Sensor nodes - Revision history

Noskill at 10:24, 17 August 2015

2015-08-17T10:24:55Z

Noskill at 10:24, 17 August 2015

2015-08-17T10:24:11Z

Noskill: /* Light Sensor */

2015-08-17T10:06:10Z

‎Light Sensor

Noskill at 18:57, 12 August 2015

2015-08-12T18:57:00Z

Noskill at 18:43, 12 August 2015

2015-08-12T18:43:10Z

Noskill at 18:42, 12 August 2015

2015-08-12T18:42:39Z

Noskill: Created page with "= 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..."

2015-08-12T18:42:16Z

Created page with "= 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..."

New page

= 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)

@@ Line 54: / Line 54: @@
 Notes:
 The next step will be to add mesh-networking capabilities by sending a broadcast packet and waiting for the reply from the others nodes, and create a table of reachable nodes.
 It would be nice to add some randomness in the delays of transmission otherwise we will only receive packets from nodes emitting at a precise moment
 Also, at the moment the packets are received in a dumb fashion, so we are not sure if the values will correctly update. We could correct this by adding a fifo queue on the receiving node (the raspi) and treat the packets one by one, not ignoring some while the last packet is treated.

@@ Line 11: / Line 11: @@
-== Sensors ==
+=== Sensors ===
-Here is a list of the sensors I made, complete with Kicad files (schematics and PCB layouts)
+Here is a list of the sensors I made/will made, complete with Kicad files (schematics and PCB layouts)
 === Light Sensor ===
 [[File:Light-B Cu.svg]]
@@ Line 20: / Line 21: @@
 (todo)
-=== Temperature & Humidity ===
+==== Temperature & Humidity ====
 (todo)
-=== Presence (PIR) ===
+==== Presence (PIR) ====
 (todo)
-=== Gaz ===
+==== Gaz ====
 (todo)
-=== Piezo ===
+==== Piezo ====
 (todo)
-=== Sound ===
+==== Sound ====
 (todo)
-== Actuators ==
+=== Actuators ===
-=== RGB Led strip ===
+==== RGB Led strip ====
 Be able to change the color
-=== Window opening ===
+==== Window opening ====
 Use a motor to open / close a window
-=== Blinders ===
+==== Blinders ====
 (todo)
-=== Sound ===
+==== Sound ====
 (todo)

@@ Line 1: / Line 1: @@
 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 ==
@@ Line 10: / Line 8: @@
 * x + 1 NRF24L10+ chips, where x is the number of nodes
 * x ATTiny
 == Sensors ==