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Another elephant-fart of technical goodies from AliExpress for us to explore. These videos are not sponsored by AliExpress. I buy all these items myself. Here are some links to the items. These are affiliate links, but that will not affect the price you pay. Keep in mind that these products may not meet your country's standards. Some listings may not work for some countries and some may just...

A lever style connector sold in the UK by CPC (part of the Element14 group). This seems to be a UK standards tested version of the very common pass-through lever terminal blocks widely sold from unregulated platforms like eBay, Temu and AliExpress. Here's the CPC catalogue listing:- https://cpc.farnell.com/tiger-power-supplies/tgr-qc-3-3-b/quick-wire-connector-3-3-c-coded/dp/CN24138 Note that...

This is not a sponsored video. Crysound offered to send me a unit to play with, and didn't even require me to make a video about it. But how could I not make a video about this intriguing device. This unit is a demonstrator unit. The final units may have different software and there is the ability to download firmware updates over WiFi. Mike of Mikeselectricstuff has sacrificed his unit for o...

I kinda like the Fakita battery system (Fake Makita) as it is a useful battery pack with built in protection against over-charge, over-discharge and overcurrent. This kit comes without cells and is supposed to make a monster 30 cell battery with five series sets of six-paralleled cells, giving the potential for a 14.4Ah pack if using 2.4Ah cells. (The Ah capacity is at the rated voltage and not al...

Another cyber-attack of technical goodies from AliExpress for us to explore. These videos are not sponsored by AliExpress. I buy all these items myself. Here are some links to the items. These are affiliate links, but that will not affect the price you pay. Keep in mind that these products may not meet your country's standards. Some listings may not work for some countries and some may just b...

A very odd little thing. I initially thought that this was based on a magnetic latching system, but it turns out that it uses a length of a special wire that contracts significantly as it heats up. It means that this unit is very simple with a minimum of mechanical parts and is not influenced by a string external magnetic field as some magnetic units are. The wire is theoretically rated for millio...

My favourite style of pen, as it produces a very solid line. The case colour usually denotes the ink colour, and since I like the purple pens I just empty them and refill them with universal inkjet printer black ink. Depending on how heavily you use the pen, you can generally refill it several times before the tip finally starts wearing down too far and produces a much thicker line. The pen brand...

Today's carbonation calls for a very different carbonator. A Drinkmate unit (not a sponsor). Unlike the Sodastream, the Drinkmate unit is suited to carbonation of many liquids. Triple fartulation - but ultra squeaky. If you enjoy my videos, supporting the channel on Patreon helps keep it independent of YouTube's quirks, avoids intrusive mid-video adverts, gives early access, bonus footag...

Imagine a toilet paper that was literally the opposite of everything that toilet paper should be. Sheets of glossy baking paper that literally just smeared excrement around instead of cleaning it off. This horrific toilet paper was very common in British schools and factories, where it was used as a cost saving measure applied to the menial workforce. ... https://www.youtube.com/watch?v=jprctRpCtk...

I got this a long time ago from a shop called T J Hughes on Argyle Street in Glasgow. They had a large display of fibre optic Xmas trees that had a very distinctive appearance compared to the simpler ones with fixed colour changing LEDs. I "explored" one in the shop and when I saw the rotating LED module I immediately bought one. I'm not sure if there was an issue with reliability,...

During the load in and run of this show (Royal Edinburgh Military Tattoo 2024) I was making shorts for the channel's Patreon supporters, to fill the gap of full bench-content while I was working. This is one of the quieter flypasts at the start of the show. The full-on fighter jets are much louder. I was out on the arena for most of these shows, doing physical lighting cues. (Moving lights as...

This is a demonstration of a classic thermal overcurrent device operating. There is a fixed contact, and one on a bimetallic strip that is sized for the rated current. When the rated current is exceeded significantly, the domed bimetallic strip heats up and suddenly clicks to the open position. A plastic shim that was being held back by the closed contacts then pops into the gap between them, so t...

