Songle 5 VDC Household Appliance 5 Pin PCB Relay SRD-05VDC-SL-C 1 Piece

100 x 2N2222 NPN TO-92 Plastic-Encapsulate Power Transistors 75V 600mA

ELEGOO for Arduino Nano V3.0, Nano Board CH340/ATmega328P Without USB Cable, Compatible with Arduino Nano V3.0 (Nano x 3 Without Cable)

Elegoo EL-CB-001 UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable for Arduino

30 Pcs Double Sided PCB Board Prototype Kit for DIY, 4 Sizes by Paxcoo

20PCS 2.54mm Breakaway PCB Board 40Pin Male and Female Header Connector for Arduino Shield

E-Projects EPC-103 16 Value Resistor Kit, 10 Ohm - 1M Ohm (Pack of 400)

Texas Instruments NE555P IC Single Precision Timer (Pack of 12)

Aven 17010 Adjustable Circuit Board Holder

eBoot 6 Pack LM2596 DC to DC Buck Converter 3.0-40V to 1.5-35V Power Supply Step Down Module

WINGONEER 5PCS KY-019 5V One Channel Relay Module Board Shield for PIC AVR DSP ARM for arduino Relay