Project kits, built to work at your demo

A complete, working LPG leak detector built end to end: sensor, alarm, custom 3D printed enclosure, firmware and a live web dashboard. It monitors the air for LPG, butane and propane, sounds a buzzer the moment the concentration crosses your set point, and serves a real-time dashboard to any phone or laptop on the same Wi-Fi. No app to install, no internet needed.

A bench rig for measuring force and weight with a 5 kg strain-gauge load cell, the standard setup for load, deflection and calibration experiments.

The mount is the part that matters. A load cell only reads correctly when it's clamped as a true cantilever: fixed rigidly at one end, loaded at the other, with clearance underneath so the beam can flex. Get the spacers wrong or bolt it flat and the readings drift, sit non-linear, or never zero, which is the most common reason these projects fail. The base and platform in this kit are printed to hold that geometry, so the mechanical side is right before you start.

A servo sweeps an ultrasonic sensor through 180° and plots everything it finds on a live radar screen on your laptop. A good first project for distance sensing, servo control and serial data.

Four metal-gear servos, a rotating base and a two-finger gripper, driven by two joysticks in a printed control box. Pick up and place small objects on your desk, and explain joint angles and servo control at your demo.

A 5-sensor IR array and a PID loop keep this robot on a black line, through curves and sharp turns. Runs on two 18650 cells (not included).

Measures temperature, humidity, pressure, light and rain, shows the readings on a small OLED and serves a live dashboard to any phone on the same Wi-Fi. The louvred printed shield keeps the sensor out of direct sun so the readings stay honest.

Tap an approved card or tag and a servo slides the latch open. Unknown cards get a buzzer, and the LCD shows who was let in.