Unable to get any data from UM980

GPS/GNSS
1

I’ve gone through two of these boards thinking the first one was defective, but I can’t get any data out of my UM980 breakout thingy.

This is the antenna I’m using: Amazon.com: MASWELL GPS Antenna Screw and 3M Adhesive Mount SMA Male GNSS Antenna GPS GLONASS BEIDOU GAILEO L1 Band 1561-1602MHz IP67 Waterproof UV stabilized Nylon overbraids Cable : Electronics

Once connected to USB the board shows one solid red light, one solid blue light, and one blinking amber light. On the computer, lsusb shows:

# lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 008: ID 1a86:7523 QinHeng Electronics CH340 serial converter
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Connecting to the port via Minicom simply shows the state as “Offline.” No data comes through. I try to use ntripserver to collect data, but get nothing.

# ./ntripserver -M 1 -i /dev/ttyUSB0 -b 115200 -O 1 -a servers.onocoy.com -p 2101 -m MOUNTPOINTNAME -n CREDENTIAL -c NTRIPPASSWORD
serial input: device = /dev/ttyUSB0, speed = 115200
Destination caster, server or proxy host <servers.onocoy.com>
caster|server output: host = 35.207.172.57, port = 2101, mountpoint = unified-redbird-13241, mode = http

transfering data ...
ERROR: more than 120 seconds no activity
WARNING: reading input failed: Interrupted system call

For the life of me I don’t understand why I can’t get this thing to actually function.

2

I’d start by getting the correct antenna for this board. The GPS is a tri band GPS and your antenna is a single band antenna.

Try a 3 band (L1,L2,L5) antenna and see if that helps.

1 Like
3

Thanks for the heads-up but that wasn’t the problem. Bought the correct antenna and I’m having the exact same problems.