Introduction: Dark Activated Circuit
hi everyone.
my name is bar toplian and i'll show you how to make a dark activated circuit
Step 1: Step One - List of Materials
(x1) usb connector
(some) jumper wires
(x1) 104 variable resistor
(x1) LED
(x1) general purpose small signal npn bipolar transistor (2n2222a)
(x1) 220 ohms resistor
(x1) 2200 ohms resistor
(x1) LDR (light dependent resistor
Step 2: Step 2 - Solder Jumpers to the Usb Connector
solder one jumper(purple) to the negative terminal of the USB
solder the other jumper(grey) to the positive terminal of the USB
Step 3: Step 3 - Connect Everything to a Breadboard or Prefboard
use the following schematics to wire the circuit