| 30 | | This is the stuff you need to purchase to build the HumiditySensor. Note that I've provided links to the things I bought during the development. You might find it cheaper somewhere else. Also note that you might need to buy like 10x of some items to get the price specified. |
| 31 | | |
| 32 | | 1x Cheap Arduino Nano without serial interface and usb connector\\ |
| 33 | | http://www.aliexpress.com/item/16Pcs-Lot-Pro-Mini-Module-Atmega328-5V-16M-For-Arduino-Compatible-Nano/710613095.html |
| 34 | | |
| 35 | | 8x Dupont cable Female->Female for radio module (and you might need 4 extra cables for your distance sensor)\\ |
| 36 | | http://www.aliexpress.com/item/New-Female-To-Female-40-pcs-Wire-Cable-Line-1p-1p-Pin-Connector-20cm-2-54mm/1045212486.html |
| 37 | | |
| 38 | | 1x NRF24L01+ wireless data transmission module 2.4Ghz\\ |
| 39 | | http://www.aliexpress.com/item/Free-shipping-NRF24L01-wireless-data-transmission-module-2-4G-the-NRF24L01-5PCS-LOT-upgrade-version-New/603756080.html |
| | 30 | To build this sensor you'll need one arduino + radio specified in the base kit found here:\\ |
| | 31 | http://code.mios.com/trac/mios_arduino-sensor/wiki/WikiStart#Buyingguide\\ |
| | 32 | With the following additional parts: |
| 44 | | |
| 45 | | (You might later need some housing and transformer or battery compartment as well) |
| 46 | | |
| 47 | | TOTAL SENSOR PRICE: $3,99 + $0.93 + $0,6 + $2,42 = $7,94 |
| 48 | | |
| 49 | | To download code to the cheapest Arduino Nano sensors (that is missing the serial USB port) you need to buy one of following as well. It is only attached while downloading code and can be reused between sensors. |
| 50 | | |
| 51 | | 1x Serial to USB adapter to download code to cheap Arduino Nanos\\ |
| 52 | | http://www.aliexpress.com/item/Free-Shipping-FT232RL-USB-To-Serial-Adapter-Module-USB-TO-232-For-Arduino-Download-Cable/827218126.html |
| | 37 | TOTAL SENSOR PRICE: $7,6 (arduino + radio) + $2.42 (HC-SR04) = '''$10''' |
