Sending RS232/UART Commands to HDMI Matrix over WLAN with ESP8266

Hey everyone!

I have a EZ-MX42PRO-HAS HDMI Matrix from ezcoo (LINK). With the micro-USB connector on the front you can control the matrix via serial and query the status (You can read the documentation when you download the “Update and setting kit”.). Now i want to integrate it to my HA over WLAN. I have already found out that HA offers a serial integration, but I would prefer a solution via WLAN since my HA host is located further away.

An integration via IR I also do not want because I can not query the status. (And I have lost the remote control to be able to record the signals :confused: [And I do not want to pay 25€ shipping for a 8€ remote control :wink: ])

I already searched Google and blog posts and came across this git-project from jeelabs (LINK) which might be a good fit. But I’m having trouble figuring out how to connect the micro-USB cable to my ESP8266. I already found out that I need a development board that acts as a USB host, but I can’t find one that fits. All boards I find I think are more for programming the ESP like this one:

Am I on the right track or do I have to rethink the whole concept and start over?
I hope someone can help me.

Thanks in advance for your help!
Greetings from Germany!

Get a microusb cable, doesn’t matter what is on the other end.

Cut the other end off.

Solder the serial cable onto the esp and use esphome. Search here for ‘uart’

1 Like

Hey thanks for your Answer!

I searched a bit but cand find a picture or something how i have to connect the wires to the ESP8266?

Won’t work as it’s serial over USB so not supported so far in ESPHome !! Maybe with the latest ESP that integrates an USB port but even not sure it would work as you need a driver to get ESP to be able to handle serial on USB :confused:

It is just serial. One wire RX, one wire TX.

I don’t think so as usb port is used for fw upgrade from a computer so it’s a regular USB port not a serial one !

The clue is in the name. USB universal SERIAL bus.

yeah but no !! you make confusions here, good luck to get it working with the ESP :wink:

Hey @vincen thanks for your answer!

Do you have any other solution? It dont have to be an ESP8266, would be nice because i habe those laying around.

@da_hepfe unhappy not as control through an USB port is quite complicated to handle in an automation system. I’m always very careful to select products I buy to have a proper control on it (serial mode through an RS-232/422/485 port, or TCP/IP :wink:
As indicated before it might be possible with the new ESP that have an USB port native but you’ll need to code it by yourself as it’s far to be supported in ESPHome right now :frowning: