um34c docker container

Features

• allow to connect um34c via bluetooth and log data in json format each 1 min ( tunable )

• for backend the um34c project was used

• startup parameters of the logger app.js can be customized in the entrypoint.sh file

Motivations

through docker the um34c project can be built as it was on bionic version of ubuntu; actually I have a different distro and dependancies results in failing build.

Prerequisites

• docker-ce

• know the device bluetooth address ( scan devices )

• rfcomm from bluez package ( install with apt install bluez )

• jq for logging examples ( install with apt install jq )

Build

./build.sh

Run

sudo rfcomm bind 0 aa:bb:cc:dd:ee:ff
./run.sh

Logging data

following and example to log voltages:

docker logs -n 1 -f um34c | while read line; do echo "$(echo $line | jq -r .voltage)V $(echo $line | jq -r .current)A $(echo $line | jq -r .record.current)mAh"; done