Hi, Tim gave us a demo of the restic back program, which looked very nice. https://restic.net
The Greaseweazle is a small PCB with an Arm Cortex-M4 in an Artery AT32F403 and a couple of connectors for a floppy drive and a USB connector. It reads and writes flux levels to the drive and is controlled by its software which runs at the other end of the USB connection. https://github.com/keirf/Greaseweazle/#readme https://i.ebayimg.com/images/g/W5wAAOSwQYFgyioe/s-l1600.jpg LibDsk is a library and suite of programs for interpreting old floppy-disk formats. http://www.seasip.info/Unix/LibDsk/ rtl_433 receives and displays data from 433 MHz devices, and other frequencies too now. https://github.com/merbanan/rtl_433#readme https://raw.githubusercontent.com/merbanan/rtl_433/master/docs/screenshot.png rtl_power records radio to a CSV file for later plotting as a heat map over time × frequency. http://kmkeen.com/rtl-power/ Here's a nice example which has been labelled. http://kmkeen.com/rtl-power/tholin_rtlsdr.png An analysis of a 433 MHz transmission which shows the automatic gain control, and how the VirtualWire library for the Arduino seems to be wrong. More nice diagrams. https://www.ty-penguin.org.uk/~auj/blog/2021/10/01/rxb6-receiver/ -- Cheers, Ralph. -- Next meeting: Online, Jitsi, Tuesday, 2021-11-02 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
