Custom overlay for Dahua cameras

[jakeycrx]

I just spent a good few hours getting this working, so I thought I would post up as it's something I've wanted to do for a while.

Using the API you can overlay any value from Home Assistant onto your Dahua camera. I'm overlaying temp and RH. It's very simple once I worked it out, but there is a lot of trial and error involved with the Dahua API.

I'm using a shell command. You can't have spaces in the string you're trying to overlay otherwise it won't work. The vertical bar is a line break. I made sensor templates to add the °C and % symbols, then I have an automation to run the shell command when the temp or RH changes. It's working on my 2 Dahua cameras.

curl -s -g --digest -u user:pass "http://192.168.1.7/cgi-bin/configManager.cgi?action=setConfig&ChannelTitle[0].Name={{ states('sensor.camera_overlay_temp') }}|{{ states('sensor.camera_overlay_rh') }}"

[hawkeye217]

Moving this to the Show and Tell category. Nice work!

[jakeycrx]

My next task is to see if I can overlay the detected object and score. It should be possible, but from past experience the camera gets laggy if you spam the API too much.