Simplify the board architecture
Moving from Arduino Uno plus a separate ESP8266 to NodeMCU combines sensing and Wi-Fi on one board.
Connected hardware2025–26
AgroBot.
A little hardware. A closer look at soil.
A compact soil-monitoring device with Wi-Fi telemetry, a live dashboard, and local alerts that keep working offline.
- MY CONTRIBUTION
- Hardware design, firmware & dashboard
- CONTEXT
- IIT Patna · Capstone-I
- STATUS
- IoT prototype
AGROBOT / PHYSICAL PROTOTYPE01THE PROBLEM
What needed solving?
Soil conditions are difficult to track remotely. AgroBot explores a simple way to sense moisture, signal unsafe conditions locally, and bring readings to a dashboard.
02MY CONTRIBUTION
Where I came in.
I designed and built a compact prototype around a NodeMCU V3, resistive soil-moisture sensor, and piezoelectric buzzer. HTTP telemetry pairs current values with a seven-day trend view.
03KEY DECISIONS
The thinking behind it.
Keep an offline feedback path
The buzzer signals dry or waterlogged conditions independently of the network.
Show change over time
A current reading gives immediate context. Historical readings show how conditions evolve.
04OUTCOME & NEXT STEPS
Built. Learned.
Still improving.
Built as a Capstone-I prototype at IIT Patna. My résumé documents hardware, enclosure, telemetry, and dashboard work.
Where it stands today
The public README marks server/database integration and the final end-to-end test as pending. No measured farm deployment or water-saving result is claimed.
What comes next
Validate the complete data path and compare sensor behaviour across soil conditions before field deployment.