Larry's Notebook

August 21, 2014

Tweet from @DSPEmbedded

Filed under: Uncategorized — Lawrence Yang @ 9:47 AM

Roundup of Software Defined Radios #SDR via @rtlsdrblog

Sent from Echofon –

-> Larry

sent from my smartphone

August 11, 2014

HOPE X – RF and Cellular talks

Filed under: free and open source, hacker culture, networks, telecom, wireless — Lawrence Yang @ 2:48 PM

Community Owned and Operated Cellular Networks in Rural Mexico” – slides here. The presenters provide cellular service to rural Mexican communally governed communities.

The next day, the presenters had a workshop on “How to Build and Run Your Own Cellular Network“.

The equipment is less than ten thousand US dollars, running open source software. Its fairly small and easily placed on a tree or bamboo. There is quite a bit of software work to be done, especially services that involve interfacing with the publicly switched telephone and cellular network (PSTN).

Building an Open Source Cellular Network at Burning Man” by Geeks Without Borders - slides here. The presenters talk about how they provided service for a community of fifty thousand who appear overnight. Burning Man provides a good way for experimenting and testing for scenarios such as disasters and refugee camps.


HOPE X: Citizens Band Microwave Spectrum And Free Internet For All – Citizens Broadband Radio Service, with lightning talk transcript and slides at – I missed this talk, but am including it since I found it interesting.

Solve the Hard Problem

Filed under: Uncategorized — Lawrence Yang @ 11:45 AM

“Smart people” tackle the “hard” problems, and the hard problems involve a lot of math, “hard” science, and empirical evidence. Well listen, J. Random Hacker, if you’re so goddamn smart, why haven’t you built a tool that makes it easy for people to encrypt their email yet? Why is adoption the major barrier to secure communications? Why haven’t the tools you’ve built evened out the digital divide? Is the hard problem infrastructure scaling or the Traveling Salesman problem, or is the really hard problem dealing with the people you could never get to understand what you’re doing?”

June 30, 2014

Programming Perl in 2034

Filed under: engineering, Perl, programming — Lawrence Yang @ 9:39 AM

Charlie Stross – ‎Keynote‎ – YouTube.

Charlie Stross’s keynote talk talk: technology 100 years ago and 20 years into the future – compare and contrast transportation technology with information technology.

June 27, 2014

Recent Readings 2014 Week 24

Filed under: Uncategorized — Lawrence Yang @ 2:51 PM

People are motivated by the sense that they are building something. What they’re building does not seem to be particularly important. 

What does seem to matter is that people have a consistent sense that each problem they solve somehow “builds on” the set of problems they have solved in the past.  With this “sense of meaning” intact, people will happily work very hard so long as their other basic needs are taken care of.

Without the “sense of meaning,” no amount of coercion or money will get people to solve problems in a creative fashion.


table of user/subscribers for various information and telecom services

“Seven-point-one billion mobile phone subscriptions means one subscription for every person on the planet. But it’s only gonna go up, up, up — in Europe they’ve already got three mobile accounts for every two living people.” – Bruce Sterling





June 2, 2014

Recent Readings: 2014 Week 22

You may not control all the events that happen to you, but you can decide not to be reduced by them.
– Maya Angelou

Map of the fifteen node ARPANET in 1971, redrawn by Janet Abbate from Bolt, Beranek and Newman’s original.


Off Hours

May 30, 2014

Recent Readings: 2014 Week 13

Everything Will Be Alright*

Working for a Living:


Not Working as Designed:

March 4, 2014

Recent Readings: 2014 Week 09

Filed under: C/C++, embedded systems, microcontroller, telecom, Uncategorized, wireless — Lawrence Yang @ 12:38 PM

Two large FM two-way units in the trunk of an automobile, built by Motorola in 1940. Two-way radio’s first use was with municipal police and fire departments..



Subcribe to Embedded Systems Weekly, curated by @embedsys

February 25, 2014

Goto Apologizes for Goto Fail (Comic) | Re/code

Filed under: Uncategorized — Lawrence Yang @ 3:14 PM

Goto Apologizes for Goto Fail (Comic) | Re/code.

January 31, 2014

Recent Readings: 2014 Week 4

Society and Policy:



Embedded Development:

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