If motion is blurry then the exposure time in the camera is probably to long. More light on the subject usually solves this. ( or a better webcam maybe )
power usage for these systems is critical due to them being solar powered I think this would be worth mentioning in the first post. Does this mean that the devices are completely without power some times ? Also what communication distances are we talking about ? I did set up one USB modem and confi...
sql = ("""INSERT INTO GasData2 (datetimeCO, percLPG, percCO, percSMOKE) VALUES (%s,%s,%s,%s)""",(datetimeWrite,perc)) I'm not an expert of Python nor SQL but it looks like this expects 4 values, but you are only providing 2. ( also I'm assuming "%s" expects strings ? ) You should probably create a ...
Testing has been currently on USB 3G modems which has proved very problematic/unreliable also, Have you done any analysis of what the core reason for the instabilities is ? Is it limitations in the technologies chosen ( Lora/cellular ), flaws in the hardware or improper configuration of the system ?
I know how to set up port forwarding. Have you done that then ? Forwarded port 80 to the IP of the Raspberry Pi ? You can use https://canyouseeme.org/ to check that the forwarding works. The canyouseeme site also tells you your public IP and that is the address you have to assign to your domain nam...
It would be very helpful to see the part of the script that runs the command and exactly what output you get from the command. This is a simple example of how you store a value from the output of a command and test it. ( command "ls | wc -l" just counts the number of file in the currct directory ) #...
If anyone will put malware into a PDF, I would think they would target the x86 architecture and Windows operating system and probably a specific PDF reader like Adobe Acrobat. Chances of this working on a Pi is practically non-existant. But yes you can run services as different users, if you really ...
First you need to know that "characters" and "keyboard-events" are two different things. You can hold in "shift" and SSH will not send anything until you press another key. When you then press "a" key and shift is still held down, ssh will send an "A" to the other side. When you want to get an "A" a...
Two ideas... - I think "raspi-config" has an option that makes the system wait for "network" before starting a lot of services. I could help with the mount from fstab. - Have you tried putting the mount command in "/etc/rc.local", it gets run as root pretty late in the boot process. ( I mean the who...
The answer to your question is "udev" rules. An udev rule can recognize the exact usb device that is your GPS and link the ttyACMx name to another name of your choosing ( like: /dev/gps ) If you can post the output of "lsusb" while the device is connected we might be able to give you an example of w...
But how does the files end up on the computer ?
- Do you take out the memcard and put it in a card reader ?
- Do you connect the camera to the PC with a cable and transfer the files ?
- Or do the camera act as a webcam so you can record with software on the PC ?
If you are only using port 22 I believe you can have as many connections as you want. And I believe SCP also uses port 22. But if you want the tunnel to work for all types of traffic then you should look into OpenVPN or something. The ssh stuff is not really a "tunnel" you just are mapping one port ...