Sensor nodes
Contents
Sensor Nodes
The goal is to have a working, mesh network of sensors (i.e. light, temperature, presence) and actuators (motors to open / close a window, turn lights on and off, etc.).
The solution is centred around a raspberry pi that has a NRF24L01+ chip, and works as a central point for gathering all of the data received via the radio. It then builds a webpage transmitting the data in real time and then rules are applied so that we can say, activate one motor if the value of a sensor is below 20°
The nodes are based on the ATTiny85 AVR micro-controller and another NRF24L01+ chip.
Parts
- Raspberry Pi
- x + 1 NRF24L10+ chips, where x is the number of nodes
- x ATTiny
Sensors
Here is a list of the sensors I made, complete with Kicad files (schematics and PCB layouts)
= Light Sensor
Uses a light dependant resistor (todo)
Temperature & Humidity
(todo)
Presence (PIR)
(todo)
Gaz
(todo)
Piezo
(todo)
Sound
(todo)
Actuators
RGB Led strip
Be able to change the color
Window opening
Use a motor to open / close a window
Blinders
(todo)
Sound
(todo)
