Fazley RabbiIoT in agriculture means placing small sensors and controllers on a farm, pond, shed or store so that conditions such as soil moisture, water quality or temperature are measured automatically and sent to a phone. In Bangladesh it is most useful where a problem builds quietly and costs a lot when noticed late: a pond losing oxygen at night, a poultry shed overheating, a cold store drifting warm during a power cut. It is not a replacement for farming knowledge, and it will not fix a weak business on its own.
What "IoT on a farm" actually looks like
A typical setup has three parts:
- Sensors that measure something: soil moisture, air temperature and humidity, water temperature, dissolved oxygen, pH, or the level in a tank.
- A small controller, often built around a board such as an ESP32, that reads the sensors and sends the readings over Wi-Fi, mobile data or a long-range radio such as LoRa.
- A dashboard or alert on a phone, so a farmer or manager sees the readings and gets a message when something needs attention.
Some setups also act: switching on a pump, an aerator or a fan. That step needs more care, because a wrong decision by a machine can do real harm. Many projects start by only measuring and alerting, and add control later.
Where it helps most
Fish and shrimp ponds
Oxygen in a pond can fall at night, especially after still, cloudy days, and the damage may be done before anyone wakes. A dissolved-oxygen and temperature sensor with a phone alert gives the farmer a chance to run aerators in time. See pond water quality monitoring for how such a system is set up.
Poultry sheds
Heat, humidity and poor ventilation stress birds quickly. Sensors at several points in a shed show where conditions differ and warn when fans or cooling are not keeping up. Read more on poultry shed climate monitoring.
Irrigation, nurseries and greenhouses
Watering on a fixed schedule wastes water and electricity on some days and leaves plants dry on others. Soil moisture readings let you water when the soil actually needs it. The soil moisture irrigation page explains the approach.
Cold storage and produce
For potatoes, fruit, vegetables and fish, a cold room that quietly warms up overnight can ruin a whole batch of stock. Temperature logging with alerts helps staff react in time, and the history helps when you need to show how produce was stored.
The honest limits
IoT on a farm is harder than IoT in an office. Before you spend, think about these:
- Connectivity. Mobile signal can be weak at the edge of a field or beside a river. LoRa or a nearby gateway can help, but this is a design decision, not an afterthought.
- Power. Load-shedding and long rural lines mean devices need batteries, solar or both. A sensor that dies in a power cut fails exactly when you need it.
- Weather and handling. Heat, rain, flooding, dust, animals and curious children all damage equipment. Enclosures and mounting matter as much as the electronics.
- Sensor care. Some probes, especially water-quality probes, need regular cleaning and calibration. A dirty probe gives confident, wrong numbers.
- The person at the other end. An alert is only useful if someone can act on it. If the night guard cannot start the aerator, the alert needs to reach someone who can.
- Scale. On a small plot, a farmer's own eyes and routine may be enough. IoT earns its place where the loss from a missed problem is large, or where the site is too big or too remote to check often.
Common questions
Do I need internet at the farm? Not always. Some systems store readings locally and send alerts by SMS. Others use a local gateway that collects data from many sensors. The right choice depends on where the site is and what you need to know in real time.
Can the screens and alerts be in Bangla? A custom dashboard or alert message can be written in Bangla. Ask for this at the start if the people using it read Bangla more comfortably.
Can the system run pumps and aerators automatically? It can, but start with alerts, learn how the site behaves, and then add automatic control with a manual override and a named person responsible.
A sensible way to start
- Pick one problem that has cost you money before, such as oxygen crashes, heat stress or spoiled stock.
- Decide who receives the alerts and what they will do when one arrives.
- Run a small pilot on one pond, one shed or one room for a full season.
- Check that the readings match a handheld meter, and that the device survives the weather.
- Expand only after the pilot has proven useful.
If you would like to talk through a pilot for your farm, the IoT development service page explains how I approach these projects.