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BT Mesh is used to link all sensors together. Each sensor board has a switch input and PIR (Passive Infra Red) sensor. Optionally a microphone. More than one sensor has to give a trigger before the alarm goes off to reduce false alarms.
This project will use the EZ-BT Bluetooth Mesh Development Kit with one board located in each room to monitor. The motion sensor detects when someone enters the room and turns on the light. After motion is not detected for a defined period, the lights automatically turn off.
Farmers spend endless hours of driving to their field to check on their crops and manually operate the irrigation systems. This is time and labour intense with significant costs to the farmers and sub-optimal use of expensive resources. By using IoT to deliver unobtrusive easy to use and highly reliable systems for precision monitoring and control of irrigation. So, we are going to make an IoT hardware named “Agri-Stick” which is going to measure the four Agri parameters including Soil Temperature, Soil Moisture, Atmospheric Temperature and Atmospheric Humidity. These values are going to be updated in the AWS cloud through LoRa technology with Raspberry Pi as single channel LoRa gateway. These values can be monitored in real time from both web browser and mobile phone. It enables growers to make decision based on in-field data. Thus, it saves the time and money for farmers and improve yield and crop quality. By extending the sensors in the Agri-Stick and analysing the data with proper methods, we can use it for measuring soil nutrition, pest detection, and crop planning, spraying pesticides, irrigation and harvesting crops. It prevents over and under watering, reduces crop diseases, confirms water delivery as planned, automate tasks that had been done manually, water savings, labour savings and re-allocation to higher value activities.
Print, assemble and program your own Simon Says game. How much of the randomly generated colour pattern can you memorise and repeat back? Not sure, then why not make one and find out. With an Arduino Nano at its core this project also incorporates an OLED screen, passive buzzer and some big bright buttons.