Linked Questions

9 votes
2 answers
18k views

How many serial ports are on the Pi 3?

How many serial ports are on the Pi 3? There is one on the GPIO pin that goes to ttyS0. Is there a separate one for USB? I have read somewhere about /dev/ttyUSB0. Is that a separate serial port? ...
Lightsout's user avatar
  • 429
6 votes
1 answer
11k views

What is the default cmdline.txt for Raspberry Pi 4

I need to know the default contents of the cmdline.txt file for a Raspberry Pi 4. I was following an old tutorial about setting up a gps module. The tutorial had me change the contents cmdline.txt. ...
Mike C.'s user avatar
  • 193
2 votes
2 answers
3k views

GPS (USB) with NTP has a consistantly large offset and high jitter from public NTP sources

I have a Raspberry Pi Model B Rev 2 (BCM2835 rev 000e). Connected to it is a USB G-Mouse GPS receiver - which is really just a u-blox 7 GPS receiver. I've had it running for about 15 hours now and it ...
lightswitch05's user avatar
0 votes
1 answer
1k views

How to copy the gps data from Raspberry Pi terminal to a text file?

I'm getting the Gps values after running the following commands in Raspberry Pi . sudo gpsd /dev/ttyACM0 -F /var/run/gpsd.socket gpsmon How can I copy or write the gps data displayed on terminal ...
sahana's user avatar
  • 9
2 votes
2 answers
2k views

how to read NMEA 1083 data over USB on Pi?

we're trying to read data from a digital yacht AISnet base station on a Pi. From what I've read, Digital Yacht has drivers for both osx and windows (but not linux for this unit) and their job is to ...
Iain Duncan's user avatar
0 votes
2 answers
2k views

Getting NMEA string from GPS module to your Raspberry PI B+ [duplicate]

I would like to ask if it possible to get NMEA code/string from a GPS module that connected to one of the GPIO of a Raspberry?
CeciliA's user avatar
0 votes
2 answers
2k views

How to Pipe RTL_FM audio out to minimodem in Rasberry Pi Strech?

I am trying to decode the data which is received through rtl_fm with rtl-sdr. I am using the below command rtl_fm -f 144.5e6 -s 200000 -r 48000 | aplay -r 48000 -c 1 -f S16_LE | minimodem --rx 1200 -...
user3661448'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
1 vote
1 answer
2k views

How can Rpi4B use UART to read and analyze received data at a 3DR FPV Air Radio Module?

I am trying to set up the FPV telemetry radios (Air and Ground Module 433MHz). I have connected the Ground module to my laptop (USB) and air module to Raspberry Pi 4 UART pins. Using Mission planner ...
TheLazy's user avatar
  • 133
0 votes
2 answers
1k views

MCP3008 with photoresistor, analog to digital, noisy readings

I am trying to read values from a photoresistor. I would like to be able to read the 'level' of light, not just a binary signal. So I bought an MCP 3008 analog to digital converter, but I am running ...
Tuomas Talvitie's user avatar
3 votes
2 answers
284 views

Do most GPIO sketches revolve around processing operating system support (not direct support like arduino)?

I am relatively new to the Raspberry PI platform and more experienced with Arduino. I have noticed in the examples for Infrared Receiving and 1-Wire protocol that the Python sketches to interact with ...
Startec's user avatar
  • 297
0 votes
1 answer
928 views

Probably GPSD commands not on $PATH. How to put cgps or xgps on $PATH? [closed]

I installed gpsd, get data stream via SSH, but cgps or xgps commands do nothing. How to ensure GPSD is properly installed and commands are on $PATH?
Meronmos's user avatar
0 votes
1 answer
702 views

gpsd/gpsmon on R-Pi 3 re-activates disabled NMEA messages?

I have a Raspberry Pi 3 with Adafruit's Ultimate GPS Pi Hat. I was able to successfully install gpsd and chrony. I am now getting NMEA and PPS thumbs up. But I have a weird issue. The Ultimate GPS ...
Tom's user avatar
  • 1
0 votes
0 answers
665 views

SIM800L - GAMMU not connecting - RPI 4

I connected my RPI4 & RPI3B one by one with my SIM800L board in hope to be able to receive sms on the board. Unfortunately, the boards do not detect the module. The SIM800l was given external ...
akki2401's user avatar
1 vote
2 answers
217 views

Slight dip on the GPIO 5v line when LEDs are on

I have my raspberry pi set up to do two main things: control 16 LEDs via 16 transistors each connected to an out pin. The LEDs are collectively fed the 5V from the GPIO. power a chip also on the 5V ...
schmop's user avatar
  • 179
1 vote
0 answers
578 views

how do I mirror my google maps from phone to a small display on raspberry pi , {of course without GPS module}?

So, I am looking to make a very simple device that can work as a secondary screen for the maps app on my phone so that I can attach it to my bike and see the direction with having to use a cellphone ...
Harit Trivedi's user avatar
0 votes
0 answers
575 views

GPS BU-353S4 with Pi4 - not reading position, only timestamp

I'm just gonna say real quick that I've through about 20 threads on this topic, so I know this issue has been brought up many times, but the problem seems to change for every new build of raspbian or ...
ahh_mino's user avatar
0 votes
0 answers
559 views

Raspberry Pi 3B+ successfully connect and pair but can't receive data from OBD II

Hello guys my problem is i cant recieve any data from OBD II to Raspberry Pi 3B+ Here the materials that i use: Raspberry pi 3B+ ELM327 -> OBD II Operating System of Raspberry Pi -> https://medium....
Erika Salvador's user avatar
0 votes
1 answer
396 views

LTE modules connected to USB hub cannot be accessed

The USB-HUB is self-powered, and two LTE modules are connected via USB-SERIAL to USB-HUB. We are facing a problem is that,The devices which are connected to USB-HUB can not be accessed. Is there any ...
Praveen Deshmane's user avatar
1 vote
1 answer
193 views

Raspberry Pi4 + Neo 6 GPS : Problem with getting data

I am using Raspberry Pi 4 (OS:bullseye, version 11) and Neo 6 GPS. I have tried to follow the tutorial https://www.instructables.com/Interfacing-GPS-Module-With-Raspberry-Pi/ but I am stuck at step 8. ...
SSN's user avatar
  • 11
0 votes
0 answers
186 views

Can't connect waveshare hat to raspberry pi 3b via python3 to obtain gps

I'm stuck with my waveshare hat and it would be cool if you could help me. I would like to obtain the gps location. I'm a python beginner and tried to use some already written code from this websites:...
Philipp's user avatar
1 vote
0 answers
142 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 ...
confuse's user avatar
  • 11
1 vote
0 answers
137 views

Need a constant power supply for raspberry pi

I'm using a raspberry pi which is connected to a gps. What we do is we plug the raspberry pi to a truck with a car charger so we can track it. But the problem we are facing is that the truck moves ...
Muhammad Rehman's user avatar
2 votes
1 answer
116 views

Traffic Light Led Change During NOAA Satellite Script?

I have the following script that downloads and processes NOAA satellites. I'd really like some external LEDs to indicate the following; When the script is running, turn or blink red When the script ...
dandspach's user avatar
1 vote
2 answers
88 views

Will eBay USB GPS Antenna work with Raspberry Pi?

Do you reckon this eBay USB GPS Antenna (https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F143312562035) will work with a Raspberry Pi and if so will I be to use this ...
Eddie's Tech's user avatar