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Travis Howse
Приєднався 7 лип 2006
I'm an engineer with a lot of different interests. I publish videos on projects I'm currently working on.
ASG Dev Log 0.0.15
Another Space Game (working title) dev log 0.0.15
github.com/paulloz/godot-ink
github.com/paulloz/godot-ink
Переглядів: 21
Відео
Sailing on Wivenhoe Dam, Queensland, Australia
Переглядів 103Місяць тому
Sorry about the audio quality. My phone was in a waterproof bag thing, and it was windy. Maybe turn it down, or just enjoy the visuals. The dam was very pretty. wiki.tjhowse.com/doku.php?id=projects:sailing:blog:9_wivenhoe
ASG 0.0.11 combat tuning clip
Переглядів 52 місяці тому
Testing the targeting logic for the first enemy in the game. It will need some tuning.
ASG Dev Log 0.0.4
Переглядів 315 місяців тому
Another Space Game (working title) dev log 0.0.4 I also fixed the missile momentum inheritance problem from 0.0.3, but I forgot to mention that.
Hinged mast step installed onto Caper Cat
Переглядів 745 місяців тому
Hinged mast step installed onto Caper Cat
A sailing picnic on a riverside beach
Переглядів 595 місяців тому
A sailing picnic on a riverside beach
Finding and fixing leaks in the hull
Переглядів 1695 місяців тому
Finding and fixing leaks in the hull
New enclosure and sensors for sand drawing robot.
Переглядів 6808 місяців тому
New enclosure and sensors for sand drawing robot.
Measuring robot arm position with magnets
Переглядів 7108 місяців тому
Measuring robot arm position with magnets
Sand drawing robot belt tension design chat
Переглядів 3348 місяців тому
Sand drawing robot belt tension design chat
Improved wooden mechanism for the sand drawing robot
Переглядів 2,3 тис.8 місяців тому
Improved wooden mechanism for the sand drawing robot
Sand drawing robot - Potential alternative mechanism
Переглядів 2569 місяців тому
Sand drawing robot - Potential alternative mechanism
Zigbee glass sliding door shut-and-locked state detection
Переглядів 849 місяців тому
Zigbee glass sliding door shut-and-locked state detection
How should I store flat stock for my laser cutter?
Переглядів 16210 місяців тому
How should I store flat stock for my laser cutter?
Hulk is mad, you said his name and he gets no pay 😆🤣
You might need a stronger vacuum.
Do you use any bait or just oil?
Just oil. The bees will chase the beetles into whatever crevices are available. These traps provide crevices that are lethal to beetles, but too small for bees to fit into.
@@tjhowse Thanks.
I love this concept as a time capsule technique. Everything can be digitised and converted to a data stream ... I'd love one of these to be blinking out a local copy of Wikipedia as a way to restart humanity post when the bombs drop. By being sealed there are no electrical contacts to degrade and light is the medium of information exchange. It would be good if there was some way to increase the baud rate if one had an automated morse code decryption device. Also is there a better encoding scheme than morse that would also be human readable if necessary? I'm going to include such a device in my next post Apocalypse RPG adventure.
Thanks for the kind words! Funny you should mention an RPG, I originally got this idea from Numenera, a tabletop RPG: ua-cam.com/video/by-dgIaPj68/v-deo.html
The way your son said cheeky bee reminded me of the way Duck says “pesky bee” in DHMIS (DO NOT WATCH IT WITH HIM THO PLZ, it’s made for adults only it’ll probably scare him at that age.
هذه الطريقه مزعجه لنحل ياصديقي فطريقه البدائيه افضل واهدا حضن موفقن
Yeah mate 🍻
looking so good :)
Very interesting experiment & I commend ur efforts. As an old fridgee this had me intrigued & I have wondered how they made these freeze dried fruits. Dried mango & pineapple is the best ever. IDK if u can 3D print a rack to raise the sample up higher in the chamber maybe even telescopic legs for height adjustment & incorporate a thin heating element into it so you can use ur lab PSU to control its heat range while dehydrating ur fruit pieces & have that heat almost in contact with ur product, that way you probably would not need so much heat to do the same job. Definitely weigh ur products before & after, and ideally the cold vessel liquid as well to get an idea of how it is all coming out. Have you tried to see if any flavour was in the cold vessel ice/liquid after the process? I guess moving forward you could gut a small 12v fridge system & wrap an evaporator around ur cold vessel & recycle the heat back through ur vacuum drying vessel, but this might require a bypass valve line for a bit of extra temp control, but would forego ur need for dry ice. Nice setup. Cheers
Thanks for the ideas! I do want to set this system up again sometime and try a few more things. Check out this newer video in the series for a heating rack I built: ua-cam.com/video/RvJgVv9kXG4/v-deo.html
very good work !!!!!!
