𝗟𝘂𝗶𝗷𝘁𝗲𝗻 𝗹𝗼𝗼𝗽𝘁 '𝗶𝗻 𝗲𝗲𝗻 𝗿𝗼𝗲𝘀' 𝗻𝗮𝗮𝗿 𝗼𝗹𝘆𝗺𝗽𝗶𝘀𝗰𝗵𝗲 𝗺𝗮𝗿𝗮𝘁𝗵𝗼𝗻𝗹𝗶𝗺𝗶𝗲𝘁
Als jonge atlete durfde Anne Luijten niet eens te denken aan de Olympische Spelen. "Die lagen niet binnen mijn bereik", dacht ik altijd. Tot zondag in de marathon van Amsterdam, waar de 29-jarige Arnhemse hardloopster ruim vier minuten sneller liep dan ooit op de 42,195 kilometer en met een dik...
https://www.rtlnieuws.nl/sport/artikel/5413262/luijten-loopt-een-roes-naar-olympische-marathonlimiet
Als jonge atlete durfde Anne Luijten niet eens te denken aan de Olympische Spelen. "Die lagen niet binnen mijn bereik", dacht ik altijd. Tot zondag in de marathon van Amsterdam, waar de 29-jarige Arnhemse hardloopster ruim vier minuten sneller liep dan ooit op de 42,195 kilometer en met een dik persoonlijk record van 2.26.36 onder de limiet dook voor de Olympische Spelen van 2024 in Parijs.
Finished most of the #ROES prototype board. Never have I been so excited to solder something, specifically the shield. After several years of hard work putting that shield on was a trophy! Its something that has collected dust for periods too and this is the second version I went full cycle on.
For those wondering this is the RF analogy board for an advanced highly percise SWR meter with Network-analyzer like capabilities built into an #Arduino shield. It measures a radio signals forward and reverse properties and compares them including complex impedance, complex reflection coefficient, SWR and much more. with two of them and a zigbee you can even operate one at your transmitter and the other at the antenna end and get both readouts in the shack. Cool stuff!
The yellow shielded wire wasnt working so I added a very tiny red wire instead. The final product wont need this and it may introduce some issues with the prototyping, lets hope not.
If you want to see more pictures of the project, including the GUI demo running or the earlier v1 version just check out the #ROES hashtag.
#electronics #EE #RF #Radio #HamRadio #amateurradio #Science #ElectricalEngineering #Arduino
These components are sooooo tiny, I really hate soldering them (0402 SMT mostly). Here is one compared to the tip of a mechanical pencil to give you an idea.
Of course the one chip i needed to roast with the soldering iron repeatedly in order to fix a stubborn solder bridge is the same chip that costs 30$ each, and the last chip i solder.. FML.
Oh well assuming i didnt fry this thing its actually coming along nicely. The missing trace i had to hack in is ugly but the fact i got it soldered on at all (had to scrape away some solder mask to get to a via) is impressive. Lets hope this thing works when im all done...