Hi,
I’m interested what projects are others running on the Raspberry or other SingleBordComputers.
I’m currently working on an weatherstation with the Tinkerforge weatherstation. The code is in JS.
At the moment are the measurements logged in a MongoDB. The errors are logged in syslog and additional in seperate files. My next step is to log average values in MySql.
On the same RPi runs a network monitoring tool.
I am wondering if you update raspbian video to add making the pi being a hotspot as well. I tried to use the hotspot video with the latest raspbian and the pi 3b. But i get this failure
Generating /etc/default/isc-dhcp-server…
Job for isc-dhcp-server.service failed because the control process exited with error code.
See “systemctl status isc-dhcp-server.service” and “journalctl -xe” for details.
invoke-rc.d: initscript isc-dhcp-server, action “start” failed.
● isc-dhcp-server.service - LSB: DHCP server
Loaded: loaded (/etc/init.d/isc-dhcp-server; generated; vendor preset: enabled)
Active: failed (Result: exit-code) since Thu 2018-04-19 13:12:31 EDT; 60ms ago
Docs: man:systemd-sysv-generator(8)
Process: 3345 ExecStart=/etc/init.d/isc-dhcp-server start (code=exited, status=1/FAILURE)
Any idea
Thanks Don
Can you tell me what’s the output of “journalctl -xe”? I find the most daemon starting problems on our linux server at work with the output. I think that you have errors in your configuration. An other place to look for the problem is the syslog.
I am making a Lattepanda Enhanced and Raspberry Pi Zero W build right now. My goal is to have an x86 and ARM mobile development platform for school. At this stage there is just an 1/8 in. sheet metal box. I chose a Anker Powercore 26800mah battery for power. I chose the Lattepanda over a Pi for the main Computer as it had a affordable nice touchscreen that I could SSH the Pi Zero over Serial or USB. Almost all the internals are ready for assembly but the box needs a good handle to hold. If only l I had the one of the new Lattepandas that have better Linux drivers and such.
Pics of it in progress will be posted so people can get ideas for their own portable rig.
That’s a realy nice case. The only thing I don’t like is the connection between the upper and the lower part. I prefer hex screws.
I like to use rivets as they can be flattened. I will grab some more pics today of it. The lid is a slipfit with two latches. My plan is to epoxy or otherwise mount the Lattepanda 7" screen to the inside of the lid. This is technically my semester project for school but I personally designed and built it myself. My teacher just let’s me do whatever I want. The hardest part happens to be making external USB ports. Personally I really don’t like using hex screws. When I get the handle I will use hex screws because rivets would wear out when carrying. That handle has to withstand a 17 oz. Battery pack and several computers. Oher notable features planned in the design are external HDMI (female connector) and USB 3.
This is a picture of my test with the Anker Powercore 26800mah battery pack undergoing load testing with my Pi 3B. Playing YouTube(Linus Tech Tips) at ~30% CPU Load, it went for 13 hours and 20 min. Knowing this the Lattepanda and Pi Zero W should go 8-10 hours.
I would install an additional usb power meter. It could be nice to know the current power consumption of the system. With this information could you calculate the runtime of the system.
I don’t own a USB power meter but I don’t really need much more juice. I have about the biggest pack money can buy. It weighs 17 Oz. and even that is too heavy. Hey @SAi84 do you have any recommendations for 3 or 4 port USB 3 unpowered hubs? I would like more internal ports for the Lattepanda. You said you were from Germany in the welcome thread. I was woke up at like 03:00 wondering why someone would messagee then. I guess I will have to go to UTC time. That might fix this time zone problem. 
Here is some pics of the battery brackets I made today and the waiting to be wetsanded handle.
I have an 3 port usb 3 hub from aukey with integrated gigabit ethernet card. I bought this hub for a MacBook Air. The cabel is nearly 1ft long.
The hub works very well.
The Lattepanda Enhanced does not have USB C. I wish it did like the ones going to be released in May. It only has type A. I like the gigabit networking. The Lattepanda has only 100 mbit Ethernet onboard.
Sorry I didn’t look at the connector. I have an older version of this hub with the same features, but an normal USB 3.0 A-connector.
Hubs with a type A-connector are now very rare. In your case I would use a hub with an ethernet port as backup, when the WiFi connetion is not so good or you need an additional ethernet connection for routing.
I suppose I can get a USB C to A adapter so if I decide to upgrade to a Lattepanda Alpha I can just remove the adapter. I am planning on becoming a network administrator as a career choice so extra networking is a big bonus. I see an adapter on Amazon that should work.
Or I might be able to find the older version for a slightly discounted price.
I would use an adapter without a wire like this
one. With this version is the wiring shorter and you have another one as backup or for other things like a smartphone or an other project.
I did a training as IT-specialist for systemintegration. This is nearly a network administrator.
Oh Aukey that’s a good brand. A USB B male to USB C Female would be needed to work with that Hub though. I can’t seem to find hubs with C female input. What would be preferred would be something like this:
I don’t want to pay an arm and a leg for one and I don’t want one from China that takes over 1 month to ship. I wish everything was USB C but we are in the middle of a transition period from micro B to the thunderbolt 3 standard. If I do an upgrade down the line (a year or two) I can go USB C. Meanwhile I just need to get that huge battery mounted and the setup working. I can temporary use frebie USB 2 unpowered hubs to make it work. Speaking of networking I might just buy a 4in antenna and externally mounting it. Then the signal will not be bouncing in a little Faraway Cage. The stock antenna is ok but signal strength is not quite ideal. I should draw up a wiring diagram for reference (including adapters)I will upload it when I get done. If I get it done then I can make a guide on “DIY lunchbox PC” or similar. Thanks for the eadvice and tips @SAi84 you have been a big help.
I dont’t think that two of these adapters for 5.99 $ is expensisve.
For the networking would I use a GL-iNet router. They are very small, are usb powered and can hold two different configurations. So you can seperate your “network” from the outtside and share only what you want.
@RaspberryPiGuy Yes we should move this topic in the other category. But when I remember right, I created it in the Projects catecory.
