{ "items": [ { "designator": "C1", "value": "100µF", "description": "Electrolytic capacitor; 100µF; voltage 10V" }, { "designator": "R1", "value": "33kΩ", "description": "Resistor" }, { "designator": "R2", "value": "470kΩ", "description": "Resistor" }, { "designator": "LED1", "value": "LED-10W-F", "description": "10mm LED frosted white" }, { "designator": "TR1", "value": "BC547", "description": "NPN-Transistor" }, { "designator": "U1", "value": "NE555", "description": "555 Timer" }, { "designator": "VCC1", "value": "9V", "description": "9V battery, PP3 or similar" } ] }