92 lines
1.7 KiB
Markdown
92 lines
1.7 KiB
Markdown
# esphome
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## Installation
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1. https://nixos.org/download/
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2. direnv
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Your PC timezone is important for esphome schedules, as they will use compiler's
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timezone when syncing the clock (NTP).
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## Compiling
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```
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$ cp -i secrets.yaml{.sample,}
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$ cp -i templates/secrets.yaml{.sample,}
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# Edit both secrets.yaml files.
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$ ./reflash.sh compile ''
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```
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## Running
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```
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$ ./reflash.sh
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```
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or
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```
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$ esphome run file.yaml
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```
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Look up list of runnable configurations inside `reflash.sh` script.
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## Running remotely
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If you don't have esphome installed on a computer that you connect ESP chip to,
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use https://web.esphome.io/ to upload the compiled binary.
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The binary resides in
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`.esphome/build/<component>/.pioenvs/<component>/firmware.factory.bin`.
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## Serial console
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Use `screen /dev/tty.usbserial-0001 115200` (or `/dev/ttyUSB*`) to read the
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console.
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## Cleaning up removed MQTT entities
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This can be done via `clean-mqtt` command line:
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```shell
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$ esphome clean-mqtt spare-power-meter.yaml \
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--topic homeassistant/binary_sensor/<component>/<entity>/config
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```
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or
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```shell
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$ esphome clean-mqtt spare-power-meter.yaml \
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--topic homeassistant/+/<component>/#
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```
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When `--topic` is specified, the YAML file will only be used to extract MQTT
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credentials. All other topics will remain untouched.
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## Hardware: heating
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### Photoresistor
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Schematics:
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1. A0 -> 10K Ohm -> GND
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2. A0 -> Photoresistor -> 3V3
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Assembly:
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1. Put isolation band on the legs
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2. Solder legs to dupont wire (the other end has to be male)
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3. Bath it in the insulation varnish
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4. Think the isolation band with a fan
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Color coding for RJ45 cable:
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- orange: furnace
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- blue: floor
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5528 photoresistor: 8-20K resistance by brightness, up to 1 MOhm.
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Brightness range is 1.47 - 2.2V.
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Darkness is 3.267V.
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