Recent Blog Posts

25 Nov 2015 shimniok   » (Journeyer)

Cyber Monday, 2015

Bot Thoughts

20% off - 80CFB16

10% off - 6B54471

Coupons good per sale for any one item from Monday, Nov 30 thru Friday, Dec 6, 2015.


Happy Thanksgiving from Pololu! Our Black Friday/Cyber Monday sale is almost here! We will be offering huge discounts on hundreds of products and automatically upgrading you to the next best price break for everything else. We will also have some great limited-quantity doorbusters. The special offers become active Wednesday morning (November 25) at midnight PST (3:00 AM EST/08:00 UTC), and the sale runs through Cyber Monday (November 30), ending at 11:59 PM PST. More information is coming soon, including a full list of the doorbusters and sale items, but for now, here is a sampling of the discounts.


Cyber Monday and all its glory is nearly upon us! For this year's celebration of festively-timed discounts, we're putting a huge selection of some of this year's best-selling and most popular products on sale for one day only – from 10-40% off! Check out our Cyber Monday page to get the scoop on the day's special deals!

Syndicated 2015-11-25 13:00:00 (Updated 2015-11-25 16:50:01) from Michael Shimniok

6 Nov 2015 wedesoft   » (Master)

Arduino hello world

Making an LED blink with the Arduino micro controller board

Syndicated 2015-11-06 00:00:00 from Jan Wedekind

26 Oct 2015 steve   » (Master)

Triumph of the Fail Whale

Fail Whale by Matthias Töpfer (CC-BY-NC)

Early social networks had status fields; little boxes where you posted a short status line about your current emotional state (“I’m bored”) and maybe an emoticon. As social networks proliferated, Twitter came along, based on the useful idea that you could enter your status one time and have it automatically sync to anywhere else you wanted. I adopted Twitter relatively early on and it was a great time saver.

It was also easy to generate tweets from programs. When I published a new blog post, like this one, WordPress generated a tweet; the tweet then appeared as my status on Facebook, Google Plus, LinkedIn, on my personal websites (even on Myspace back in the day). Flickr and other sites could generate tweets to reflect current activity and I often wrote programs for websites I developed that generated tweets. For example, I wrote a bot for that tabulated the number wiki edits each week and posted it as a tweet. Twitter was the universal plumbing of the social media universe.

Gradually, Twitter has stopped talking to most sites. One of the earliest ones I remember this happening with was LinkedIn. One day my tweets stopped appearing on my LinkedIn profile status. LinkedIn claimed Twitter had changed their policy and no longer allowed LinkedIn to display tweets. Twitter claimed LinkedIn changed their policy. Sometime later, Google Plus started blocking Twitter. Then Twitter dropped their RSS feeds and created a new system that allowed them to block usage on personal websites unless you gave them your mobile phone number for tracking and demographics purposes. The final straw for me is that Facebook, while still allowing me to sync my Facebook status from Twitter, considers tweets as second class posts. If I post a status update via Twitter maybe 1% of my Facebook followers will ever see it. If post directly or from other, non-Twitter services such as Instagram, a much larger percentage of my followers see it.

For me, the sole purpose of Twitter is syncing my status with other social networks, so Twitter is now next to useless. I recently turned off my Facebook to Twitter sync. I think it’s not just me. Twitter seems to be largely a wasteland of lost status postings these days; an endless stream of status messages flying into a vacuum with no humans left to read them. I’ll probably keep posting there out of habit for a while longer but I think Twitter’s 15 minutes of fame are winding down.

Syndicated 2015-10-26 21:39:54 from Steevithak of the Internet

20 Oct 2015 Flanneltron   » (Journeyer)

2014: Postmortem

Oh no! I forgot to post a personal postmortem 1 for the year 2014 like I did for the previous year! Oh well, here it is ten months late. What Went Right Started a new day job at a biotech company called GnuBIO, now the skunkworks division of Bio-Rad. Essentially I write robotics code for […]

Syndicated 2015-10-20 20:04:53 from SynapticNulship

10 Sep 2015 svo   » (Master)

Flexible LED filaments driver

A driver for flexible white LEDs

Драйвер гибких белых светодиодов

Driver para los LED blancos flexibles

Syndicated 2015-09-10 21:27:21 from svo's interactive persuasion vehicle

9 Aug 2015 Petar.Kormushev   » (Master)

Online Regeneration of Bipedal Walking Gait Optimizing Footstep Placement and Timing

The video presents experiments during which a humanoid robot is subjected to external pushes and recovers stability by changing the step placement and duration.

It starts from showing effectiveness of the feedback controller during stepping in place. Then it continues to present how the developed algorithm regenerates the step placement and duration to regain stability after lateral pushes. It concludes with showing how the algorithm works during forward locomotion.