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MQTT-based voltage daemon built on Network UPS Tools
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| #!/bin/bash | |
| #set -eu | |
| ha_prefix="homeassistant" | |
| ha_config_suffix="config" | |
| ha_state_suffix="state" | |
| ha_component="sensor" | |
| ha_object_id="ac_voltage_meter_powercom" | |
| ha_common_prefix=$ha_prefix/$ha_component/$ha_object_id | |
| ha_config_topic=$ha_common_prefix/$ha_config_suffix | |
| ha_state_topic=$ha_common_prefix/$ha_state_suffix | |
| ha_config=$(cat <<JSON | |
| { | |
| "name": "AC Input Voltage", | |
| "unique_id": "$ha_object_id", | |
| "state_topic": "$ha_state_topic", | |
| "device_class": "voltage", | |
| "state_class": "measurement", | |
| "unit_of_measurement": "V" | |
| } | |
| JSON | |
| ) | |
| echo Using config topic: $ha_config_topic | |
| echo "Using config: $ha_config" | |
| mosquitto_pub -r -t "$ha_config_topic" -m "$ha_config" | |
| previous_voltage=-1 | |
| while true | |
| do | |
| upsinfo=$(upsc powercom 2>/dev/null |grep 'input.voltage:') | |
| voltage=${upsinfo#input.voltage: } | |
| voltage=${voltage%.0} | |
| if [ $voltage != $previous_voltage ] | |
| then | |
| echo "Publishing $voltage" | |
| mosquitto_pub -t $ha_state_topic -m $voltage | |
| previous_voltage=$voltage | |
| fi | |
| sleep 1 | |
| done |
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Logger for Home Assistant:
Requires: