I think this topic could be helpfull for all of us.
Here is a list of hardware to build sensors.
All the items are sold on Ebay or Aliexpress for really low prices.
Usual delivery time is 2-4 weeks depending on your location.
Post your parts that are not yet on the list and I will add them.
If you post links use the short links for ebay : http://cgi.ebay.com/“eBay item number”
Arduino compatible boards
| Picture | Component | Quantity | Link | Notes |
|---|---|---|---|---|
 |
Arduino Nano | 1pcs | aliexpress / ebay | ebay DIY kit |
 |
Arduino Uno R3 | 1pcs | aliexpress | - |
 |
Arduino Pro Mini Compatible 3.3V | 1pcs | ebay | 10 is cheaper aliexpress |
 |
Arduino Pro Mini Compatible 5V | 1pcs | aliexpress | 10 is cheaper aliexpress |
 |
FTDI USB to TTL Serial Adapter | 1pcs | aliexpress | you need it for the arduino pro mini 3.3v/5V to program |
ATTINY
| Picture | Component | Quantity | Link | Notes |
|---|---|---|---|---|
 |
ATTINY85 | 5pcs | ebay | Here you can buy 10 pieces ebay |
Radios
| Picture | Component | Quantity | Link | Notes |
|---|---|---|---|---|
 |
Wireless Transmitter and Receiver Link Kit Module | 1pcs | ebay/ebay | - |
 |
Wireless Transmitter 433Mhz | 5pcs | ebay | - |
 |
Wireless Door Window Magnet 433MHZ | 10pcs | chinamade | !Only sends false command! |
 |
Wireless Weather Station Digital Thermometer Humidity Sensor 433MHz | 1pcs | banggood | weather1 protocol |
 |
ESP8266 Serial Port WIFI Wireless Transceiver Module. Support AP,STA,AP+STA modes | 1pcs | banggood ebay | Breadboard friendly and more GPIO’s banggood |
| Wireless leakage water sensor 433MHZ | 1pcs | ebay | - | |
| nrf24l01 nrf24l01+ wireless module 2.4GHz | 10pcs | Aliexpress | - |
Regulators
| Picture | Component | Quantity | Link | Notes |
|---|---|---|---|---|
 |
DC-DC Step Up Boost Module | 1pcs | ebay | - |
Batteries and Power
| Picture | Component | Quantity | Link | Notes |
|---|---|---|---|---|
 |
Battery Holder 2 X AA | 10pcs | ebay | - |
 |
Battery Holder 2 X AAA | 10pcs | ebay | - |
Cables and Prototyping
| Picture | Component | Quantity | Link | Notes |
|---|---|---|---|---|
 |
Double Side Prototype PCB Tinned Universal Breadboard | 10pcs | ebay | 5x7 cm |
 |
Solderless breadboard | 5pcs | ebay | - |
 |
Female-Female 10cm | 40pcs | ebay | - |
 |
Male-Female 10cm | 40pcs | ebay | - |
Temperature and Humidity
| Picture | Component | Quantity | Link | Notes |
|---|---|---|---|---|
 |
DS18B20 Waterproof Dallas Temperature Sensors | 1pcs | aliexpress | - |
 |
DS18B20 Dallas Temperature Sensors | 10pcs | ebay | - |
 |
DHT22 Module | 1pcs | aliexpress | - |
 |
DHT11 Module | 1pcs | aliexpress | - |
Motion
| Picture | Component | Quantity | Link | Notes |
|---|---|---|---|---|
 |
Mini PIR Motion Sensor Module | 1pcs | ebay | - |
 |
HC-SR501 PIR Motion Sensor Module | 5pcs | ebay | - |
Displays
| Picture | Component | Quantity | Link | Notes |
|---|---|---|---|---|
 |
Blue LCD Display 20x4 characters | 1pcs | ebay | - |
 |
Blue LCD Display 20x2 characters | 1pcs | ebay | - |
 |
Green LCD Display 20x2 characters | 1pcs | aliexpress | - |
Relays
CAUTION: Working with high power application is dangerous should only be done by a qualified person.
| Picture | Component | Quantity | Link | Notes |
|---|---|---|---|---|
 |
1 Channel Omron SSR | 1pcs | ebay | 1 channel G3MB-202P Solid State Relay Module 240V 2A Output with Resistive Fuse |
Boxes
| Picture | Component | Quantity | Link | Notes |
|---|---|---|---|---|
 |
Project boxes | 2pcs | ebay | - |
 |
Waterproof boxes | 1pcs | ebay | 100x68x50mm |
 |
Waterproof boxes | 1pcs | ebay | 65x58x35mm |
 |
Sensor boxes | 5pcs | aliexpress | Some diverend looks : aliexpress aliexpress aliexpress |
Sites
| Site | Link | Notes |
|---|---|---|
| KAKU | KAKU Dutch - KAKU international | - |
| ELRO | ELRO | Same hardware like KAKU |
| Intertechno | Intertechno | Same hardware like KAKU |
| Chacon | Chacon | Same hardware like KAKU |
| Home Easy | Home Easy | Same hardware like KAKU |
| Conrad | Conrad | Loads off Electronics |
| Raspberry Pi | SOS Solutions | Dutch vendor for the Raspberry Pi |
| Raspberry Pi | Pollin | German vendor for the Raspberry Pi |
| Z-wave | Cyberport | German vendor for the Z-wave and other electronics |
