This unit is very powerful, but also potentially a shock, fire and RF jamming risk.
https://www.youtube.com/watch?v=_VSmWxC14JY
It is probably best used in a grounded metal case with a fan to stir the air and cool it. But it is really just suited to fairly extreme ozone applications.
2020-11-17 05:59:07 +0000 UTC View Post
A deliberately simple video, mainly because I've been losing a lot of sleep recently. Largely due to my brother Ralfy not understanding my nocturnal lifestyle. (A lot of technical people seem to work at night.)
A worthy charger though. It uses the very common charge circuitry found in many rechargeable products.
2020-11-16 05:27:35 +0000 UTC View Post
Yes - another shameless clickbait thumbnail. Because they do actually have the desired effect.
I'm not doing a huge number of these carbonation videos, as the novelty will probably wear off quite quickly. But let me know if you like them.
https://www.youtube.com/watch?v=WRwrcL1bUdY
Buckfast is notable for causing a lot of street violence in Glasgow by combining alcohol intoxicatio...
2020-11-13 11:57:18 +0000 UTC View Post
OOPS! It turns out that if you add an unlisted video to a playlist it becomes visible immediately in that list. I've taken it back out for the proper Patreon advance preview.
https://www.youtube.com/watch?v=YYm4PbHvN4s
2020-11-13 11:43:29 +0000 UTC View Post
Another failed breaker from an electric vehicle charger.
https://www.youtube.com/watch?v=4HQ7XOVNabg
Let me know if you think that my theory of pulsing electronic loads causing contact failure is plausible.
2020-11-12 19:09:46 +0000 UTC View Post
Here's the link to Saturday's stream. (If YouTube is stable again by then.)
I'll try uploading today's video later, as it was struggling to upload earlier.
Remember that to interact with the chat you have to view the livestream on YouTube.
2020-11-12 07:33:11 +0000 UTC View Post
The unique feature of this one is that it has a green LED power indicator. That might sound a bit of an anticlimax, but back when this unit was made about 40 years ago, a common 5mm green LED was actually something special. It was used to convey an element of sophistication in the same way blue LEDs are routinely abused now.
The ioniser was sold to help pacify people who wore synthetic fabric clothes, sat on sweaty plastic seats on nylon carpet while using hot flickery video...
2020-11-11 01:59:06 +0000 UTC View Post
This may seem like a simple and still popular game, but it has an absolutely epic history as one of the very first computerised games.
https://www.youtube.com/watch?v=3ss-1cu5gtA
The original Simon colour and sound sequence game was very distinctive in an era of simple electromechanical games with motors and gearboxes. The first units used a TMS1000 microcontroller, which was the first commer...
2020-11-10 07:05:10 +0000 UTC View Post
I'll be joining the guys at HVAC overtime in a livestream to discuss the range of exotic, but debatable additions available for home air conditioning systems.
https://www.youtube.com/watch?v=E3DqDEcKbcE
2020-11-06 01:56:16 +0000 UTC View Post
Here's the CDI (Capacitive Discharge Ignition) module from the quad/scooter loom.
Its purpose is to charge a capacitor from the high voltage winding on the alternator/magneto, and then dump that charge through the primary of the ignition/spark coil to create a high voltage spark at the tip of the spark plug when the engine flywheel triggers a sensor.
2020-11-06 01:53:10 +0000 UTC View Post
This is the rectifier and regulator from the cheap Chinese quad wiring-loom.
And I use the terms rectifier and regulator loosely....
2020-11-05 16:48:55 +0000 UTC View Post
For those who can't make the 5th November Patreon stream, the Saturday night stream will be happening as normal.
As always, to participate in the chat you will need to view the video on YouTube.
2020-11-04 07:18:39 +0000 UTC View Post
One of our more relaxed livestreams. It's on Thursday at 9:05pm British time, but you can see your local time on the video page itself.
Have your technical questions at the ready.
Remember that to participate in the chat you will need to view the video on YouTube.
2020-11-04 07:06:39 +0000 UTC View Post
Those of you who watch the livestreams will have seen the red wine being carbonated before.
This video is part of the trashy click-bait Sodastream series.
2020-11-04 04:15:19 +0000 UTC View Post
How low can they go? How about potting the PCB in sand with a thin layer of resin on top.
2020-11-04 04:12:15 +0000 UTC View Post
I have to admit that I really enjoyed exploring this wiring system. It taught me a lot about the electrical system used in things like quads and scooters.
I'm not finished though. I'm going to try and de-pot some of the resin encapsulated components.
