GSM GPRS HTTP POST Kit with Arduino Uno + DHT22
Send Sensor Data to the Web Over GSM: Arduino GPRS HTTP POST Kit with DHT22
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Imagine building a device that monitors temperature and humidity anywhere — a farm, a remote weather station, or a school project — and posts that data directly to a website or cloud platform using only a cellular network. This kit gives you everything to assemble a working GSM-based data logger, sending DHT22 sensor readings as HTTP POST requests via a SIM800L GPRS module.
What You'll Build
You’ll create a standalone monitoring unit that reads precise temperature and humidity from the DHT22, connects to a mobile network through the SIM800L, and delivers that data as structured HTTP requests to any server you choose. Projects that work without WiFi are suddenly possible — your sensor can report from a field, a warehouse, or a moving vehicle as long as there’s a 2G signal.
What You'll Learn
- How to interface a SIM800L GSM/GPRS module with Arduino using AT commands
- Establishing a GPRS data connection and sending HTTP POST requests
- Formatting sensor data as JSON or URL-encoded parameters for a server
- Reading and calibrating the DHT22 digital temperature and humidity sensor
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| SIM800L GSM | 1 |
| DHT22 | 1 |
| LM2596 Buck Converter | 1 |
| 1000µF 25V Caps | 2 |
| 10kΩ Resistors | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This kit is perfect for CBSE Class 11–12 students exploring IoT in computer science, B.Tech ECE/EEE first-year projects, ATL Tinkering Lab innovators, and hobbyists who want to build a practical cellular sensor network. If you’re preparing for a science exhibition or Smart India Hackathon prototype, this kit gives you a head start without hunting for separate modules and power supplies.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
Scan the QR code on your kit box to access the AI companion, which gives step-by-step answers specific to this project. You can also message us on WhatsApp for human support if you need deeper troubleshooting.
Does this kit work with any GSM network in India?
Yes — the SIM800L operates on 2G GSM bands (900/1800 MHz) that all major Indian operators still support in many areas. You’ll need an active 2G-enabled SIM card (Airtel, Vodafone Idea, BSNL) with a data plan.
Can I post data to my own website or cloud platform?
Absolutely. You configure the HTTP POST endpoint in the code to any URL you control. We provide templates for ThingSpeak, Blynk, and custom PHP/Node servers; you can adapt the JSON or form-data payload to your needs.
What if my SIM800L doesn’t connect or restarts?
The SIM800L can draw up to 2A peaks when connecting. The included LM2596 buck converter and 1000µF capacitors supply stable 4V power and handle inrush. Follow the wiring diagram closely, and ensure your power source can deliver 2A — a 5V 2A USB adapter works perfectly.
SIM800L sends sensor data as HTTP POST to a web server over GPRS cellular data connection.
What's in this kit
- Arduino Uno R3
- SIM800L GSM
- DHT22
- LM2596 Buck Converter
- 1000µF 25V Caps x2
- 10kΩ Resistors x5
- 400-pt Breadboard
- M-M Wires x20
Other projects you can build
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items