Talking of maplin. If anyone on this instance and in the UK wants any RP-crimp SMA plugs or sockets then let me know.
I’ll happily send a few (no charge!) to anyone who needs them. I think reverse polarity is generally used for WiFi gear. I have a bunch of each for RG174 and RG58.
I also have a load of other random connectors, just nothing particularly common, so if you’re looking for something odd then let me know and I’ll see what I have.
Finally got my Pi synced to the PPS pin on the GPS I plugged into it. It's currently indoors with a small ceramic antenna, but works.
Software is gpsd and chrony, hardware is a cheap ublox board with a hirose u.fl connector and a patch antenna, soon to be replaced with a chinese outdoor antenna.
The Pi is a model b, configured to use the standard UART (ttyS0) not the better one (ttyACM0), but that might need to change.
I think it'll be cool to add a little display with position/clock info.
Had a lot of fun on the club’s fox hunt last night. It was my first, so I basically went to see how it worked. My team failed (mostly due to a lack of decent gear I reckon) but I will know what to do next time! First on the list is getting my tape measure antenna working.
Looking forward to it!
Spent a while yesterday receiving SSTV images on 20m (14.230 MHz), some pretty scary and really interesting.
I don't think anyone would deny that it's a pretty weird way to communicate, super fun though. Next I need to work out how to TX with qsstv (but first, family stuff)!
Just my shiny new µArt (https://www.crowdsupply.com/pylo/muart) to flash some custom firmware on a couple of cheap Sonoff wifi switches (https://www.banggood.com/DIY-Wi-Fi-Wireless-Switch-For-Smart-Home-With-ABS-Shell-p-1019971.html). They now work with Alexa without some dodgy third party cloud service.
It's funny that the USB UART I used cost considerably more than the devices!
Didn’t manage to do everything I wanted to this weekend, but I did manage to build my £3 crystal tester, and this SOTABEAMS end fed tuner, plus wire it up ready for a test a tune on 40m.
I also managed to make up some test resistors to calibrate my cheap SARK 100 antenna analyser clone.
Actually I’m pretty happy with that list of stuff!🤔
I’ve added some quick and dirty limit switches and a z-probe to my 2417 CNC, and also updated the GRBL version to the latest!
I’ve learned a lot about how it works and think I might almost be ready to use it in anger. Of course I still have a more beefy spindle to install and some new connectors to crimp...
Had a lot of fun climbing Toubkal in Morocco last week, but didn't take a #amateurradio as getting licensing sorted looked complicated and I was worried about customs (also I don't speak Arabic or French)!
The altitude made it hard work, but it was totally worth it.
Managed to repair my PSU by replacing the faulty pass transistor, and all the others for good measure.
Now added “research overvoltage protection circuits” to my never ending todo list! Looks like there are plenty of options.
Super happy the repair worked and there doesn’t seem to have been anything else wrong with it. 🙌