When I bought this I was very sceptical that anything powered from a USB port could actually produce enough heat to solder. But here it is, tested and reverse engineered for your viewing pleasure.
Note the warning about using it from plug-in USB chargers. Most ungrounded versions have significant capacitively coupled mains leakage on the output that will be present on the irons tip and could damage some overly sensitive components. In delicate situations it's best to power the unit from a decent chunky USB power bank.
If you want to buy one of these you can either search for the keywords "8W USB soldering" or use this ebay search link set for lowest cost and shipping first.
If you enjoy my videos you can help support the channel with a dollar for coffee, cookies and low cost Chinese soldering equipment at
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