Extending the reach of your remote controls for devices like Blu-ray players, DVRs, and set-top boxes can be a challenge, especially when those devices are hidden away in a media cabinet or another room. This article explores how to use an HDMI to mini HDMI to OBD2 setup, focusing on leveraging the existing HDMI infrastructure for transmitting infrared (IR) signals. While a direct HDMI to OBD2 connection isn’t standard for IR extension, we’ll discuss how adapting HDMI solutions for this purpose can be a viable option.
Understanding the Need for IR Extension
Traditional IR remotes rely on a direct line of sight to communicate with the target device. When equipment is tucked away, this line of sight is broken, rendering the remote useless. Solutions are needed to bridge this gap and extend the IR signal. One such solution involves utilizing the HDMI cable already connecting your devices.
Leveraging HDMI for IR Signal Transmission
While HDMI is primarily designed for audio and video transmission, certain solutions utilize its unused capabilities for other purposes, including carrying IR signals. Devices like the Sewell InjectIR utilize the HDMI CEC (Consumer Electronics Control) channel to transmit IR commands. This eliminates the need for running additional cables.
Sewell InjectIR Connection Diagram
Adapting HDMI Solutions for HDMI to Mini HDMI to OBD2
A typical scenario might involve a device with a mini HDMI output that needs its IR signal extended to a location near an OBD2 port, potentially for in-car entertainment systems. Here’s how you might approach this:
- HDMI to Mini HDMI Conversion: Use an HDMI to mini HDMI adapter to connect the InjectIR transmitter to the device’s mini HDMI output.
- IR Receiver Placement: Position the IR receiver near the OBD2 port, ensuring it has a clear line of sight to the user’s remote control. This might involve using an extension cable for the IR receiver.
- IR Emitter Connection: The InjectIR emitter would connect to the main HDMI output (after the mini HDMI to HDMI conversion), sending the IR signal along the HDMI cable. An additional HDMI to RCA converter might be necessary depending on the final display device.
Choosing the Right IR Extender
Selecting a suitable IR extender is crucial. Features to consider include:
- Dual-Band Support: Ensures compatibility with a wider range of devices.
- HDCP Compliance: Important for maintaining high-definition video quality.
- Ease of Installation: Simplifies the setup process.
Troubleshooting Potential Issues
Common issues and their solutions:
- Compatibility: Verify compatibility with your specific devices, especially cable boxes. Some models are known to have compatibility problems with IR extenders.
- Signal Strength: Ensure the IR emitter is positioned correctly and has a clear path to the target device’s IR receiver.
- Power Supply: Check that all components are properly powered.
Conclusion
While a direct HDMI to OBD2 connection for IR extension isn’t a standard configuration, adapting existing HDMI-based solutions like the Sewell InjectIR with appropriate converters can provide a viable workaround. Careful planning, component selection, and troubleshooting can help you successfully extend your IR signals using your existing HDMI infrastructure, even in non-traditional setups. Remember to always verify device compatibility and ensure proper signal strength for optimal performance.