2020-11-02 07:41:06 +0000 UTC View PostTomorrow's live stream will be at a different time from normal due to the clock change here. Double check the start time shown on the video.
https://www.youtube.com/watch?v=_syVxV8nYm4
2020-10-31 02:31:56 +0000 UTC View Post
Thanks to Flemming's suggestion of using the hull command, I've now made the openscad olive lamp generator much more versatile. It can create the lamps shown above by defining a base sphere size, a tip sphere size and the total height of the globe.
I've also added the facility to customise the base length, diameter and inner LED hole size.
Note that the hull command in the script results in MUCH longer processing times. Especially with the high numbers of facets in smooth...
2020-10-30 05:00:02 +0000 UTC View Post
This is one of those random things I found on eBay. It's the wiring loom for a quad bike.
The loom includes a keyswitch, handlebar mount control, magneto with high and low voltage windings and timing detector, Capacitive discharge ignition module, spark coil, spark plug, rectifier/regulator, starter relay and battery terminals.
It was interesting to explore and trace out all the wires and their functions.
The rectifier/regulator and CDI (Capacitive Discharge Ignition) ...
2020-10-30 03:38:24 +0000 UTC View Post
Remember the automatic foaming soap dispenser? I was so intrigued by the dedicated foam pump that I looked on eBay to see if I could find them as a bare component.
eBay came up trumps with a single seller. They seem to mainly sell industrial components like motors, air pumps, timer modules and power supplies.
There's a link to the sellers listing in the YouTube video...
2020-10-29 05:29:23 +0000 UTC View PostHere are some files to play with:-
The lights are all hollow designs and should be printed without support to avoid filling the inside with light blocking plastic. A raft is recommended if your software offers that. These have all been tested on a Cetus 2 with clear and white PLA.
Don't use vase mode. The models are hollow already.
cabochon.scad will let you create custom shaped cabochon lights. The base is a standard size designed for adding a bit of...
2020-10-28 07:21:21 +0000 UTC View Post
Here's the link to Saturday's livestream:-
To participate in the live chat you'll have to view it directly on YouTube.
2020-10-28 06:35:38 +0000 UTC View Post
This 20 year old flashlight is probably one of the first LED torches ever manufactured.
It was launched just after Nichia had started manufacturing the first white LEDs, and cost an absolute fortune at the time.
By modern standards it's a bit tame. But back then it was EPIC, since the previous torches had all been tungsten lamp based.
2020-10-28 00:58:06 +0000 UTC View Post
The novelty hasn't worn off yet. I was hoping to make the traditional olive shaped lamps customisable, but the algorithm is super-complex where the sides touch the round sections. I think I may actually have found my first real use for geometry equations. I just made these ones a fixed size by making adjustments visually.
The standard white PLA filament is surprisingly good in this application. It really looks like retro lamps. Another nice thing about the ...
2020-10-26 05:20:32 +0000 UTC View Post
I'm not sure I'd actually use this outdoors as implied by the listing. It's a wall light that projects a wash of light upwards and downwards, that can be shaped by built-in barn doors. (As used for beam shaping in television and film.)
https://www.youtube.com/watch?v=cndh8bhCi-k
The design is interesting, but the use of specialist COBs and the way they are mounted, makes this yet anothe...
2020-10-26 03:26:26 +0000 UTC View Post
Remember I put up a video about a fake product that claimed to convert your phone's LED flash to a UVC germicidal light?
https://www.youtube.com/watch?v=CQFKHjgy3Ok
It was demonetized from the beginning, and has now been age restricted.
2020-10-24 17:38:10 +0000 UTC View PostIf you've got questions for the Saturday streams then leave them below. It helps to fill awkward gaps and restart the conversation when it gets stuck in weird subjects.
I still have some here on a list from last time.
2020-10-24 06:32:49 +0000 UTC View Post
It's ages since I've stripped apart and modified something from Poundland.
https://www.youtube.com/watch?v=1TR1tom8N-E
This is probably the fastest and cheapest way to get COB LED arrays.
2020-10-23 21:30:07 +0000 UTC View Post
This one's pretty neat, but much coarser and messier than the previous mains voltage heated unit though.
https://www.youtube.com/watch?v=16SQ8h1RWOc
The pump's quite smart looking inside.
2020-10-22 02:17:58 +0000 UTC View Post
Here's the link to this upcoming Saturday's livestream:-
To interact with the chat you'll need to view it on YouTube.
As you can see from the thumbnail, I'm still having a 3D design moment. It's OK. I'll soon get over it and normality will resume.
2020-10-21 02:49:16 +0000 UTC View Post