Setup

Hardware

• Raspberry Pi 4
• ESP32 dev boards: https://www.amazon.com/dp/B09DPH1KXF
• Smart plugs: https://cloudfree.shop/product/cloudfree-smart-plug-runs-tasmota/
• 3D printer: https://www.amazon.com/gp/product/B073ZLSMFT/
• IR transmitter diodes: https://www.amazon.com/HiLetgo-Infrared-Emitter-Receiver-Emission/dp/B00M1PN5TK

Local Pi address: 192.168.1.13 Local Home Assistant address: 192.168.1.13:8123 Local Octoprint address: 192.168.1.13:5000

On laptop

• Install ESPHome (brew install esphome): https://esphome.io/guides/installing_esphome.html
• cp esphome/template_secrets.yaml esphome/secrets.yaml
• Add valid values for esphome/secrets.yaml

On router

Statically reserve 192.168.1.13 for the Pi.

On raspberry pi

• Follow setup.sh (not totally scripted, copy/paste the lines to make sure they succeed)
• Set up the printer settings
  • https://www.reddit.com/r/MPSelectMiniOwners/comments/6ky6jj/octoprint_setup/
  • https://plugins.octoprint.org/plugins/malyan_connection_fix/
  • Use custom bounding box of -1 for X axis

Adding a new smart plug

• Connect to the tasmota wifi. If the tasmota wifi isn't appearing:
  • It's possible the specific power outlet isn't playing well with the plug, for whatever reason. Try another outlet.
  • It's possible the plug was already configured to the home network. Visit http://192.168.1.1/ and look among "Attached Devices" for devices similar to TASMOTA-XXX-YYY.
• Provide the home network wifi credentials
  • Not the extension home network, just the base name
  • If you provide the wrong network, you can reset the device by turning it on/off 7 times: https://tasmota.github.io/docs/Device-Recovery/#fast-power-cycle-device-recovery
• Provide a new hostname (Configuration > Configure Other > Device Name + Friendly Name)
• Provide the 192.168.1.13 host to the MQTT Tasmota settings (Configuration > Configure MQTT)
  • Port is 1883
• Add toggle in Home Assistant

Adding a new IR command

• Hook up the base of NPN transistor to pin 22, with the transistor in series with an IR LED and a 330 ohm resistor.
• Hook up an IR receiver module to pin 22, 3.3V and GND.
• cd esphome
• esphome run remotecontrol.yaml
• Watch the serial output and record the values in remotecontrol.yaml under a new button
• Run esphome run remotecontrol.yaml again to deploy the changes