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Julian5

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Posts posted by Julian5


  1. On 8/22/2019 at 4:34 PM, Jacobtechtips? said:

    Hey man, this is sooo cool. I'm just wondering, was  your sattelite on the 'Look Ma, No Hands' Electron rocket? The one that launched on the 19th of august?

     

    If so, i just watched it and it was really cool :)

    Hey! We just integrated the satellite two days ago, we should be on one of the next electron launches this year. Here are a couple pics of the last months which has ben full of testing at vibration, thermovac, emc facilites etc. lots of work but its all done! our twitter @fossasys has everything updated

    70631162_2507073336190300_7997810974436360192_n.jpg

    IMG_4450.JPG

    da2c92f62db4acab577f2a547175c632.jpg

    324f562e39ea395037c5ec9d63e4ec89.jpg


  2. On 1/11/2019 at 4:44 AM, ShredBird said:

    Congrats!  The satellite I worked on just went up on that last Rocket Labs launch!  Good luck with the remaining hurdles! :)

    Great Stuff! We are number 8 for launch in q3 of 2019.

     

    On 1/12/2019 at 4:12 AM, ThatDoggo said:

    This sounds like a great project and I would love to see it get off the ground and into space.

    Thanks!

     

    6 hours ago, YiGiT353 said:

    I did something very similar using just BC547 transistors.

    Pretty easy to do! Final satellite does not use it but it's a cool concept.


  3. Gave the talk along with a workshop on open source aerospace missions at the European Space Agency, We are having future meetings with them and a couple universities so it seems there is general interest! The engineering model is finished with deployable solar panels and will be launching this week on a weather balloon to test the telecommunications.

    DSC_0485.thumb.JPG.42e809060ac4c159408791801ebca9c0.JPGDn3tjZQX0AMcyT4.jpg.00bbb39cc96cfc9aee0b85339acc4e1a.jpgDSCF5548.thumb.JPG.0cd993183b82793f1f2f50e59bdde161.JPG

    Right center in the middle row (holding the satellite)

     

    On 4/11/2017 at 4:02 PM, Ryan_Vickers said:

    I saw the title and was like "no... that can't possibly be what I think it is" but sure enough...

     

    Sounds like you're not at this stage yet but any thought as to how you'll get it in orbit?  balloons are great for going straight up but the stuff they carry tends to come straight back down after they pop :P

     

    Funny to think this time last year we where joking around on launching and now We are a couple weeks away from launching a launch contract with a major launch provider :)  


  4. On 15/9/2018 at 3:51 AM, Nicholas Smith said:

    Those pcbs are so cool.Hope you could succeed.

    Thanks Nicholas! European Space agency talk is on Monday and we are close to signing a launch for summer of 2019. Seems amazing how we went from a little PCB designed on Sunday evening to a working prototype possibly going to space, I would have never imagined that this would have ever grown to where it is now  :D

    We are still looking for help by the way!

     

    I'll keep you guys informed. Thanks,

    Julian


  5. On 9/5/2018 at 7:36 PM, JSFetzik said:

    N9KUB Here. 

     

    Got my Technician license here in the US back in the early 90's, when it was a brand new thing. Took the test on a dare when visiting a friend on the weekend he happened to be taking one of the higher level exams. My college degree was in electronics so they figured I should be able to pass the first couple tests. I almost passed the one after Tech.

     

    Had a Yaesu handie talkie for a couple years, but never got all that involved. Haven't done any HAM stuff since the mid 90's.

    Ah nice, seems like the exams are pretty easy to pass with common electronics knowledge. Finally got my Callsign: EA4HCD, don't plan on doing much HAM stuff but at least now I can start coordinating our satellite with the IARU!


  6. 53 minutes ago, pipnina said:

    I got one of those about two months ago (Nooelec) and it fried itself, as others had said happened to them. I figured that more expensive forms would be needed to get something "decent" so I dropped it. My intention was for radio astronomy however and not listening to radio communications. (i.e. mapping the hydrogen gas in our galaxy)

     

    I'm not entirely sure if asking about alternatives is exactly on-topic, but I suppose it's relevant to the general subject of "amateur radio"?

    Wow, I'll be honest I have never heard of mapping the hydrogen gas in our galaxy but it sounds interesting. I can probably guess that a 10$ has nowhere near the sensibility needed to do that. You'd probably need something more precise like a LimeSDR or an XTRX. I can also imagine you need to be quite far from civilization to pick up those radio waves.