Another viking pillage of technical goodies from AliExpress for us to explore. These videos are not sponsored by AliExpress. I buy all these items myself. Here are some links to the items. These are affiliate links, but that will not affect the price you pay. Keep in mind that these products may not meet your country's standards. Some listings may not work for some countries and some may just...

The design of this circuit is quite clever. It's very reminiscent of the type of projects often found in electronic magazines of the 80's and 90's. It uses the venerable NE555 chip to produce a two tone chime effect when a button is pressed. The way it gives two different tones is quite clever. Note that the standby current is a couple of milliamps, so this module is not suited to c...

Whenever I get catnip delivered, it's a race between me and all the neighbourhood cats to get to it. They won again. ... https://www.youtube.com/watch?v=vksBHSldK4g

For a cheap toy, these units are ridiculous. When powered on they establish their own WiFi network and then transmit audio and video to each other. The circuitry is based on a very capable processor with video and WiFi functionality, supported by a flash memory chip and an extra RF amplifier. The units are extraordinarily functional for such a cheap item. If you want to get some to play with then...

Another stunning demonstration of how unregulated online marketplaces have completely destroyed the safety regulations over the past decade. These connectors are sold as accessories for making up your own custom extension cables for things like electric scooters. They carry a huge risk of a connection mixup making metalwork live or causing dangerous damage to the charging circuitry of a lithium ba...

Note that this experiment was done with carbon dioxide which produces much coarser bubbles than nitrogen. The finer nitrogen bubbles would diffuse throughout the liquid better. This video is a follow up to the video about the Guinness widget that causes nucleation of nitrogen in the draught cans. Several people commented about emulating it in a clear container with a carbonator. The widget is a ho...

Technically speaking, this is an emergency lightsource that has the dry components of a simple zinc carbon cell. To activate it you add salty water, either as a mixture of salt and water, sea water or urine, and the liquid acts as the electrolyte allowing the cell to operate. The unit is not powered by water. It is powered by the gradual dissolving of the zinc block. The water is just the electrol...

Another pirates-plunder of technical goodies from AliExpress for us to explore. READ THE WARNING ABOUT THE HELL'S SMOKE BELOW! These videos are not sponsored by AliExpress. I buy all these items myself. Here are some links to the items. These are affiliate links, but that will not affect the price you pay. Keep in mind that these products may not meet your country's standards. Some listi...

If I have to be honest, this is a lot simpler than I was expecting. In the past I looked at an older style widget and it was composed of two halves that separated forcibly with a loud pop because it was still under pressure. My guess is that this widget is filled with nitrogen and when the can is sealed, the guinness may enter the sphere and pressurise the gas inside it. When the can is opened and...

This video (which is 5 minutes and 55 seconds long on the watch page) is being released at 5:55am on the 5th day of the 5th month on the 55th anniversary of the 555. There will also be a 55 minute live stream at 5:55pm UK time on the same day. The video is a demo of the extraordinary NE555 timer chip. One of the first integrated circuits that is still in widespread use 55 years after its original...

A live stream to celebrate the 55th year of the classic NE555 integrated circuit. This was one of the first commercially available ICs and is still found in many modern products. You do not need a TV licence to view any of my content on YouTube. ... https://www.youtube.com/watch?v=jzNjFJdaw_I

This is a 12/24V automatic relay tester for vehicles that cycles relays ten times while looking at their contact status and gives an indication of their functioning and reliability. Note that the unit tests the contacts with a current of 100mA and they may not perform the same under high load current. This one has an interesting quirk that I only spotted because I tested it with some relays that h...

Another sack of technical goodies from AliExpress for us to explore. These videos are not sponsored by AliExpress. I buy all these items myself. Here are some links to the items. These are affiliate links, but that will not affect the price you pay. Keep in mind that these products may not meet your country's standards. Some listings may not work for some countries and some may just be sold o...