Do you really need the pulleys? I'm building a SCARA robot also with the first arm driven directly off the stepper. With micro steps it seems fine enough. The second arm too is driven directly from another stepper on the first arm, no pulley. It is a much smaller and lighter stepper.
I'm not sure if I understand. Do you have a diagram or video of your setup? The belts aren't there for reduction - they're there to pass the torque through to the moving parts without slip rings.
@@tjhowse I have the arms mounted directly to the output shaft of the stepper. i.e. the arms have a hole that the splined shaft of the stepper fits into. So when the stepper rotates its shaft, the arm rotates. I don't have a video on it or anything, i have not seen anyone do it this way, they all have gears or belts from the stepper to the arms. I can email you a pic of my setup if that helps. Is your email on the youtube channel?
@@murraymadness4674 So you have one stepper mounted to the base, with an arm attached to that stepper. The second stepper is mounted to the first arm, and the second arm is mounted to the second stepper? How do you get power to the second stepper? I'm not sure I'm understanding properly.
@@tjhowse In my case I just run the second arm servo wires along the first arm. you must need continuous rotation? So then you can use the slip rings for the second servo, or power it with a battery and send the positioning to it wireless, say using a esp8266. The sand drawing is cool having the ball move 'by itself'. But then it limits the picture to have a continuous line, and thought can you make the ball levitate using a negative force field to position it to another spot without writing in the sand? That would be even more fascinating, make it jump from one spot to another. And will the ball be covered with something that looks like a bug?
Transmitting stepper control lines through a slip ring is theoretically possible, but it's a noisy, relatively high-power, signal that is intolerant of momentary interruptions. Far more challenging and expensive than using belt driven pulleys. The same applies for the battery+wireless approach. These are all solvable problems, but belts are cheap and work great. On the other hand; magnetically levitating a non a non-spinning object at room temperature is currently impossible.
my initial response of - why not just use a pencil- is overwritten by my admiration of your ingenuity.
Of course you know heating honey will destroy any good qualities of the honey i believe over 110 degree..friction of the drill and the risk of contamination
Try gravity
Uuuh I love how you lasered the small gear out of the big one, so efficient!
Hey travis would love to join for a sail sometime in my little 11 footer catamaran just starting out on wivenhoe dam and wanna do more of this sometime haha
I ended up getting my own caper cat too haha
That's awesome! We haven't taken ours out in a while due to weather and holidays. Gotta get back out there soon.
Any updates?
Sick!
Thats so cool!! Thanks for posting this ! Your brilliant!
Great video sir. I have a vacuum pump and I went to use it and usually it works fine to change the oil before every use. I wasn’t changing the oil after every use but I did change it before but anyways when I cut it on it just hums? Would you have any suggestions? Thank you.
Mine eventually had this problem too. I attributed it to a failed starter capacitor or switch. I got a refund and bought a new one.
Or you can stick it in the freezer for like... a year?
That might actually work! The challenge would be making sure it didn't take on the flavours of other stuff in the freezer, or otherwise degrade flavour-wise by extended exposure to cold air.
@@tjhowse I had a strange idea, but here goes: Put whatever you want to freeze-dry in an airtight Mason jar with lots of desiccant packets, Freeze it for a year Profit
@@MisterBones223Silica gel works well for getting very very low levels of moisture. It isn't good at removing a large VOLUME of moisture though. If you put them in with something that's relatively dry, they'll keep it dry. However if you put them with something with a lot of water in it the silica gel will quickly become saturated and stop absorbing moisture. It might work if you kept swapping out the packets and cycling them through an oven to dry them out.
@tjhowse I'd personally use dehydrated epsom salts Epsom salts can take a large volume of water Shucks, I should experiment with it and yet you know how it goes
I know you made this video some time ago, did you solve the problem? I'm wondering, if you had another second stage to bolt into the "two stage vacuum pump assembly" could you make a functioning three stage pump?
I never did get to the bottom of the problem with this pump. A few weeks after this video the motor burned out. I got a refund and bought a slightly larger version that has worked perfectly well. It still gets hot, but doesn't cut out from overheating. I'd imagine you'd get quickly diminishing returns by adding further stages. It wouldn't pump down any faster, and the quality of the vacuum would be limited by factors other than the number of stages. Getting deeper vacuums would be done with a turbomolecular pump, since at these low pressures air molecules act more like balls ping-ponging around inside the volume rather than a gas.
do you know how to force your batteries to feed the grid? we are with Amber and so far cannot take advantage of the high FIT during criticle times because I guess our SH5K-20 isn't smart enough to use Ambers system
I wrote an interface between the SH5k-20 and MQTT: github.com/tjhowse/modbus4mqtt . I use nodered to manage the logic behind force dis/charging the battery. It's strange that amber don't support the SH5k-20, the control interface is almost the same as the SH5.0RS that they do support. If you're Brisbane-based it might be worth having a chat to Ian at powston.com.au/
Maybe show us how much was collected??
