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Ruby toolkit for the RS-BTWATTCH2 Bluetooth power meter

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ruby-btwattch2

Ruby toolkit for the RS-BTWATTCH2 Bluetooth power meter

Usage: btwattch2.rb [options]
    -i, --index <index>              Specify adapter index, e.g. hci0.
    -a, --addr <addr>                Specify the destination address.
    -n, --interval <second(s)>       Specify the seconds to wait between updates.
        --on                         Turn on the power switch.
        --off                        Turn off the power switch.
        --set-rtc <time>             Specify the time to set to RTC.
        --set-rtc-now                Set the current time of this system to RTC.
        --test-led                   Blink the LED on the main unit.

TBD

Usage

# ruby btwattch2.rb --addr CB:DF:6B:12:34:56
V = 104.29123878479004, A = 1.1373979076743126, W = 106.03327941894531
V = 104.19976472854614, A = 1.1281732693314552, W = 105.39636832475662
V = 104.17768478393555, A = 1.1366924941539764, W = 105.92031782865524
...

また、Mackerel のカスタムメトリック投稿に準拠したフォーマットで出力することも可能です。
注: メトリクスの epoch は本体の RTC をもとに設定されています。RTC は定期的に同期してください。(後述)

# ruby mackerel.rb --addr CB:DF:6B:12:34:56 --metric-name wattchecker1
wattchecker1.voltage    104.80763912200928      1609304963
wattchecker1.ampere     1.120739296078682       1609304963
wattchecker1.wattage    104.89565205574036      1609304963

時刻同期

以下を systemd-timer や cron などで

# ruby btwattch2.rb --addr CB:DF:6B:12:34:56 --set-rtc-now

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