KJ6EAD Electronic Stuff

My electronic hobby and contest projects.
Admin: kj6ead

Basic Bi-level Bicycle Brake Light for Forum Post

Basic Bi-level Bicycle Brake Light for Forum Post

The power switch, brake switch and battery holder are parts of an existing blinker. The 4 LEDs and 5 resistors will be on a retrofitted PCB.

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Shopping Cart for Forum Post

Shopping Cart for Forum Post
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Blue/Red LED Selector for Forum Post

Blue/Red LED Selector for Forum Post
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Linear Constant Current Regulator for Forum Post

Linear Constant Current Regulator for Forum Post
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Testing LED Vf for Forum Post

Testing LED Vf for Forum Post

Using an LM317L-based constant current regulator to test Vf of unknown LEDs.

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PCB Modification for Forum Post

PCB Modification for Forum Post
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9V Split Supply for Forum Post

9V Split Supply for Forum Post
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Treasure Box Alarm for Forum Post

Treasure Box Alarm for Forum Post
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Yogurt for Forum Post

Yogurt for Forum Post
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EL Switch Wiring for Forum Post

EL Switch Wiring for Forum Post
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