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Portland Linux/Unix Group: Reading wireless temperature sensors with RTL-SDR and rtl_433

Portland State University Fourth Avenue Building (FAB) Room FAB 86-01
1900 Southwest 4th Avenue
Portland, OR 97201, US (map)

ATTENTION! Thanks to a new security policy, attendees will need to enter through the 1900 SW 4th entrance by 8PM, just North of the 1930 SW 4th that many of us have been using for years. (Do not use the entrance adjacent to Hawaiian Express, formerly Taco Del Mar)


Look for room 86-01 and note that the parking garage also provides access from a level below for $6



Portland Linux/Unix Group General Meeting Announcement

Who: Russell Senior What: Reading wireless temperature sensors with RTL-SDR and rtl_433
Where: PSU, 1900 SW 4th Ave. Room FAB 86-01 (Left Entrance, Lower Level)
When: Thursday, January 2nd, 2020 at 7pm
Why: The pursuit of technology freedom
Stream: http://pdxlinux.org/live

Russell has been measuring an array of temperature sensors in and around his house since October-ish 2011, primarily Dallas Semiconductor DS18B20 one-wire sensors (previously talk: 2013-06-06 Hacking on the Beagle Bone Black). For years, he's had a few Oregon Scientific wireless temperature sensors outside, but no way to log the temperatures for posterity. About a year ago, in early December 2018, he discovered a project called rtl_433 that uses a software defined radio to receive and decode the signals coming from these and similar sensors. so that they can be logged. This talk will describe a few of the things that are possible with rtl_433 and what Russell does and doesn't do with the data.

About Russell:

Russell has been a Linux user since 1992. He worked for a few decades doing data management, programming, and analysis for a small scientific consulting firm. Since 2005 he has been deeply involved in the Personal Telco Project and trying to bring about telecommunications in the users interests, while also hacking on router firmware. For two years, he's been involved in an active effort to bring publicly-owned fiber infrastructure to the Portland metro area (in furtherance of the Personal Telco goal). He has a possibly unnatural love for serial consoles and RS-232, but is too smitten to be ashamed. He describes himself as self-under-employed. Will work on Linux'y things for money. Will work on Science'y/measurement'y things for money, as long as Linux is or can be involved somehow. He's very interested in trying to solve your telemetry problems with off-the-shelf wifi equipment and some elbow grease, if you've got some.

Many will head to the Lucky Lab at 1945 NW Quimby St. after the meeting.

Ride shares to the Lucky Lab available

PLUG is open to everyone and does not tolerate abusive behavior on its mailing lists or at its meetings.