Rechargeable Bike Light and Horn

[saneagle]

If you don't have anything better, this looks OK for £3.21. The trick with Aliexpress is to click at the same item listed separately at the bottom of the page, then click at the one at the bottom of that page until a cheaper one shows, which will be the multi-buy option with free shipping, then if you buy even more stuff, you get £2 off for 6 items. I just got that light, a double wireless remote relay switch for £2.37 and 4 x waterproof push-button handlebar switches (push button throttles for KT controllers) for £5.42, making exactly £11.00 total.

The only problem with the multi-buy thing is that you can't search for items, but it offers you stuff on the basis of what you've already bought or looked at, so you have to sort of train it by selecting stuff that's vaguely similar to what you want until you can home in on it; however, this time, I couldn't get it to show nihm batteries no matter how hard I tried, so what I have to do is keep looking at different nihm batteries every day, then they should pop up in the multi-buy next time.

 

[Cadence]

Only slightly related, but I recently bought a couple of alarms with an optional horn button from Ali.

Wireless Remote Control Vibration Alarm | Wireless Electric Scooter Alarm - Alarm - Aliexpress

Smarter Shopping, Better Living! Aliexpress.com

a.aliexpress.com

They are surprisingly good for the money. I've used an adhesive Garmin adaptor on the back so I can swap them between bikes using handlebar mounts. Equally good for outbuilding doors.
I tend to search for the cheapest I can find with "free postage over £8.00" then add any small items to the order.
I've used AliExpress for a while now and not been disappointed with anything I've bought. Yet another thing I have to thank you for saneagle!

 

[saneagle]

Only slightly related, but I recently bought a couple of alarms with an optional horn button from Ali.

Wireless Remote Control Vibration Alarm | Wireless Electric Scooter Alarm - Alarm - Aliexpress

Smarter Shopping, Better Living! Aliexpress.com

a.aliexpress.com

They are surprisingly good for the money. I've used an adhesive Garmin adaptor on the back so I can swap them between bikes using handlebar mounts. Equally good for outbuilding doors.
I tend to search for the cheapest I can find with "free postage over £8.00" then add any small items to the order.
I've used AliExpress for a while now and not been disappointed with anything I've bought. Yet another thing I have to thank you for saneagle!

I make about two orders a week. The stuff generally takes about 6 days to come. If it's much longer than that, you get a free £1 voucher for each item, which only cost a pound in the first place. It's mad! The Polish guy, who delivers the stuff, loves me because he gets about £1 for every order I make. So, you buy an item for £1. The Polish guy gets £1 and you get a £1 voucher for the next item when it's late, and you get the item. There's got to be a catch somewhere, but I'm not clever enough to figure it out.

It's harder than the double slit experiment to figure out. If you don't check which slit the photons go through, they land in a multiple stripe patten. If you check which slit they went through they only land in two stripes lined up with the slits. That's weird enough, but if you don't check which slit they went through until after they landed, they still make the two aligned stripes, which means that they knew that you were going to check them later, so changed their behaviour. It's all explained here. Let me know if you can figure it out. The title of the experiment is pretty hard to understand too "Double Slit and Delayed Choice Quantum Eraser":

 

[sjpt]

I make about two orders a week. The stuff generally takes about 6 days to come. If it's much longer than that, you get a free £1 voucher for each item, which only cost a pound in the first place. It's mad! The Polish guy, who delivers the stuff, loves me because he gets about £1 for every order I make. So, you buy an item for £1. The Polish guy gets £1 and you get a £1 voucher for the next item when it's late, and you get the item. There's got to be a catch somewhere, but I'm not clever enough to figure it out.

On a larger scale, and probably considerably dodgier, from WSJ newsletter yesterday.

The Trumps have a new crypto money maker.
The Trump family engineered a new deal for its flagship crypto venture that stands to earn over half a billion dollars. This sort of circular transaction—with the same party as buyer and seller, dealing in products they themselves created—is more common in the crypto world than in traditional finance.

To keep on thread, its a sort of financial perpetual motion.
Maybe a similar physical scheme could be used to charge the light and horn.