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Forums / Electronics / problem driving relay through ULN2803 - Rickey's World of Microcontrollers & Microprocessors
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ULN2803: 8 Channel Darlington Driver (Solenoid/Unipolar Stepper) [ULN2803A] : ID 970 : $3.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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