On the programming logic side of things, have you looked into using a formal finite state machine model - for example the module called "transitions" at https://github.com/pytransitions/transitions ? It might save you a bit of grief in keeping track of the states. This should help me clean up the c...

Have you looked into using interrupts instead of loops and sleep? I do not use loops and sleeps in a program that runs 24/7, except for upgrades. I started by testing RPi.GPIO's `add_event_detect` interrupt which runs a callback on detecting bidirectional change of state. The callback was being run...

Don't know why the callback is unreliable - have you tried putting print statements in the function to see what's happening. i.e. is the function being called but the input has changed when it does the logic, or is it turning on and off very quickly? It's a rather indirect help but over the years I...

Hey everyone, I'm trying to create an automated robotic machine which detects various signals from operator and acts accordingly. It has 4 inputs (3 switches, 1 signal receiver) and 8 outputs (4 LEDs, 1 beeper, 1 gear fwd/bwd, 1 motor power, 1 transmitter ). I'm using the python RPi.GPIO library to ...

You guys have done a really good job with Nimbus. Easy to set up and use. It was my first cloud installation on the RPi2 and it worked well.

I was testing my Raspberry Pi 2 Model B with an Apache web server . The Pi itself is overclocked using the Moderate Preset. It works reliably 24x7. I recently conducted Load Testing on the apache server and it held up pretty good, better than I expected. 10000 clients in 1 minute and only 169 timeou...

Hi everyone :) I recently bought a Raspberry Pi 2 and decided to create a web server and cloud storage. I have since deployed ownCloud and more importantly SEAFILE Open Source cloud storage with client-side encryption and secure key management. I have some extra space and resources, so I would like ...

I got it working. Followed http://raspberrypihobbyist.blogspot.com/2013/07/running-from-external-hard-drive.html to get Rasbian to run off USB HDD. I only created two partitions however. Then http://www.techjawab.com/2014/08/how-to-setup-owncloud-7-on-raspberry-pi.html to install OwnCloud. I downlo...

Hi, I also just finished setting up my Raspberry Pi with ownCloud (https://pavinjoseph.com). I'm running my Pi off of the SD card itself but my ownCloud data storage is on an external HDD. I can tell you that it is quite fast. The data upload, download and everything else works pretty much as fast a...

Hi. Thanks a lot for this tutorial. I'm getting Error: 789 "The L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer" when attempting to connect from my Windows 8.1 64 bit PC. I am behind a router and have forwa...