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Was not able to add images in line so attaching them here.
The header is soldered on here by hand and then each module is tested.
Can you try
i2cdetect -y 1(not two)Mark --OzzMaker.com --
I managed to get IMU and pressure/temp to work. Thanks for your help.
I’m now trying to get GPS to work. I can see the NMEA stream and it seems to have acquired a location.
However, gpsmon and cgps can’t seem to access the stream. I followed every step of the instructions (multiplex, set SARA-R5-init.sh, rc.local, etc…)
Here are some screenshots to help locate the issue.
I’m happy to answer any question.
I appreciate your time and effort to help with this.
Actually, the NMEA stream never starts automatically. Instead, I get this new file in /tmp/ttyGSM0 with the start instruction which never ran.
That’s caused by the instruction
sleep 10
echo -e “AT+UGPS=1,4,67\r\n” > /tmp/ttyGSM0which I assume is incorrect (I suspect it could be /dev/ttyGSM0 instead of /tmp/ttyGSM0 like in the instruction for direct commands)
I managed to solve this problem. I’m using a python script and I’m managing all the serial port communication through that.
Next I’ll look into LTE.
Good to see you have it working. And apologies for the error in the guide. I have just updated it to say /dev/ttyGSM0
Richard --OzzMaker.com --
OK, with LTE, I have this issue.
Any idea what could be causing it?
Also, if I connect to the modem (/ttyGSM1) via minicom, what instructions can I send it to check its status and verify it’s correctly connected?
Attachments:
OK I figured out some issues.
I used the AT command manual for this SARA-R5 modem.
I tried the first general commands (which manufacturer, which model, which version, which IMEI…).
Then I tried AT+CCID which is to check the SIM card identification number. This returned ERROR. It didn’t specify which error, so after a while, I looked at the modem and inserted the simcard the other way. Same error. I restarted the pi and now it worked passed this error! (see screenshot).
Attachments:
I’ve been wrestling with PPP.
The connection is established:
ifconfig
ppp0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500
inet 192.168.201.1 netmask 255.255.255.255 destination 192.168.201.2
ppp txqueuelen 3 (Point-to-Point Protocol)
RX packets 8 bytes 224 (224.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 10 bytes 351 (351.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0ping 192.168.201.2
PING 192.168.201.2 (192.168.201.2) 56(84) bytes of data.
64 bytes from 192.168.201.2: icmp_seq=1 ttl=255 time=22.9 msroute -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.86.1 0.0.0.0 UG 302 0 0 wlan0
192.168.86.0 0.0.0.0 255.255.255.0 U 302 0 0 wlan0
192.168.201.2 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0However, the connection isn’t used.
I think there’s two ways to use the connection.
1. Set the connection as default – I haven’t been able to configure the Raspberry Pi to connect via ppp by default. Can you explain how to do that?
2. Tell the script to use specifically this connection (using requests library and proxies setting)
Here is my script.
It works when proxies=proxies is removed (using wifi), but fails when proxies are set (attempting to use ppp).
import requests
proxies = {
‘http’: ‘http :// 192.168.201.2 ‘,
‘https’: ‘http :// 192.168.201.2 ‘,
}
x = requests.get(‘https://google.com ‘, proxies=proxies)
print(x.text)(I added spaces in the definition of proxies as otherwise this reply won’t be accepted by the forum server)
runtime errors:
ConnectionRefusedError: [Errno 111] Connection refused
Failed to establish a new connection: [Errno 111] Connection refused
HTTPSConnectionPool(host=google.com, port=443): Max retries exceeded with url: / (Caused by ProxyError(Cannot connect to proxy, Failed to establish a new connection: [Errno 111] Connection refused)))I’m looking for help for either setting the connection as default, or for using a python script. I just would like the raspberry pi to connect to the internet via ppp.
Thank you
do you want to use PPP even if you have a wireless connection?
The output below looks like you have wlan0 and ppp0 connection and the default route is via the wlan0 interface.route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.86.1 0.0.0.0 UG 302 0 0 wlan0 192.168.86.0 0.0.0.0 255.255.255.0 U 302 0 0 wlan0 192.168.201.2 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0If you only have the ppp0, the Pi will use to access the internet
Mark --OzzMaker.com --
I didn’t know that it uses wifi per default but reverts to ppp if that’s the only option available.
I tried that and it works.
However, the datarate is super slow (which is perfect for what I need).But my first way to try was to use remote VNC, and that failed due to slow datarate.
Later, I connected a screen, and realized the data does flow through ppp.
Thanks a lot for the support!
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