Telnet Command State returns no result, but manual entry shows otherwise

[arretx (Jon Griffith)]

I’m using Telnet to fire up our two projectors in our sanctuary automatically. The ON switch works. What doesn’t work is detecting the state of the device.

If I type in the state command CR0 into the telnet session, I get the appropriate response, which is one of 5 potential responses, all being a numeric value. When the projectors first fire up, they respond with 4 (searching for input) and when there’s input, they switch to 7.

So, I figured, according to the component’s configuration instructions, adding the following:

command_state: "CR0"
value_template: '{{ value == "4" or value == "7" }}'

would yield a result of true, but all I get in the log is Empty response for command: CR0

So, there’s really no way for HA to know if the projector is on or not. Likewise, they don’t seem to work very well with the known_devices list. One of them is there, and one is not, but their home / away states never change regardless of their actual state.

Any ideas?

[ansenagy]

Hi. I know a long time passed already, but I am having the same issue, an empty telnet response. Did you solve the problem? Any advice before I move to a different integration mechanism?
Thank you in advance

[arretx (Jon Griffith)]

Never did solve this problem.

[sdavides (p)]

Telnet Commands / Button?

Yes example “date” 192.168.1.4 command_line: - sensor: name: aqara_test command: "apk -q add inetutils-telnet && ( sleep 3; printf 'root\n'; sleep 1; printf 'clear\n'; sleep 1; printf 'date\n'; sleep 1; ) | telnet 192.168.1.4 | sed '1,8d'" value_template: "{{ value | replace ('#','') | replace ('~','') }}" [immagine] [immagine]