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Recent content by charles linquist

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    Ser2Net - in reverse.

    I modified the Python file. And it works - kind of. The program sends/receives data, however it is too slow - that is, it seems to grab a byte, and send a byte. I was hoping that it would grab a packet and send a packet. The data is in variable-length packets (9-64 bytes). I think there is...
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    Ser2Net - in reverse.

    Thanks, I will check out Single Board Computers. In the meantime, I did find some links to a telnet program written in Python that I believe I can modify to work - assuming that the overhead of Python isn't too great. My processor has other things to do at the same time.
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    Ser2Net - in reverse.

    I would think someone should know the answer, since one of these plus a Raspberry telnet server running ser2net would be equivalent to an unlimited-length serial cable. Of course, it would be unencrypted, but for some uses, it doesn't matter.
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    Ser2Net - in reverse.

    I need a Raspberry pi to automatically telnet to a remote server (port 8000) and connect the Raspberry's serial port to the resulting data stream. My ser2net.conf file is 8000:raw:0:/dev/serial0:115200 8DATABITS NONE 1STOPBIT But of course, this doesn't "call" the server. So, if I type...
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    Persistent connection - Amazon ec2 server

    I'm a relative NewB. I have an Amazon ec2 server set up as a 'reverse SSH tunnel'. A remote site is connecting to the Amazon server via SSH (using autoSSH), and my local computer then connects to the Amazon server - thus providing me with a connection to the remote site. From time to time, the...
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    Networking issues - Raspberry pi

    I'm using a Raspberry pi to connect to a reverse SSH tunnel setup on an Amazon ec2 server. And I'm using a 4G/LTE USB "dongle" to make the connection. The "dongle" looks like eth0 or eth1 to the Raspberry pi and will usually connect to the carrier during boot. I have added a "SLEEP 16"...
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    dhcpcd crashes on Raspberry pi

    I'm using a RPi 3 (Stretch) to connect to the internet via a Verizon 4G/LTE USB 'dongle' (Pantech UML295) , which presents itself as eth1. On first power up, the Raspberry always hangs at 'A start job is running for dhcpcd on all interfaces (20s / 1min 42sec)'. At this point, the dongle...
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    AutoSSH

    I'm have a reverse tunnel set up in the Amazon server so that I can get live serial data over the net. I don't think I could use a remote filesystem for that.
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    AutoSSH

    I'm using autoSSH to connect to an Amazon ec2 server. I need to automatically reconnect to the server if the SSH connection is lost for a few seconds. I need the system to know that it has lost the SSH connection and then re-establish the connection to the server. In some cases, the Ethernet...
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    IOT over 4G/LTE using Raspberry pi

    There may be other ways to handle this, but I'm using a Novatel 551 and a Pantech 291 modem. Both of them respond to "atdt" in order to establish a connection. I also have a Pantech UML295VW, a HUAWEI E397U, a Novatel MC620 and a Novatel MiFi 6620, but I haven't been able to get these to work...
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    IOT over 4G/LTE using Raspberry pi

    I am using a Raspberry pi for an IOT project. The Raspberry connects to an Amazon ec2 server over SSH. The connection uses a 4G/LTE USB "dongle". I can get the connection made (using wvdial, pppd and autoSSH) - so that all works, but my issue is - sometimes the 4G connection drops, and I...
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