10 LOGO! Project Ideas for Home and Garden
One logic module, ten jobs — from aquarium lighting to manure-shed ventilation. Here are 10 LOGO! project ideas with simple block diagrams, so you can pick one, sketch the logic, and test it in the simulator before you touch any wiring.
How to work with these ideas
Pick one job
Don't start with the whole house at once — choose one idea, like irrigation or a coop door, and finish it properly.
Sketch the logic
Write down which sensors feed the inputs and what LOGO! should do on the outputs — that's 90% of the work, before you touch any hardware.
Test it in LOGO! Soft Comfort
Build the function blocks (FBD) and run them on your computer, seeing the result before anything is wired into the panel.
Mount it on a DIN rail and test
Once the logic works in simulation, install the base module, connect the sensors and outputs, and check every mode on site.
Five ideas that show the logic in action
project ideas in one module
From irrigation to a frost-protection loop — each idea is its own simple module. If the ideas start overlapping and the points add up, that's your cue to think about KNX instead.
Garden irrigation on schedule and moisture
LOGO! turns on a pump or valve at a set time, or when a moisture sensor shows dry soil, and a timer block stops it from watering too long.
Chicken coop door and light
A light sensor raises the door at dawn and lowers it at dusk; a separate output turns on lighting once daylight hours get too short.
Greenhouse ventilation by temperature
A temperature sensor opens a vent motor or window when the greenhouse gets too hot, and closes it once it cools down.
Holiday light imitation
Random and timer blocks switch room lights on and off at varying times instead of the same schedule every day, while you're away from home.
Winter frost-protection loop
When the outside temperature nears freezing, LOGO! turns on a circulation pump or heating cable, and switches it off once the risk has passed.
What you get for each idea
Not just inspiration — a real starting point to build from.
- A simple block diagram for each of the 10 ideas
- A list of which sensors and outputs each idea needs
- Tips for testing the logic in the LOGO! Soft Comfort simulator
- Guidance on combining two ideas into one module
- Links to the beginner guide and your first project
Frequently asked questions
How do I automate a well or cistern pump?
A level sensor or pressure switch feeds the LOGO! input — the module turns the pump on when the level drops and off once it recovers, with a bit of hysteresis so the pump doesn't click on and off too often.
Can LOGO! control aquarium or terrarium light and temperature?
Yes — a timer block runs the light on a schedule, while a temperature sensor with hysteresis drives a heater or fan relay to keep the range safe for your species.
How do I build a staircase light that turns itself off?
A motion sensor on the input turns the light on, and an off-delay timer block switches it off after a set time — no need to remember to flip a switch.
What does LOGO! do in a drying room?
A humidity or temperature sensor cycles a fan and heater, and a timer block stops the system from running non-stop, which protects both the equipment and whatever you're drying.
How do I control a garage compressor with LOGO!?
A pressure switch feeds the input — LOGO! starts the motor when pressure drops below the threshold and stops it once it's reached, with a safety timer against switching on too often.
Find your first LOGO! project
Pick one idea out of the ten, and let's start with the sensors and module you'll actually need.