Power Key Chain by Boardaments.com
IT LIGHTS UP WITH USB POWER!
This is a 1.5 inch x 0.5 inch x 64 mil FR4 circuit board with Silver plated pads in the shape of a power symbol on one side. This side of the board also features a surface mount LED, current limiting surface mount resistor, and USB pads. The visible wires, or “traces,” are 8 mils wide and are coated with red while leaving the remainder of that side of board exposed. The other side is a field of visible traces that are fully masked with red.
When you plug this keychain into a USB port, the LED in the power symbol lights up!
This circuit board keychain is an ideal way to show pride in one's techie skills or those of a loved one.
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