saveitforparts
Robots And Lasers And Science Oh My! (Open Sauce 2024)
updated
This video was just a quick test of the latest Boondock version. This one has some features that I suggested, as well as things people suggested in teh comments from my prior video! Namely, it has more off-grid and offline features, and can be used without an internet connection or cloud tethering.
While I didn't test every feature, I found a couple more use cases for this tech. First, for unattended monitoring of an unknown frequency (in this case, a supposed ham repeater from 2012) to see if and what traffic is there. Second, to record and keyword-search a large amount of radio traffic, like from a police / fire scanner. If you're a reporter looking for newsworthy keywords on radio traffic, or want to keep an eye out for a certain name or address in scanner traffic, this could be a way to do it.
Thanks again to the Boondock Echo team for sending me one to try out!
Here's my previous video about the Boondock Echo: youtube.com/watch?v=HYZ3HJT-xr8&t=810s
You can find the project here: boondockecho.com
And more documentation here: docs.boondockecho.com/boondock-echo
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This video is just the first look at the thing, I will hopefully do more cool stuff with it in future videos.
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This video is sponsored by EcoFlow, who sent me the batteries for this project. You can find them at the links below:
bit.ly/4gBYOyp
amazon.com/dp/B0DCNJB1HH?maas=maas_adg_D0D712B636C9DF55FB07CC830E8DB9AA_afap_abs&ref_=aa_maas&tag=maas
Code: EF12VSAVEIT
#EcoFlow #12VLiFePO4Battery #12VoltageBattery
@EcoFlowTech: the link is youtube.com/@EcoFlowTech
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Some of the parts I used for this project include:
R/C module: amzn.to/3N03yQK
Timer: amzn.to/3zpL1ud
Strobe light: amzn.to/3zAAXym
Audio module: amzn.to/3TLeVzH
Relays: amzn.to/3U9iaS3
Reversing circuit: amzn.to/47FalJj
Solar battery bank: amzn.to/4gXQlWp
And of course I got a lot of random parts from ax-man.com
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I got the STF309 unit: greenworkstools.com/products/40v-cordless-string-trimmer-2111702
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(The cats have their own channel @donnyfluff )
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People keep confusing @peterfairlie2296 and I with each other, as we both have satellite-related content. I've been watching his videos on satellite telephone calls, so now that I have my own I just had to call him with it! I even tried to use a Flipper Zero, which Peter has showcased on his channel. Sadly the Flipper didn't work very well.
I also called someone who uses a Starlink phone connection, just to see what a ground to geostationary to ground to low-earth-orbit to ground connection sounds like. It was even more laggy, but the audio quality was great!
Finally, I tried the system from a moving vehicle. Unfortunately the audio quality was the worst when moving, either due to the antenna constantly moving to stay locked on the satellite, or due to the speakerphone, or both.
This is an Inmarsat / Glocom antenna using an L-band (~1500mhz) link to geostationary orbit. The lag time is pretty bad, especially when calling other satellite phones! It does work for Internet as well, but the service is slow, high-latency, and very overpriced. I wouldn't recommend using this for anything, as it's kind of old technology that can't compete with modern satellite systems. I just wanted to give it a try while it's still available.
You can find part 1 here:
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The G2+ has a really interesting command called "skymap", which appears to do the same thing as my microwave imaging code. If anyone knows more about this program, I'd be super interested to hear about it!
The G3 does not have a phone port, only a USB A jack. I have not been able to interface with this the way I could with the Tailgater brand's USB port. If anyone knows how I can get a debug console on a G3 Carryout, I'd love to know!
Here's an article I wrote for the AMSAT Journal about this project: saveitforparts.wordpress.com/2024/03/19/my-mini-radiotelescope-made-it-into-the-amsat-journal
My Python code for microwave imaging / radio astronomy with a Winegard dish: github.com/saveitforparts/Carryout-Radio-Telescope
And some more information about the adapter cables: saveitforparts.wordpress.com/2023/12/29/another-portable-radio-telescope
Cyberdeck build: youtu.be/bSJSktT07bo?si=5FXJxZcMkvKlDam1
Microwave imaging dish at Open Sauce 2024: youtu.be/7tK0WXkz45U?si=2zUbvbebTe77cKym
More Winegard G1 hacking: youtu.be/4a2HjE11DcQ?si=Z5CNqez3yBobZwVM
Original Tailgater microwave imager: youtu.be/lVOTZxNCgTM?si=4IfCjlBOvF8BKTjp
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You can find the Powersmart 4500W generator here:
bit.ly/3AUY4E9
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This is a Glocom (Hughes) GX-10, and uses the Inmarsat network of geostationary communication satellites. It has an array of helical antennas for L-band inside a small radome. I've been seeing a lot of Inmarsat equipment available lately for cheap / free. It seems to be going obsolete as Starlink and other modern providers take over the satellite communications market.
