Maker Ilia Baranov aka “Mr. Robot” designed these business cards that are actual PCBs, printed by DirtyPCBs, so you can practice surface-mount soldering common package types (QFP, SOT223, SODs, etc. – there’s room for one through-hole resistor as well), along with reference guides for trace widths, American Wire Gauge standards, and more. Brilliant!
Read Ilia’s story here; via the Circuit Maker blog.
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