four GND, VCC, ...
Matt's user avatar
  • 111
1 vote
1 answer
3k views

Rpi3B+ buster USB to Serial (/dev/ttyUSB0) Communication Problem

I'm trying to establish a serial communication between my Raspberry PI 3 B+ - running on Raspbian 10 Buster - and a testing machine I have. The normal behavior of the machine is to send test related ...
Emanoel Costa's user avatar
0 votes
2 answers
3k views

How can Rpi listen to a GPS module?

Hi guys i'm quite new to raspberry pi and i'm having trouble with a GPS module that i have bought. https://wiki.52pi.com/index.php/USB-Port-GPS_Module_SKU:EZ-0048#Trouble_Shooting i go to installing ...
Antos's user avatar
  • 11
2 votes
2 answers
894 views

USB ports on USB hat not recognised

I have a setup that uses 4 USB cameras, a USB cell modem and a USB weather station. I deal with this by adding a powered USB hub. I just bought a Waveshare USB hat which looked like a tidier solution. ...
Ian Boag's user avatar
  • 143
0 votes
1 answer
1k views

Prolific Technology pl2303: unknown device type

I am trying to connect a Prolific pl2303 to my raspberry pi 4 running raspberry pi os 64 bit. When I look at dmesg I get the following output: [ 31.714397] cam-dummy-reg: disabling [ 44.046197] usb 1-...
Roaders's user avatar
  • 271
2 votes
2 answers
613 views

Rpi Zero and Projector's USB RS232 Serial Cable Interface/Connection Problem

I know there are similar posts on this topic, but I've scoured them all and haven't been able to figure this out. I'm trying to control my projector via a R232 port. I have a USB to R232 cable, ...
ledhed2222's user avatar
3 votes
2 answers
897 views

Increase number of ttys

I am running Raspbian 9 on my RPi 3 B+ and I have only 6 usable ttys (Ctrl-Alt-F#) while other are blank with blinking cursor. ls /dev lists 64 such ttys. How do I enable/run something on them?
Misha's user avatar
  • 33
3 votes
1 answer
876 views

outb() equivalent in Python for GPIO

I am a very beginner on programming and raspberry usage, tho I think I learn fast. I am trying to convert an old program (not mine) that was written for Linux on C++ for communication with a printer ...
dblokillo's user avatar

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