This M32C/84-based office message board project allows you to display a preprogrammed message like “do not disturb”, “in the Lab”, “At Lunch” etc on the LCD positioned at the door. The project has a keypad which is placed on a desk. On this keypad there are 15 buttons and 6 LEDs for control and [...]
SmartProbe is simple low cost moisture and temperature alarm system for plants. Insert it in the plant’s root system and it measures the moisture and temperature. It sounds an alarm if the moisture or temperature goes out of preset limits. Shut it off with a gentle tap or knock on it to ask it [...]
Here is a circuit that can be used to detects the leakage of LPG gas and alerts the user through audio-visual indications. The circuit uses SEN-1327 gas sensor module from RhydoLABZ. Its output goes high when the gas level reaches or exceeds certain point. A preset in the module is used to set the threshold. [...]
The WatchDuck is an accelerometer-based low cost wireless pool alarm. It will give an alert when a child or an object fell into water. All operation in this project is controlled by PIC 18F23K20 microcontroller. The alarm is composed of two parts: the detector and the base station. The detector is using an accelerometer module [...]
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