Setup Dropbox to sync on a schedule

click here for the Mac version

Currently I am living in a part of rural Virginia, where the only option for internet is ViaSat internet satellite.  The service has its ups and downs, but the worst part are the data caps, and they are cell phone low.  In fact the highest plan I can buy is 25GB of data transfer and that is about $140 per month.

One thing that I really miss is the ability to have my Dropbox synced at all times.  The data transfers can be high if I am putting videos and photos into my Dropbox.  Dropbox’s application currently allows you to throttle the bandwidth, but it’s either on or off…

ViaSat does offer something nice…  every morning from Midnight to 5AM they shut off the meters allowing unlimited usage.  I decided to leverage this and make Dropbox sync only during this free window.

Doing this boils down to three things.

1.  Find the Windows Task Scheduler.
2.  Schedule a daily task to START Dropbox.exe at 12AM.
3.  Schedule a daily task to STOP Dropbox.exe at 5AM.

1. Find the Windows Task Scheduler

Click into Administrative tools in the control panel

1.1 Click into Administrative tools in the control panel

Here it is. The elusive task scheduler (well not really... there are a bunch of ways to find it.)

1.2 Here it is. The elusive task scheduler (well not really… there are a bunch of ways to find it.)

 

2. Schedule a daily task to START Dropbox.exe at 12AM.

2.1 Click Create task to ummm, create a new schedule task.

2.1 Click Create task to ummm, create a new schedule task.

1. Name the Task. 2. Set to run whether the user is logged on or not.

2.2. Name the Task.
2.3  Set to run whether the user is logged on or not.

1. Click button to create a new trigger 2. Set New trigger Settings to "Daily" with a start time of 12:00AM since I want it to trigger on every morning at Midnight.

2.4  Click button to create a new trigger
2.5  Set New trigger Settings to “Daily” with a start time of 12:00 AM since I want it to trigger on every morning at Midnight.

1. Click button to create a new Action. 2. Browse to the program to launch (in this case for me its Dropbox.exe)

2.6  Click button to create a new Action.
2.7  Browse to the program to launch (in this case for me its Dropbox.exe)

3. Schedule a daily task to STOP Dropbox.exe at 5AM.

Since the scheduler only “Starts” programs, this requires us to write a tiny batch file that when started will kill Dropbox.exe.

Place the following

TASKKILL /F /IM "Dropbox.exe"

into a file named whatever your want .bat, in my case I called it ‘stopdropbox.bat’

Simple batch file to kill the Dropbox.exe process.

Simple batch file to kill the Dropbox.exe process.

Now lets just make another task schedule to Stop Dropbox.

Stop Drop Box Scheduled Task General Tab

Just like above, name this something and set it to run even when the user isn’t logged in.

Stop Drop Box Scheduled Task TriggerTab

Same as above except we are setting the trigger for 5AM, which for me is the end of the “FreeTime” window.

Stop Drop Box Scheduled Task ActionTab

As above, except here we are pointing to our little batch file that will kill the Dropbox.exe process.

Both Schedules set

Ahhh. Both tasks scheduled.

I hope this helps somebody out there.  If you wish Dropbox had some custom scheduling options built into their sync engine, or just appreciate the kludge I had to endure, please comment below.

LT-1303-5 with new inductor

 

Based on some ideas in the eevblog forums, I replaced the TDK inductor I used in the first videos with a Sumida RCH-855np.  The sumida specifically says…

Applications
• Ideally used in Printers, LCD TV, DVD, Copy Machine, Mainboard of the compounding machines etc. as DC-DC Converter inductors.

Since the TDK data sheet was a bit ambiguous and stated it was for “Power lines” there was a theory that the TDK may have actually been a choke.  Turns out the results show pretty much the same performance.  I was unable to get above 67% efficiency.  I would really like to see someone do better with this chip on video.


I think my next step will be to but the Adafruit kit for the minty boost, which uses the LT1302 chip in its design.  I am curious to see the results on a professionally designed pcb with a similar chip.

Followup to the LT1303-5 DC to DC Boost Converter

Per  many recommendations by the forums users over at eevblog.com, I made a few modifications to the boost converter circuit.  I increased the size of the output filter cap, and reduced the length of the conductors.  I picked up 5% additional efficiency but still fall short of the 80+ percent in the data sheet.

LT1303 Efficiency dataRevised for 17mA out.

 

LT1303-5 two cell to 5V Boost converter supply

In this video I put together a small circuit to test out the LT1303-5.  I am not getting the efficiency numbers in the data sheet.  See the attachment below for the figures I recorded.  Granted I don’t know what Im doing, so if you spot the issue, please let me know… and be gentle.  Thx, JZJ

 

 

LT1303 Efficiency data

LT1303-5 boost regulator datasheet