People sometimes confuse me with @peterfairlie2296, check out his channel for more satellite phone stuff!
Big thanks to an anonymous donor for sending me the Inmarsat terminal (you know who you are :-) )
Also huge thanks to my Patreon supporters & Youtube members for helping me make sound financial decisions like this. A SIM card for less than an hour of talk time and 5.5MB on a 15-year-old satellite phone was not cheap! Fortunately the service is still available, I'm not sure if cell phones from 15 years ago would even work today!
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My previous video on the St. Paul store can be found here: youtu.be/U-uJPIhAUu4?si=diIZCJVUVDa0YypP
And Ax-Man's website with store locations and hours can be found here: ax-man.com
St. Paul
1639 University Ave.
Fridley
1021 E. Moore Lake Dr.
St. Louis Park
8134 Minnetonka Blvd.
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I also did a few other Meshtastic experiments in this video, it's essentially a follow-up to my first video on the subject (youtube.com/watch?v=8WRNTkbRuCI).
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No offense intended to any truck owners out there! I just don't personally find a need for them.
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I had mixed luck decoding some of these. In particular, I couldn't reliably receive DMSP when the satellites were passing Southbound over the US. I'm not sure if this is a quirk of my antenna hardware or just how the system operates. I had the best luck on Northbound passes, but the encryption only switched off above about 40 degrees North Latitude, so I could see the Great Lakes and points North.
I'm using a modified C-band TV dish, a fold-up model generously provided by a fellow ham radio operator. My feed is a loop of copper wire inside an old aluminum dish, tuned for 2.2GHz. (I've since learned that this might not be ideal for circular signals, as the loop actually has linear polarization)
I also tried a helical feed designed by @dereksgc, I had mixed luck with it but didn't realize until later that I was only receiving Northbound passes. You can find info on building helical feeds here:
Some archival footage is from "The DMSP History", published by the US Government, used as public domain: youtube.com/watch?v=n3TSQx7RKtg
A lot of technical documents on the DMSP system can be found here: https://eogdata.mines.edu/products/dmsp/#docs
Orbit animations are from the @usradioguy Vlog (used with permission): youtube.com/watch?v=JvIygYeR_sI
You can find lots of useful satellite info at usradioguy.com
I used a couple devices in this video, including the HackRF One (amzn.to/3yNXWWe) and RTL-SDR v4 (amzn.to/3SWO7fC). The RTL-SDR is cheaper but has fewer features than the HackRF.
For S-Band signals I used an MMDS device to amplify and down-convert 2.2GHz. I used one like this (make sure to get the "1998" version which uses a 1998MHz Local Oscillator): aliexpress.us/item/3256802523781806.html
I also used a Bias-Tee like this one to power my MMDS: amzn.to/4dwbFQy (There are other options like this which don't require soldering: amzn.to/4fPZksb)
For recording radio signals I use SDR++ (sdrpp.org) and for decoding I use SatDump (satdump.org)
If you're interested in trying easier satellite reception, I have a video about NOAA weather satellites here: youtube.com/watch?v=icADyjm3PBE
And I have an intro to L-band satellites here: youtube.com/watch?v=w5DyJHMw7aY
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I think the xTool P2 is great for hobby and DIY work as well. It's way faster to set up and align jobs than my old lasers, and it saves a lot of time in prototyping and rapid fabrication. This makes things like signs, control panels, laser-cut parts and models, etc really easy for your own projects or for a workshop or retail operation.
This is a sponsored review, but I genuinely love how easy and fast it is to prep and layout projects on this unit! Alignment was always the slowest part of using earlier lasers, and this thing automates most of that process. The only downsides I've found are the weight (~100lbs) and noise level, but those aren't really issues for my projects. It's actually nice to have a big heavy machine that keeps its calibration and remains accurate even with the occasional bump or vibration of a garage environment.
If you'd like to check out the xTool P2, you can visit one of the links below, with coupon code "xToolPartner" for $80 off.
US: xtool.com/?ref=lxgmjrsp&utm_medium=5306&utm_source=influencer
EU: https://www.xtool.eu/?ref=lxgmjrsp&utm_medium=5307&utm_source=influencer
UK: uk.xtool.com/?ref=lxgmjrsp&utm_medium=5312&utm_source=influencer
France: fr.xtool.com/?ref=lxgmjrsp&utm_medium=6589&utm_source=influencer
Germany: de.xtool.com/?ref=lxgmjrsp&utm_medium=6578&utm_source=influencer
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This might show up in a future video as an antenna rotor or something, I haven't quite figured out what to do with it yet.
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This was mainly designed for small-time, non-technical users to live-stream sports, concerts, education, government proceedings, etc. The system has a video capture card and a simple touch interface. Unfortunately it's from 2012, so it encodes into extinct formats like Flash, and only in very low quality.
I still don't really know what to do with the thing, other than tear it down for spare parts. Throw your suggestions in the comments!
