Skip to Main Content

Regarding hardware, we used two independent but similar configurations. Our first test case used the DHT22 sensor and secondly we used the SDI-12 pressure transducer. Assembling the system hardware was relatively simple, requiring minimal soldering and very few tools (i.e. drill, soldering iron, solder, pin-wire connector, male-to-male jumpers). All of the parts were purchased online and are listed, excluding sensors, along with their prices and online purchasing locations in Table 1. Table 2 lists the same information for the two sensors we used.

Table 1

Individual item costs, purchasing locations, and total cost of hardware for logging, transmission, case, and solar power

Item (where to purchase)Cost
Arduino Uno (www.amazon.com/Arduino-UNO-board-DIP-ATmega328P/dp/B006H06TVG$16 
SIMCOM SIM900 Quad-band GSM GPRS Shield (www.ebay.com/itm/like/151121095914?lpid=82$35 
Miniature breadboard (www.sparkfun.com/products/12045$4 
SIM card and phone plan (www.ptel.com/phones$15 
MicroSD Card (www.amazon.com/b?node=3015433011$10 
Voltaic 6W Solar Panel and 4,000 mAh Battery (www.voltaicsystems.com/6-watt-kit$90 
Pelican 1050 Clear Micro Case (www.bhphotovideo.com/bnh/controller/home?O=&sku=257883&gclid=CjwKEAiAj$15 
Total cost $181 
Item (where to purchase)Cost
Arduino Uno (www.amazon.com/Arduino-UNO-board-DIP-ATmega328P/dp/B006H06TVG$16 
SIMCOM SIM900 Quad-band GSM GPRS Shield (www.ebay.com/itm/like/151121095914?lpid=82$35 
Miniature breadboard (www.sparkfun.com/products/12045$4 
SIM card and phone plan (www.ptel.com/phones$15 
MicroSD Card (www.amazon.com/b?node=3015433011$10 
Voltaic 6W Solar Panel and 4,000 mAh Battery (www.voltaicsystems.com/6-watt-kit$90 
Pelican 1050 Clear Micro Case (www.bhphotovideo.com/bnh/controller/home?O=&sku=257883&gclid=CjwKEAiAj$15 
Total cost $181 
Table 2

Costs and online locations of sensors used

Item (where to purchase)Cost
DHT22 Temperature and humidity sensor (www.sparkfun.com/products/10167$10 
SDI-12 Pressure transducer (www.meas-spec.com/product/t_product.aspx?id=9023#) ∼$700 
Item (where to purchase)Cost
DHT22 Temperature and humidity sensor (www.sparkfun.com/products/10167$10 
SDI-12 Pressure transducer (www.meas-spec.com/product/t_product.aspx?id=9023#) ∼$700 

Close Modal

or Create an Account

Close Modal
Close Modal