IoT In The Matrix: Mocking External Dependencies For IoT Systems Using Physical Hardware
summary
Argues that low‑cost COTS hobby hardware can replace expensive lab gear to mock Wi‑Fi, GNSS, battery and GPIO interfaces so an IoT device is unaware it’s not in the real world. Demonstrates a Raspberry Pi + USB Wi‑Fi adapter + hostapd plus 30 dB attenuators and RP‑SMA adapters to create a reconfigurable AP (~$128 of parts), an SDR driven by GPS‑SDR‑SIM plus DC‑block and spectrum analyzer (SDR ~$1,600 or cheaper hobby variants) to emulate GNSS, and bench power meters to log consumption. Solutions work with caveats: device connector required, RF leakage and legal transmission limits, and lower throughput vs dedicated lab instruments.
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chapters (10)
- 0:00IoT testing challenges
- 2:32Conventional mocking fails for IoT
- 7:05Reconfigurable Wi-Fi access point
- 13:53Hardware for Wi-Fi mocking
- 17:06Software setup for Wi-Fi simulation
- 20:21GPS signal mocking challenges
- 27:11GPS simulation with SDR
- 34:49Measuring IoT power consumption
- 39:26Mocking GPIO with Raspberry Pi
- 44:34Conclusion and experiment
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