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I wanted my own thermal drone for closer to a $500 budget. Thanks to HikMicro's thermal camera products, a little duct tape, some zip ties, and a used drone from @gardenfork, I finally have one!
You can find the Hikmicro Mini2 camera for Android here:
amazon.com/dp/B0CP8SG388?maas=maas_adg_346BAD1320412866963B531E094783F1_afap_abs&ref_=aa_maas&tag=maas
And you can find the Pocket Wifi camera here:
amazon.com/dp/B09XWXS3P3?maas=maas_adg_65E5CA40B59865887892725A5BB8D789_afap_abs&ref_=aa_maas&tag=maas
I'm still working on the legal paperwork for this contraption, because it's definitely too heavy to fly without registration and licensing. Until then, here are some test runs indoors in my surplus geodesic space radome!
More information about the Sandland radome can be found here:
youtube.com/watch?v=abR1BJ4_ea8
Sandland tunnels: youtube.com/watch?v=O0gG5eJcVaw
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Thanks to Nooelec for the HackRF One! You can find it here: amzn.to/3SyBg2V
You can find the Nooelec LaNA here: amzn.to/3WHxCWZ
And the SAWbird GOES here: amzn.to/3WLMaoI
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We got permission to check out the caves, including some of the normally off-limits areas. While the majority of the tunnels are open to the public, there are some hidden and less developed spots, as well as a few mysterious sealed passages. Some of these are rumored to date from Prohibition, and may have been used for bootlegging and other nefarious deeds!
Check out Strains of the Earth at strainsoftheearth.com, including more information about the caves at strainsoftheearth.com/jordan-historic-caves
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If you'd like to check out the xTool P2, you can visit one of the links below, with coupon code "xToolPartner" for $80 off.
US: xtool.com/?ref=lxgmjrsp&utm_medium=5306&utm_source=influencer
EU: https://www.xtool.eu/?ref=lxgmjrsp&utm_medium=5307&utm_source=influencer
UK: uk.xtool.com/?ref=lxgmjrsp&utm_medium=5312&utm_source=influencer
France: fr.xtool.com/?ref=lxgmjrsp&utm_medium=6589&utm_source=influencer
Germany: de.xtool.com/?ref=lxgmjrsp&utm_medium=6578&utm_source=influencer
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Original Tuggy build video: youtube.com/watch?v=gKPx86pFYvI
DNR smackdown video: youtube.com/watch?v=SO-Cf_5Q2aY
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I recently got ahold of one at an estate auction, and it's in great shape! I did have to replace the vintage power supply capacitors, since those almost always fail on these old computers. I also replaced a faulty floppy drive with a Gotek disk emulator, and made some other small adjustments.
And no, as far as I know, it can't play Doom :-( In fact it does almost nothing modern at all, and is kind of a giant pain to make compatible with anything modern! I did manage to get a few programs onto it, and we might re-visit this in the future. For now it's mostly a fun novelty and a neat way to look at vintage tech.
Some of the resources I used when working on this computer include:
GoTek Floppy Emulator: ebay.com/itm/234259341532?var=533862749973
3-D printed adapter for the GoTek: thingiverse.com/thing:2217061
Kermit disk image (bottom of the page): https://blog.nroach44.id.au/snippet-osborneone-kermit.html
Richard Loxley's blog about Osborne file transfers: richardloxley.com/2018/04/27/osborne-restoration-part-16-transferring-cpm-software
I'd also like to thank Iso-Tip for sending me their cordless soldering iron. It made the capacitor replacement super easy! You can find them at iso-tip.com (Use code SMART24 for 15% off!)
You can also see my retro-inspired luggable cyberdeck build here: youtube.com/watch?v=bSJSktT07bo
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It unfortunately came with the wrong proprietary interface connector, so I can't see if it powers up (I was too lazy to hack into the wires directly). Instead, I tore it down until I have the parts I want, and the parts I'll hoard for later!
This is what the Saveitforparts channel is all about! Even though I don't have an immediate use for any of the components for this, I'm going to keep them for future projects. I'm trying to save as much as I can from going into a landfill.
Stay tuned for possible future uses of the parts in this, especially the pan/tilt mechanism!
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This is NOT a sponsored review, as I paid for this thing (again, used, and cheap!). However, I do really like it so far! It's not 100% like writing on paper, but it's pretty close. It's much nicer for note taking than a regular tablet or older e-reader.
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This video is a fun behind-the-scenes look at some of FreeGeek's operations, and interviews with several staff members about their departments. It's also a fun look at some of the strange retro computers and technology they encounter!
Big thanks to the FreeGeek Twin Cities staff for inviting me to visit and film their operation! You can find them online at freegeektwincities.org or in person at 2537 25th Ave S
Minneapolis, MN 55406 (Open afternoons Wed-Sun).
Also shout out to @RetroTechToys who's also FreeGeek's technology trainer!
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