Fazley RabbiThe problem: the shed changes faster than you can check it
"It got very hot in the afternoon, the power went, and by the time we reached the shed many birds were struggling." Broiler and layer farmers know how quickly a shed can go wrong. Summer heat and humidity cause heat stress, cold nights are dangerous for young chicks, and poor ventilation lets ammonia from the litter build up. A power cut that stops the fans makes all of this worse within minutes.
If you or your caretaker cannot be in the shed every hour, a monitoring system acts as an extra pair of eyes. It is not a replacement for good shed design, a reliable generator, a trained caretaker and your veterinarian's advice.
What to monitor
- Temperature at bird height, in at least two or three places along the shed, not just near the door.
- Humidity, because high humidity makes heat harder for birds to cope with and affects how well cooling works.
- Power status, so you know the moment mains power fails.
- Fan running status, so you know when a fan has stopped even though the power is on.
- Ammonia, optionally. Sensors exist, but they need care and replacement in a dusty shed. Many farms start without one.
Target ranges depend on breed, bird age and season. Take them from your veterinarian and the breed management guide, and adjust them as the flock grows.
Monitoring first, then control
I usually suggest two stages.
Stage one: watch and alert.
- Install sensors and a small controller with battery backup.
- Send readings to a simple dashboard, and alerts to the owner and caretaker by call or SMS.
- Add a local alarm at the farm, since phones can be on silent.
- Watch the data for a few weeks to learn how your shed behaves through the day and night.
Stage two: automatic ventilation.
- Fans switch on in steps as temperature rises, and off as it falls.
- Cooling pads or foggers run only within a humidity limit, because in already humid weather adding water helps less and can make conditions worse.
- Brooding heaters for chicks can be controlled the same way in winter.
- Every automatic output has a manual switch that overrides the controller.
All switching of fans, heaters and pumps must be installed by a qualified electrician who checks the electrical load. Decide with them what happens if the controller itself fails; in most sheds it is safer for fans to keep running than to stop.
Power cuts and network gaps
- The monitoring device should have its own battery and keep sending alerts during an outage.
- A power-failure alert should go out immediately, so someone can start the generator or check that it started.
- If the generator is meant to start automatically, monitor that too. The alert that matters most is "power is out and the fans are still off."
- Mobile coverage in rural areas can be weak. Test the signal inside the shed, store readings on the device and send them when the network returns, and raise an alert if the device goes silent.
Common mistakes
- A single sensor near the door or in direct sunlight.
- No cleaning or checking, even though dust and ammonia wear sensors down over time.
- Fully automatic control with no manual override.
- Alerts going to one phone only.
- Wiring fans and heaters to a controller without an electrician checking the load.
Who does what
You and your veterinarian decide target ranges and the response plan. A qualified electrician handles power, load and generator wiring. An IoT developer designs the sensors, controller, alerts and fan logic and makes them work together. I build these systems as part of IoT device development. For keeping the generator itself in check, see generator fuel and running-hours monitoring.
Begin with one shed
Install temperature and humidity sensors in your most important shed, add power-failure alerts to two phones and a local alarm, and simply watch for a month. Once you understand the pattern and trust the readings, add fan control. If you want help planning it, get in touch.