#roes — Public Fediverse posts

Red deer roes.
#photography #nature #naturephotography #fineartphotography #reddeer #roes #animals

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

#Luijten #OlympischeMarathonlimiet #Roes

@ad6dm If you are interested in a more advanced version of digital meter that measures SWR **and** complex impedance check out the #ROES project. It is open source.

@nivex I am one, check out my ROES project by looking at the #ROES hashtag.its a VNA-like SWR meter using an arduino at the heart.

@Electronics

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

@Electronics

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.

#electonics #HamRadio #amateurradio #rf #ee #Arduino #Roes

@Electronics

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...

#electonics #HamRadio #amateurradio #rf #ee #Arduino #Roes

@Electronics
About to start soldering up my #ROES prototype. This will be fun.

#Electronics #RF #EE #HamRadio #AmaetureRadio

@Electronics

Wanted to share my prototype design for the #ROES meter with the Electronics Group.

About a month ago I sent the boards off to be printed for a prototype run and recently got them in. So V2.0 is soon to be officially released (though I may do a minor revision before printing up a large number of boards).

Attached are some screenshots of the final schematic and some renderings of what the boards will look like when its done. Its a 4 layer board though so many of the traces are internal.

You can find the files for this, which will be released as open-source, here:

https://git.qoto.org/roes/roes-hardware/

#Ham #HamRadio #Radio #RF #EE #Electronics #ElectricalEngineering #Science

So for those of you following my #ROES project ("Ridiculously Over Engineered SWR Meter") which I've been active on the past few days I finally just sent the boards off to be printed for a prototype run. so V2.0 is officially released (though I may do a minor revision before printing up a large number of boards).

Attached are some screenshots of the final schematic and some renderings of what the boards will look like when its done. Its a 4 layer board though so many of the traces are internal.

You can find the files for this, which will be released as open-source, here:

https://git.qoto.org/roes/roes-hardware/

#Ham #HamRadio #Radio #RF #EE #Electronics #ElectricalEngineering #Science

So I fixed a few more mistakes in the the V2 schematic for my "Ridiculously Over Engineered SWR Meter". Attached is the new schematic.

You can find the files for this, which will be released as open-source, here:

https://git.qoto.org/roes/roes-hardware/

#Ham #HamRadio #Radio #RF #EE #Electronics #ElectricalEngineering #Science #ROES

For those following along I have made some minor corrections to the V2 schematic for my "Ridiculously Over Engineered SWR Meter". Attached is the new schematic.

You can find the files for this, which will be released as open-source, here:

https://git.qoto.org/roes/roes-hardware/

#Ham #HamRadio #Radio #RF #EE #Electronics #ElectricalEngineering #Science #ROES

I think I may have finally finished the Version 2 Schematic of my "Ridiculously Over Engineered SWR meter" or ROES for short.

Its basically an Arduino based SWR meter with an LCD display (not depicted here as that is a seperate shield). But it provides all the functions of a Vector Network Analyzer (VNA) and goes way beyond your typical SWR meter. The only thing it doesn't have that a VNA would have is a function generator, as it relies on the transmitter to do that.

Generally you'd hook a directional coupler into your feedline (I'll be providing that as a seperate kit) and then tie the forward and reflected ports into this shield.

#Ham #HamRadio #Radio #RF #EE #Electronics #ElectricalEngineering #Science #ROES

A picture of an early prototype for my ROES SWR meter and VNC. I later had to completely redesign the hardware for version 1.0, but the UI is still pretty similar.

This week I hope to add a frequency counter to the design and work towards a v2.

PS: See my pinned post to see v1 in action along with the analog board. The post also includes the v1 Schematic

#EE #Electronics #Ham #HamRadio #RF #SCience #Engineering #ElectricalEngineering #ROES #SWR