HDMI to AV signal - MS1836 - for analog video transmission connection development boards

The physical demonstration
compares the size with a USB flash drive.
Connect the HDMI output of a Windows 11 computer to this module, and then connect the AV output of this module to the image transmitter. All devices share a common ground, and finally, connect the module to power. The image below shows the screen of the image transmitter receiver.
Copyright information
modified from the original project: https://oshwhub.com/aknice/ms1836
Original project author: https://oshwhub.com/aknice Original
project open source license: GPL 3.0 This
project author: https://oshwhub.com/newcomer00
This project open source license: GPL 3.0
Product function

Original project function: Converts HDMI signals to AV analog signals. Controls the output analog video signal format (PAL/NTSC) via a switch.
Modified in this project:
Only outputs video signals, no longer outputs audio signals;
reduces PCB size;
suitable for development boards connecting to model aircraft airborne image transmitters. Can convert the HDMI video output of devices such as Orange Pi to analog video output, and then connect it to an analog image transmitter.



Input/Output

Power Supply Input: 5V
Signal Input: HDMI
Signal Output: AV

PCB Size
Considering only PCB size, excluding HDMI and switch dimensions:
38.665mm x 24.967mm
Operating Parameters

Typical operating current with 5V power supply and no HDMI input connected: ~215mA
Typical operating current with 5V power supply and HDMI input connected: ~315mA