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20x4 LCD Modules 2004 LCD Module with LED Blue/Yellow green Backlight White Character (with I2C) -
3×18650 Battery Holder Box with Wire Leads — Standard Plastic Case (11.1V Output, Black) -
4×4 Matrix Keypad Membrane Switch — 16-Button Waterproof Keyboard for Arduino & DIY Electronics -
4×AA Battery Holder Box with Wire Leads — Standard Plastic Case (1.5 V × 4 = 6 V Output, Black) -
AT-09 Bluetooth 4.0 BLE Module (HM-10 Compatible) — CC2540/CC2541 Serial Wireless for Arduino & IoT -
FT232RL FTDI USB 3.3V 5.5V to TTL Serial Adapter Module for Arduino FT232 Pro Mini USB TO TTL 232 -
HQ3268 Precision Quartz Clock Movement Kit — DIY Repair Set with Red Hands (Silent Sweep) -
Micro Servo Motor Metal Gear, MG90 Servo, Metal Gear Servo Motor, Servo For RC Robot/Ship/Toy -
SIM800L Mini GSM GPRS Module — Quad-Band Wireless Communication Board with Antenna (3.7–4.2V, Micro SIM) -
SIM900A Mini V4.0 GSM GPRS Module — Wireless Data Transmission Board with Antenna -
TP4056 Li-ion Battery Charger & DC-DC Boost Module — 3.7V to 5V Step-Up Power Supply for 18650 Cells (DIY Kit) -
Ultrasonic sensor HC-SR04 for Arduino