![]() So, if it was me, I would either use 'SoftwareSerial' OR one of the other hardware Serial ports if those are available on the board to communicate with the TV's. It formally defines signals connecting between a DTE ( data terminal equipment) such as a computer. In telecommunications, RS-232 or Recommended Standard 232 1 is a standard originally introduced in 1960 2 for serial communication transmission of data. On a side note, which arduino board are you intending to use? 'Serial' is usually used as the interface between your PC (serial Monitor) and your arduino. Data circuit-terminating equipment (DCE) and data terminal equipment (DTE) network. put your main code here, to run repeatedly: Referring to this part of the manual to request all the devices to turn ON, this is how I would send the request: void setup() // power control command to request all devices (cmd_power_ctrl = 0xFE) Subject: Re: Crestron Re: Samsung QM-85D (QMD-Series) HDMI 3 Input RS232 Command A couple of months ago I had to program a pixie unit and pixie was able to give me the RS232 commands for HDMI 3. ![]() If I wanted to power on and off a particular monitor, I need to use the matrix in the manual for the correct address. xFE is a global command for all monitors connected. If I am reading this right, the command would be something like this.
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