Research Article
Design and Development of a Flexible, Plug-and-Play, Cost-Effective Tool for on-Field Evaluation of Gas Sensors
Table 1
SentinAir system building costs.
| | Part | Cost (€) | Details |
| | Plastic box IP56 rated | 10 | Purchased from Amazon | | 3 LEDs | 1 | Various suppliers | | Push-button | 1 | Various suppliers | | Ac/dc converter (220 V ac in/5 V dc out, 3A out max.) | 9.15 | Purchased from https://it.rs-online.com/web/ | | USB stick modem (optional) | 9.35 | Purchased from Amazon | | Internet service provider (optional) | 12 | SIM card | | IP tunneling service (optional) | Free for one device | https://www.dataplicity.com/ | | Power cable, sockets, USB cable | 5 | Various suppliers | | Screws, small metal parts | 2 | Various suppliers | | Raspberry 3 B+ | 29.5 | Purchased from https://it.rs-online.com/web/ | | SD card 4 GB | 4 | Various suppliers | | LCSS USB adapter | 80 | Designed and built in the laboratory, cost includes electronic components |
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