A week in which I’m probably going to walk the dog more than write. Monday 2020/06/15 Fixed a few bugs in some visualisation code I’ve been toying with on and off for several years. It can actually show the three projections of a volumetric data file now. Win. Now to re-work it to it’s possible …
Category Archives: electronics
De-capping ICs for fun and profit, but mostly fun.
Some time back, a friend @codfishcatfish was building a GPS disciplined oscillator for radio measurements. Part of the circuit uses a MAX232 device to interface the low voltage digital signals to a PC serial port. He found his cheap (from eBay) MAX232s got very hot and failed in use. It was obvious the devices were …
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Eclipse chasing
Can you really be an eclipse chaser if you’ve only actually chased one eclipse? My chased eclipse was August 1999 – south west England. Back in the mid 1980s I had a book of fascinating astronomical facts, it listed the dates of upcoming eclipses until the far-off Year 2000. I decided that I’d see that …
Interesting patterns
Doing a bit more snooping around the radio spectrum with the RTLSDR (My HackRF should be here tomorrow!) I spotted these patterns in the transmitted signals from DAB stations. I’m fairly sure these are not just moiré patterns. I expect they probably tell you something about the multiplexing of the signals in the transmission.
RTLSDR + MatLab 2014b
Horribly geeky post, more for my own information than anything. Might help others. After installing MatLab 2014b on OSX, I thought it might be fun to see if it’ll work with an RTLSDR dongle – if you’ve a license you can download a driver package for the MatLab communication toolbox from Mathworks (No, I’ll not …