5x Darlington TO-220 TIP120 Transistor, NPN 60V 5A. Arduino, Raspberry Pi | eBay
resistors - Using 25 IR LEDs with Raspberry Pi and Transistor - Electrical Engineering Stack Exchange
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rpi.gpio - I would like to switch on the Raspberry GPIO using an NPN transistor (2n2222) - Raspberry Pi Stack Exchange
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RPi GPIO Interface Circuits - eLinux.org
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HOWTO – Switching on/off a DC motor with a Raspberry Pi – www.DavidHunt.ie
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50pcs 2N3904 NPN Transistors TO-92 Arduino Raspberry Pi BJT Signaling | eBay
