dps

Right now, the Android app shows the current uptime and system load on the Raspberry Pi in the title bar. It does this by polling a URL which is handled by the PiUi Supervisor (separate python app from your main app). As you can see on github, the supervisor can also list and stop/start apps - I have feature enhancements to use all this planned for Android and yes, I'm keen to expose on iOS in future too.

The price is exorbitant compared to the compute cost associated with each request, so let's assume that the value you provide here is that every other developer doesn't have to invest the setup time to build it themselves and keep it running smoothly.

I'm a developer, which I think everyone in your target market is, so let's assume I could probably roll my own version if I could dedicate a couple of days to it (that would be consistent with my previous experience). I'd expect you to set your pricing low enough that I should never even consider trying to roll my own, so low I never even bother to lookup the docs to see how hard it might be. As pseut says, the upper tiers are so expensive that you just motivated anyone considering that volume to go off and do the build/buy analysis.

I hope this is constructive feedback. There are lots of other good suggestions here on how to make your landing page convert better. If you take all the feedback on board, I do think you have a service that can provide value.

It's back up now.

Useful service, I would use it assuming availability is good (I have jerryrigged something similar myself in the past and it was a real pain in the ass to get working smoothly). Suggested pricing seems way off though (I know it's free right now) - how did you figure out what was reasonable?

I learned mostly thru trial and error with Linux as a teenager, but during my CS degree this course filled in some missing gaps:http://www.cl.cam.ac.uk/teaching/2005/UnixTools/

Really interesting! Here's the related paper: http://www.europhysicsnews.org/index.php?option=com_article&...

I'd love to try to reproduce the Young's double slits experiment at home with silcone droplet walkers! The paper says that the silicone oil is 20 times more viscous than water . Any idea of household oils with similar viscosities?

Don't miss the other great stuff on Ken's website. I particularly enjoyed:

The time I flew on the Enron corporate jet to meet Jeff Skilling https://www.kennethnorton.com/essays/enron.html

and I have been referencing this for a couple of years: https://www.kennethnorton.com/essays/leading_cross_functiona...

404

Nice idea tho

+1 Especially the "Programmer" who is hunched over typing up his written(!!) document and hanging with his 80's telephone.

Thanks for pointing this out, folks - I made a mistake in the original circuit diagram. It's now fixed.

Um, yes, it's going clickety clickety click - thanks HN!

I reinstated this with Mark Byer's permission. Since it was wiped off the face of the web for several years, code golfers might well be able to find some quick improvements to many of the solutions. Looking forward to hearing from you!

For those without time to check them out... paperplane.io is pretty much exactly the same as site44 except it's $9/mth. pancake.io is a little different - seems to be aimed at hosting markdown formatted files and allowing you to either link directly to them or embed a little widget on another site linking to the files you have hosted on dropbox (sorted by most recently edited etc)

I was struck by the Bucheit/Pirsig conjecture "Live in the future, then build what's missing." and the following paragraph regarding ideas that come out of folks experience at college. Pg encourages those readers who are still studying to take classes unrelated to their CS major so that they may see more problems worth solving, but what struck e about this paragraph was how much, for me, college was like living in the future. In the late nineties, I lived in an environment where every single member of my social circle had an always-on 10 Mbit connection to the Internet and spent inordinate amounts of time communicating via email, IM etc. It seems like no coincidence that so many successful Internet companies were born out of students of that era. I doubt that today's students encounter the future of much at all in their dorm rooms. Perhaps universities should be working hard to make sure that campus living is more like living in the future than setting up mobile app development courses, incubators etc etc.

Very timely! I found the article you reference http://andrewchen.co/2012/08/15/mobile-app-startups-are-fail... very interesting yesterday - being able to push major changes to application UI at "web speed" is a better way to launch and iterate. Downloading your new toolkit now...

Someone hit "publish" on the April Fools post instead of "save as draft".

Do you have plans for how to get rid of spam?

Yes, agreed - I do plan to try this next - just discovered this http://www.kickstarter.com/projects/peterseid/romo-the-smart... (not self driving :-( ) robot which communicates via the phone's audio jack which would work well in this project. Additionally, this code could easily be used to control a Romo, so I'll probably try to order one of those too - would make the set up much more reproducible for others if the 'car' is ready made.

A great question - I haven't actually measured it directly, but it's probably < 200ms (video feels 'live' when you watch it). The prediction step takes circa 20ms on a MacBook Air and the serial port runs at 9600 baud and needs to send a single byte, which will propagate very quickly. I'll see what instrumentation I can add to the video frame -> computer via wifi step.

The links:

http://blog.davidsingleton.org/nnrccar

https://github.com/dps/nnrccar

Dave Taht points out http://www.bufferbloat.net/ which looks very interesting!

I think this is a really good idea. Startup? PhD thesis?

Great idea. Your email address matching is case sensitive, you might want to fix that.