N00b question: After editing and saving a yaml, do I need to reinstall it to the device?

ESPHome
1

After editing and saving a yaml, do I need to reinstall it to the device, or does saving it do the trick?

2

You need to reinstall it. Think of the yaml as a set of instructions for creating the device firmware. The firmware needs to be compiled and then loaded onto the device.

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3

if the device is already on your network, this is easy to do by wireless (OTA) :wink:

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4

You must have the OTA option enabled in the original YAML though:

ota:
  password: "aaaabbbbccccdddeeefff"

Otherwise add it and upload the firmware manually (USB cable) and then you should be able to perform OTA updates after that.