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![Three Fives Discrete 555 Timer Kit [v2.0] : ID 1526 : $39.95 : Adafruit Industries, Unique & fun DIY electronics and kits](https://cdn-shop.adafruit.com/970x728/1526-00.jpg "Three Fives Discrete 555 Timer Kit [v2.0] : ID 1526 : $39.95 : Adafruit Industries, Unique & fun DIY electronics and kits")