$5 USB powered soldering iron review – ZD-20U from Aliexpress

A short but in-depth review of one of the cheapest soldering irons on the market.
With only 8W of power (at 5V from the USB port) this iron works surprisingly well, though there is no temperature control and the low price caused many design compromises.
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$5 USB powered soldering iron review – ZD-20U from Aliexpress

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