Linked Questions

8
votes
2answers
6k 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? ...
2
votes
2answers
1k 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 ...
0
votes
2answers
715 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?
0
votes
1answer
295 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 ...
3
votes
1answer
257 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 ...
0
votes
2answers
759 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 -...
0
votes
2answers
332 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 ...
1
vote
1answer
545 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 ...
0
votes
1answer
264 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?
1
vote
2answers
98 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 ...
0
votes
1answer
201 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 ...
0
votes
1answer
238 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 ...
0
votes
0answers
230 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 ...
0
votes
0answers
189 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 ...
0
votes
2answers
161 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 ...

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