๐ ๏ธ MAKER GUIDEMay 02, 2026โขโฑ๏ธ 1 min readโข๐ณ๐ต Tested in Nepal
Remote Farm Irrigation & Motor Control via SMS with SIM800L GSM
Turn agricultural tubewell water pumps on and off from anywhere in Nepal simply by sending a text message with the SIM800L GSM module.
๐ ๏ธ BILL OF MATERIALS (BOM)
Required Hardware & Component Checklist
Curated components verified for this project. Check the items you need, adjust quantities, and add straight to cart:
Estimated Total (5/5 items):
NPRย 2,550
โ Cash on Delivery across Nepal
All parts selected
NPRย 1,100
NPRย 750
NPRย 150
NPRย 200
NPRย 350
Remote Farm Irrigation & Motor Control via SMS with SIM800L GSM
Control deep-well irrigation pumps across Nepal by sending "MOTOR ON" SMS commands through the SIM800L V2.0 5V GSM Module to switch a 12V 30A Power Relay.
Hardware Bill of Materials:
- Cellular Modem: SIM800L V2.0 5V Wireless GSM GPRS Module with Antenna
- Microcontroller: Arduino Nano V3.0 Solderless
- Power Contactor: 12V 30A Relay
- Power Regulation: LM2596 DC-DC 3A Step-Down Module + 12v 2A Power Supply Adapter
Circuit Pinout & Wiring Connections:
| SIM800L GSM Pin | Arduino Nano Pin | Function / Description |
|---|---|---|
| SIM800L 5V / GND | LM2596 (Regulated 4.0V-5.0V @ 2A) | GSM Burst Power Rail |
| SIM800L TXD | Pin D2 (SoftwareSerial RX) | Incoming SMS Text Responses |
| SIM800L RXD | Pin D3 (SoftwareSerial TX) | AT Commands from Arduino |
| 12V 30A Relay IN | Pin D7 | High-Power Tubewell Motor Trigger |
โ Previous Guide
Automated Industrial Color Sorting Conveyor Machine with TCS3200
Next Guide โ
Wireless Wi-Fi Digital Scrolling LED Notice Board with MAX7219 & ESP8266