  7. Just passed the exam, pretty damn weird questions but since its multiple choice and you only need to get 50% right then it was an easy pass.

    Waiting for my callsign rn and I have been told I need to set up an amateur radio association..... More paperwork! xD


  8. 4 minutes ago, Radium_Angel said:

    I really cannot afford the gear, but I listen to number stations through webSDR

    http://websdr.ewi.utwente.nl:8901/

     

    A station out of the Netherlands. Wish I could get a good setup in physical form, but the 'net software version does for me now.

    I also love hearing things like German disco, or the BBC

    Thankfully nowadays you can pick stuff up with a 10$ USB SDR and a diy tape yagi, these sdr websites are great though and I have used them too besides my home setup.

    I didn't actually have the intention of doing anything related to amateurs communication since the only reason I am getting the exam is to request a license from the IARU to launch a picosatellite project in orbit, it seems really interesting and fascination though and I'm sure I could get some stuff to work with my current setup.

    3 minutes ago, Netivity said:

    We have the option here to do CEPT HAREC  and so do overseas visitors. 

     

    That station location is where I was born!

     

    The more you know :) 

     

     

    Ah, we only have the HAREC option, its a universal pass to all the bands at every level.

    Interesting haha!


  9. 3 minutes ago, Netivity said:

    Awesome mate!

     

    I have been meaning to do the exam for yonks now but just haven't gotten around to it.

     

    Let me know how you go!

     

     Cheers,

    Thanks mate!

    Here in Spain its the HAREC exam, not sure if Australia has adopted the CEPT 61-02 recommendation but if so I think its the same exam, I'm no RF expert and just did the online test questions today, seems to be common sense electronics to be honest.

    Hopefully its as easy as they say it is!

     

    Thanks mate


  10. Was Just wondering if there where any HAM radio Operators out there on the LTT forum, Seems like the mean age is slightly higher than that of the forum but who knows!

    At least in europe it looks like it is slowly fading away.

    My Exam is in 7 hours, hopefully a pass....

     

     

    Thanks!


  11. 8 hours ago, makersmuse said:

    There is no way of making a workable machine for that budget in 2018... sorry. The lowest I would consider is the Tronxy X1 kit at about ~$150 once you buy a spool of filament to use on it.

    I can personally say this is not the case, I can't post ebay links on here but this 100$ 3D printer I bought performs better than 300$+ 3d printers I have used with proper calibration and tuning.

     

    Prints look great and it is well worth it just for parts tbh, In Spain these cost 92~$ shipped with UPS to your house free.

     

     

    0006047_kit-impresora-3d-ctc-prusa-i3_600.jpeg.63678583b3348aacbc6f043e41020b4d.jpeg


  12. Just now, Enderman said:

    These geniuses used an AC inverter in order to turn DC into AC so that they can convert the AC back into DC.

     

    Then they use a relay to turn the power on and off which completely negates the need of the generator powering the switch.

     

    Wow. I admit I am quite impressed with how bad this was.

     

    https://media.giphy.com/media/bkklBjAmlYjv2/giphy.gif

    I Agree, simplest would have been direct 12v into the switch or a sensor such as an Arduino connected to the pc or a relay.


  13. So I am an avid aeroplane spotter and have always used my default 18-105mm lens with my Nikon D3200, For long range pics at the airport though with distances in excess of 3km the digital cropping is not enough. I am trying to buy a lens but I am not really sure what to expect or how they perform, I normally shoot in broad daylight and don't care much about "bokeh". I also use autofocus for fast moving situations and the default Nikon 18-55 lenses seem really slow.

    I have a very very tight budget of 150-200€ MAX and I am looking for used 300mm lenses.

    Here are a couple I have found on a Spanish used item website that  I can probably reduce the price on.

    https://es.wallapop.com/item/objetivo-tamrom-70-300mm-183509660

    https://es.wallapop.com/item/objetivo-fotografia-180553245

    https://es.wallapop.com/item/tamron-28-300mm-255346867

    https://es.wallapop.com/item/objetivo-sigma-dg-70-300-146239408

    https://es.wallapop.com/item/objetivo-sigma-70-300-apo-dg-macro-f4-5-6-nikon-255516685

    https://es.wallapop.com/item/nikon-dx-vr-af-p-nikkor-70-300mm-1-4-5-6-3g-ed-236117166

     

    Thanks!

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