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Bluetooth RSSI signal strength
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| # install bluetooth tools | |
| sudo apt-get install --no-install-recommends bluetooth | |
| # find MAC address (needs to be discoverable) | |
| hcitool scan | |
| # ping it | |
| sudo l2ping -c 1 12:34:56:78:90 | |
| # Connect by MAC | |
| sudo rfcomm connect 0 12:34:56:78:90:00 10 >/dev/null & | |
| # Signal strength: (range -10 ... 40) | |
| hcitool rssi 12:34:56:78:90:00 |
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