When 3.3v isn't actually 3.3v: USB to Serial adapters

I picked up a couple of USB to serial adapters recently, both of which claimed to switch 5v to 3.3v. It turns out that everything is not a cut and dry as it seems. Here are the ones I would recommend - 2PCS CH340G RS232 Upgrade to USB TTL Auto Converter Adapter STC Brush Module - ebay.eu/2fMPrO2 Here is the other one - ebay.eu/2g87fUJ It turns out that 'Likes' and 'Shares' actually help the channel so, if you want to, please click the thumbs up or share the video. I don't have a Patreon or a donate thingy, I get by fine. That said, if you are mega rich and fancy donating something I would find useful then feel free to check out my Amazon wishlist (No pressure) - www.amazon.co.uk/registry/wishlist/29JZFQUC2NZ8V If you want to get in contact Twitter is probably the best way @mrdavidjwatts www.davidjwatts.com/

• #science_technology
• #electronics
• #usb_ttl
• #3v3
• #33v
• #5v
• #usb_serial