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Posts tagged “blinky

USB Blinky kit

USB Blinky light in action
USB Blinky Parts

USB Blinky is possibly the simplest LED blinky kit out there. There are only ten parts to solder. The PCB (Printed Circuit Board) itself plugs right into an USB port. Thicker material is used for the PCB, so that it fits into the USB port nicely.

USB Blinky blinks at about twice a second. USB Blinky only draws little current (about 5mA) so any USB ports can power it.

USB Blinky is the perfect “Learn to Solder” project.

Kit Contents
2x 5mm Super Bright LED
2x 470 ohm (R1, R4)
2x 47k ohm (R2, R3)
2x 22uF Electrolytic Capacitor (C1, C2)
2x NPN Transistor (Q1, Q2)
1x Custom PCB

- view detailed technical info and assembly instructions @ instructables

*** Purchase Here ***

USB Blinky!

USB Blinky in action

Every now and then, I feel like designing something really simple and basic. Blinkies are my go to circuit for the simple LED joy. Just ten parts and the two LEDs blink back & forth…
However I always find powering the circuit a bit of pain – if I use battery, I’d have to change the battery all the time. But using an AC adaptor is kind of messy. Then I realize that USB ports are everywhere – on my computer, on the side of my keyboard, phone chargers, etc. Being able to just plug a blinky into any of USB ports around would be fun.

So here it is, USB Blinky. I used thicker PCB material so that the PCB will fit into USB port nicely making the simplest possible USB plug.

USB Blinky schematic

- view detailed technical info and assembly instructions @ instructables

- purchase USB Blinky

Two LED Blinky