AliExpress unbag joy - Glow sticks, gas detector, fake sticky poo

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 out or disappear.

When paying on AliExpress, let the transaction complete before leaving the purchase page as otherwise the purchase may not go through.

The lamp holder fan (which operates internally at 9.7V):-
https://s.click.aliexpress.com/e/_c40awP8B

Snap to activate glow sticks for fishing and other uses. They're still glowing after 24 hours!:-
https://s.click.aliexpress.com/e/_c3liyQTD

The very useful adjustable PWM motor/LED speed/intensity controllers:-
https://s.click.aliexpress.com/e/_c4ey0mM3

The pack of microswitches:-
https://s.click.aliexpress.com/e/_c4nYcZWL

The unusual silicone mould for making custom resin clothing buttons:-
https://s.click.aliexpress.com/e/_c3FkkmQr

All the little stepper motor driver modules and the basic interface PCB:-
https://s.click.aliexpress.com/e/_c2zHWDkr

Arduino shield for stepper motor driver modules:-
https://s.click.aliexpress.com/e/_c3981GQr
Apparently some of these have a design error where the step resolution programming links are to the zero volt rail instead of the 5V one. Here's a link to a fix for that:-
https://www.youtube.com/watch?v=OMxoKqRyQyE

The simple clock pulse, direction and enable controller for stepper drivers:-
https://s.click.aliexpress.com/e/_c3XvIKvl
This does NOT use a 555 as I thought. The unmarked chip may be a microcontroller.

MQ gas sensor module with digital and analogue output for easy control:-
https://s.click.aliexpress.com/e/_c3kv3ykj

Fake sticky poop that stains things:-
https://www.aliexpress.com/item/1005008812011947.html

Triggerable MP3 audio warning device:-
https://s.click.aliexpress.com/e/_c4lgviqn

The video with scripts for making the LED neon shapes like the triangle I showed in this video:-
https://youtu.be/y9bSzE9ir1Q




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