EEVblog 1516 - Mailbag Bonanza!

[EEVblog]

Mailbag Bonanza!



00:00 - Mailbag Bonanza!
02:24 - Australian Signals Directorate 75th Aniversary 50 Cent Coin
05:07 - One-Shot Relay!
07:20 - Olight Torch Bonanza!
https://www.olightstore.com.au/s/P7TWZN
08:20 - Olight Marauder 2 14,000 lumen torch
18:29 - Olight RN1500 Bike Light
23:02 - Olight Perun 2 Headlamp
29:54 - Dreo Macro Max S HEPA Air Purifier
https://www.dreo.com/products/dreo-macro-max-s-air-purifier
38:34 - Does it produce any dangerous Ozone?
41:19 - Let's check out the FCC report and teardown photos
46:01 - Hoymiles solar microinverters!
https://www.hoymiles.com/au/products/microinverter/
51:06 - Is it potted?
55:31 - Noyafa NF8601S Ethernet cable tracer
https://www.noyafa.com/products/tdr-cable-length-tester-nf-8601-s.html

[Gibol]

If you decide not to use the microinverters I'll be happy to take over, heck I can even prepare a detailed report how they perform afterwards

[SiliconWizard]

Cool to see your uSupply. Any plan to release it one day or have you decided not to for good?

[Barny]

Dave said in his podcast that there is no plant to work on / finish the uSupply.
It's sad.

To solve this problem, i took one of this cheap Power supply modules which are available at E-Bay, Amazon, Aliexpress,... put them in a box and connect it to my model plane 24V battery.

There are USB-C modules available which are handling the USB communication to get full voltage output from USB-C power banks / charging adapter.
Perhaps this would be an solution for you?

But be carefull.
There are multiple USB-C power standards.
Not every charger / power bank understands every standard and refuses to deliver full voltage.

[eti]

# Skip to 5 mins if coins ain’t your thing.
# Dave, what’s going on with your audio quality recently? It sounds SO low quality, compressed and has that ghastly audio “shimmer” effect; is it YouTube compressing it? I’m no audio snob, but this sounds almost as if you’re lispiing!
# Re the “Marauder” torch (what a silly name, replete with all the hard edged “macho” styling) - I don’t quite think a professional search and rescue team would be buying cheap Chinese consumer grade tat like that!

[CyberChris]

The Hoymiles HM-xxxx series uses a proprietary 2.4RF protocol based on the Nordic NRF24L01+ chip.
Some hackers on the German microcontoller.net forum have reverse engineered the 2.4GHz protocol and there are two open source projects for the ESP8266/ESP32 that can read the HM-xxx's data

https://github.com/tbnobody/OpenDTU

https://github.com/lumapu/ahoy

I tried to post this information three times in the video comments. But youtube always deleted it.

regards,
 Chris

[grythumn]

https://github.com/lumapu/ahoy

I tried to post this information three times in the video comments. But youtube always deleted it.

It's the links, in my experience. The spam filters are pretty aggressive to keep the bots in check. Some creators check the filters and approve posts, but it's a lot of work for big channels.

-R C

[Tantalum]

Actually the Blueair does produce ozone, how could it not, it has ionizers on the side/bottom air intakes.

https://smartairfilters.com/en/blog/how-blueair-purifiers-create-dangerous-ozone/

Unfortunately, yes, they produce quite a lot of ozone based on our measurements. Blueair emphasizes that its purifiers are CARB-certified to produce ozone less than 50 ppb, exactly the ‘safe’ level. However, when the purifier runs on ‘high’, the ozone level rocketed up and we measured up to 0.181 ppm or 181 ppb very close to the ionizer. It’s also worth noting that the number dropped off rapidly after moving 5-10 cm away from the ionizer.

(I don't know how reliable those measurements are)

But anyway, I have a Blueair 500 also, and I'm satisfied with it too.