About 1.2kg per frame, on average.
Where did you find this pump?
I designed it. There's a link to the CAD in the description of the video. Batteries not included!
I thought a FLOW HIVE was meant to flow. 😏
But why?
Faster honey collection!
Cool 😮love it !!
I am looking forward to the most complete detailed assembly video. and software to create different pictures using the phone
Promo>SM
Could you please possibly put out a part list
Sorry but you need to stop and smell the roses, you should get pleasure from watching the honey flow out not frustrated .
Co to🤔
great work.
A project for the new year? Or already completed?
That particular bit is fixed, but there's always more things to improve! Right now I'm re-sealing the mast top float. Then I'll probably replace the main halyard jam cleat on the mast. It's not very grippy anymore.
I see the pendulum mechanism, but where is the clock?
Check out the later videos in this playlist: ua-cam.com/video/zAjN-2I231E/v-deo.html I never actually put a clockface on it. Most of the fun for me was getting all the mechanical stuff understood.
These are a versatile little catamaran to play with. I've owned three! My only wish is that hulls were straighter (without the banana bend). On both performance and strength, the rudders will be your focus. On performance: Rudders are not deep enough and subsequently your countering of this will be evident in excess weather helm to keep your track, resulting in excess drag and slow speeds. On Strength: The transom attachment for the rudders is inadequate. An extra layer of glass (or aluminium plate) on/inside the transom, along with bigger screws to secure your rudder pins will help protect the weakest part of the Caper cat. Alternatively, custom-fitting some kick-up rudders will fix all these issues.⛵ Also: 1. Be sure your top float is absolutely unsinkable 2. Be sure you fit the appropriate 'recovery lines' _UNDER_ the trampoline and familiarise your self with using them to right your boat after a capsize! 3. Make a furler for you jib and fit a couple of jam cleats for the jib lines. 4. Do NOT be complacent about the integrity of your trampoline.
Thanks for the tips! The flip-up rudders are a great feature of the hobies. I'd love a pair on our boat.
❤ well done mate. 👏
Cheers!
You can monitor the dryness (sort of) by monitoring the temperature and pressure (using an absolute pressure sensor capable of low pressure readings) the system will not cross the sublimation line until all available water is removed. Heating will speed that process up, but you cannot be sure all moisture is removed otherwise.
What is the material cost of this wheel?
Under AUD$1 of plastic, I would estimate. Obviously more if it were printed with thicker spokes.
Maybe have your slanted finger around 15°-30° from vertical to save room and still avoid the bending of vertical storage. And then sheets of MDF as a support. I would try with 19mm thick MDF, finger spaced every 40cm. Then to allow moisture to flow, carve some grooves in the MDF with a router, using a losange pattern. Or maybe just staple on a chicken fence mesh ? it's rather flush, but should still allow air to move through the twisted wires.
any electrical wiring diagram?
It's pretty simple inside. There's a centrifugal starter switch and capacitor and an overtemp cutoff switch.
@@tjhowse ok tkanks , I just have one that has had the case broken and some wires were disconnected, trying to figure out where the wires go
I thought Arlec was good quality until I watched your video that board don't look good
Amazing, exactly the mechanism I've been trying to find! Would you be able to share the 2d files to laser-cut?
Hey! I've just pushed up DXFs for all the lasercut parts here: github.com/tjhowse/sand_drawing/tree/master/scad/lasercut_v2_dxfs . I don't yet have any updated documentation to show how these parts go together. I hope the videos will be sufficient documentation until I can put together something better.
I would like to make one of these. Are the stl files for the 3d prints available, and do you have any instructions on how the mechanism is assembled and how to set up the software? I have checked your website and can’t find these. You have done an amazing job designing this and I would love to build one.
I do need to update the docs to reflect the new lasercut design. I'm not sure if I'm going to go back and update the 3d printed version. I'm running long-term durability tests now to make sure nothing wears out too quickly. Once I'm done with that I'll put together some updated docs and make a build video.
@@tjhowsea build video would be excellent. Thank you so much I can’t wait for it.
@@nicksantitoro Hey! I've just pushed up DXFs for all the lasercut parts here: github.com/tjhowse/sand_drawing/tree/master/scad/lasercut_v2_dxfs . I don't yet have any updated documentation to show how these parts go together. I hope the videos will be sufficient documentation until I can put together something better.
is there a way to do this without having to buy something like dry ice / ethanol every time you use it?
Kinda! Check out a later video in this series. I rig up a chiller to cool the ethanol rather than dry ice. It works much better and is far less expensive. ua-cam.com/video/7W1A2OV-K6g/v-deo.html
Hi mate can you make one for me ?
Haha, I've barely got mine working. It's pretty far from an actual product. I'll probably come back to this project when it's time to do some harvesting on our hives.
All that just for mango ;)
this things usless