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Arduino uno$ 15.09
Digital Thermostat$ 10.78
ESP32 ESP32-WROOM-32 Lua WIFI IOT Development Board Wireless BLE NodeMCU-32S WiFi Module BLE Ai-think$ 12.93
Relay 5Vdc Module 5v 1 channel single$ 2.16
16x2 parallel LCD Blue display$ 6.47
raspberry pi 4$ 101.29
Water Pump 12V submersible$ 10.78
Water Pump 5v submersible 3v 6V$ 6.90
Arduino nano$ 12.07
ESP-01 ESP8266 Upgraded version ESP-01S serial WIFI model Authenticity Guaranteed Internet of thing Wifi Model Board For Arduino$ 6.47

Single Phase Voltage Mutual Inductor AC Active Output Module Zmpt101b 2mAvoltage sensor for arduino$ 4.31
Compact Size 125KHz USB RFID Contactless Proximity Sensor Smart non-contact ID Card Reader$ 8.62
Copper Clad Laminate Double Side Plate CCL 20x30cm 1.4mm Bakelite Universal Board Practice PCB DIY Kit 200*300*1.4mm$ 6.47
Raspberry Pi Camera 5MP Pixels for Respberry Pi$ 6.47
MPU-6050 MPU6050 Module 3 Axis analog gyro sensors+ 3 Axis Accelerometer Module$ 6.47
PTC Positive Temperature Thermistor(16P)$ 0.86
Micro Limit Switch V-156-1C25 Long Hinge Roller Momentary SPDT Snap Action$ 0.86
dc-dc 12-24V to 5V 3A step-down converter$ 2.16

ESP32-CAM Mini Camera ESP32 CAM MB WIFI Bluetooth-compatible Development Board DIY Kit Micro Cam With OV2640 Camera Module$ 15.09
Pulse sensor Pulse Heart Rate Sensor For Arduino$ 6.47
UT120C Pocket Size Digital Multimeter$ 25.86
Dc 12V Motor Small Pcb Hand Drill Drilling Machine Compact Set With 10Pc 0.5-3Mm Drill Bit 0.3-4Mm Jto Keyless Chuck$ 17.24
Uno+WiFi R3 Atmega328p+Esp8266 Board 32MB Memory USB-Ttl CH340g$ 12.93
DC 6-30V Support Micro USB 5V LED Display Automation Cycle Delay Timer Control Off Switch$ 8.62
DC 12V Dual MOS LED Digital Time Delay Relay Trigger Cycle Timer Delay Switch$ 8.62
Sg90 180 Degrees 9g Micro Servo Motor Tower PRO for Robot or RC Model$ 4.31

PKCELL 9V 6F22 Primary Battery 6LR61 Super Heavy Duty battery$ 0.86
PKCELL 6LR61 9V Super Alkaline Battery$ 1.29
9V battery connector$ 0.43
18650 Battery lithium rechargeable battery 4400mAh lithium battery 3.7 V$ 2.16
18650 Battery holder lithium rechargeable battery holder lithium battery 3.7 V$ 0.43
solenoid lock 12V door lock$ 10.78
Water Pump 5v submersible 3v 6V$ 6.90
Arduino nano$ 12.07
active BUZZER 3-24V$ 0.86