Why it exists
Make temperature, humidity, and soil-moisture conditions visible remotely and at the device.
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All projects01 /At a glance 01 / The problem 02 / My contribution 03 / Delivery scope 02 /Product experience 03 /System design System workflow 
ESP32 firmwareSampling, Wi-Fi, thresholds and channel mapping04 /In action 05 /Engineering choices 01 02 03 06 /The toolkit 07 /Delivery notes 3 inputs Blynk LED
2023 / Project case study
Smart Agri
Connected Crop Monitoring
An ESP32 agriculture-monitoring system that reads temperature, humidity, and soil moisture, sends telemetry to Blynk, and drives local status indicators.
The project in a minute.
What I built
Connected ESP32 sensing, Blynk telemetry, and local threshold indicators in one monitoring workflow.
What’s included
ESP32 sensing · Blynk telemetry
Explore the implementation- Type
- Connected Agriculture System
- Hardware
- ESP32
- Sensors
- DHT11 + Soil Moisture
- Telemetry
- Blynk over Wi-Fi
Read the full project context
I built Smart Agri as a connected sensing prototype around an ESP32, DHT11 climate sensor, analog soil-moisture probe, Wi-Fi, and Blynk. The firmware publishes field readings to remote widgets and drives local LED indicators for temperature, humidity, and moisture conditions, creating a compact device-to-cloud monitoring loop.
Connected agriculture projectWhat the product does.
01Environmental Sensing3 capabilities
Temperature Monitoring
The DHT11 feeds temperature readings into the connected monitoring loop.
Humidity Monitoring
Air humidity is sampled alongside temperature for a more useful crop-environment view.
Soil Moisture Input
An analog probe adds soil-condition information to the same device workflow.
02Connected Feedback2 capabilities
Blynk Telemetry
Three environmental signals are published over Wi-Fi to remote Blynk widgets.
Local Status Indicators
Dedicated LEDs translate sensor thresholds into immediate device-side feedback.
How the pieces connect.
Smart Agri sensing loop
Environmental inputs are sampled at the edge, published remotely, and translated into immediate local feedback.
Device-to-cloud monitoring
Environmental inputs
DHT11Temperature and air-humidity readings
Soil moisture probeAnalog soil-condition input
Sensor sampling
Edge controller
Telemetry and state
Remote and local feedback
Blynk dashboardRemote monitoring through virtual pins
LED indicatorsImmediate threshold feedback at the device
01Device-to-Cloud Sensing Loop
The ESP32 samples climate and soil inputs, publishes the readings to Blynk, and evaluates thresholds for local LED feedback.
- DHT11
- Provides temperature and humidity readings.
- Soil probe
- Provides the analog moisture input.
- ESP32 firmware
- Coordinates sampling, connectivity, telemetry, and indicators.
- Blynk
- Presents the remote monitoring channels.
- LED bank
- Shows local temperature, humidity, and moisture states.
A closer look at the build.
Actual project screens and documented visuals. Open any image for the full view.
The decisions behind the build.
Sensor Calibration
Analog moisture readings and environmental thresholds need calibration against the actual soil, enclosure, and crop conditions.
Connected and Local Feedback
Remote telemetry and on-device indicators must describe the same condition without conflicting states.
Configuration Hardening
A production revision should externalize network and provider credentials, rotate device tokens, and validate failed-sensor behavior.
Each tool has a job.
Open a technology to see its role in this project.
Embedded
C++ / Arduino
Sensor sampling, thresholds, and local indicators
ESP32
Connected controller and Wi-Fi runtime
DHT11
Temperature and humidity sensing
Soil moisture probe
Analog soil-condition input
Telemetry & Feedback
Blynk
Remote temperature, humidity, and moisture telemetry
Wi-Fi
Device-to-cloud connectivity
Virtual pins
Structured sensor channels for the mobile dashboard
LED indicators
Local threshold feedback for field conditions
The documented scope.
Environmental Signals
Temperature, humidity, and soil moisture share one monitoring workflow.
Remote Telemetry
The ESP32 publishes readings over Wi-Fi for remote observation.
Immediate Local Feedback
Threshold indicators keep essential status visible at the device.
Explore further
Want to go deeper?
Explore the available resources or talk with me about the design and engineering behind this project.