electronics-ir-keyboard-mouse-emulator

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IR Keyboard+Mouse Emulator

Electronic project for use a IR Remote Control to control a Home Theater PC (HTPC) based on Arduino PRO Micro.
Schematics diagram + PCB diagram (KiCAD 9) and case 3D model (Blender) are also provided.

This project comes in two versions: Allways On and Low Power.
Very important: the current status of the Low Power version is not working, maybe I'll give it another try in the future.

The Allways On version provides an immediate response when a remote control button is pressed.
However, the gadget will constantly draw approximately 35-40mA from the USB port.
The Low Power version automatically powers down the device after 30 seconds of inactivity, and it powers back on upon receiving an IR signal.
This allows the gadget's power consumption to drop 99% of the time to ~1mA (the consumption of the IR sensor, the only component that remains powered on).
However, due to the power-up time and the wait for the PC to recognize the device, there is a slight delay before it can be used.
A high-side topology is used to power down the Arduino.
- Hardware Variant A: External connection with a USB-A cable to J1 (USB-A socket).
  Use a 2-strand cable from J2 (2-pins header) to the USB jack of Arduino for data only (D+/D-).
- Hardware Variant B: External connection with a USB-B mini/micro cable to Arduino.
  Cut the VCC wire of USB-B cable and pass it through J1 (2-pins header).

General commands:

Key Lock/Unlock (to avoid collition with regular TV usage).
Key Esc
Key Close (close current program)
Mouse Change Speed
Mouse Left Click
Mouse Right Click
Mouse MoveUp
Mouse Move Right
Mouse MoveDown
Mouse MoveLeft

Media commands

Media Player (open VLC media player)
Media Play/Pause
Media Stop
Media Forward (moves forward 10 seconds)
Media Rewind (moves backwards 10 seconds)
Media Previous (moves forward 1 minute)
Media Next (moves backwards 1 minute)
Media Volume Mute
Media Volume Up
Media Volume Down

Miscellaneous commands

Comments

IR Keyboard+Mouse Emulator

This project comes in two versions: Allways On and Low Power.
Very important: the current status of the Low Power version is not working, maybe I'll give it another try in the future.

The Allways On version provides an immediate response when a remote control button is pressed.
However, the gadget will constantly draw approximately 35-40mA from the USB port.

The Low Power version automatically powers down the device after 30 seconds of inactivity, and it powers back on upon receiving an IR signal.
This allows the gadget's power consumption to drop 99% of the time to ~1mA (the consumption of the IR sensor, the only component that remains powered on).
However, due to the power-up time and the wait for the PC to recognize the device, there is a slight delay before it can be used.
A high-side topology is used to power down the Arduino.

Hardware Variant A: External connection with a USB-A cable to J1 (USB-A socket).
Use a 2-strand cable from J2 (2-pins header) to the USB jack of Arduino for data only (D+/D-).
Hardware Variant B: External connection with a USB-B mini/micro cable to Arduino.
Cut the VCC wire of USB-B cable and pass it through J1 (2-pins header).

General commands:

Key Lock/Unlock (to avoid collition with regular TV usage).

Key Esc

Key Close (close current program)

Mouse Change Speed

Mouse Left Click

Mouse Right Click

Mouse MoveUp

Mouse Move Right

Mouse MoveDown

Mouse MoveLeft

Media commands

Media Player (open VLC media player)

Media Play/Pause

Media Stop

Media Forward (moves forward 10 seconds)

Media Rewind (moves backwards 10 seconds)

Media Previous (moves forward 1 minute)

Media Next (moves backwards 1 minute)

Media Volume Mute

Media Volume Up

Media Volume Down

Miscellaneous commands

Arduino PRO Micro	Tipical consumption
Normal mode	37-38 mA
ADC + SPI + TWI disabled	35-36 mA
USB detach + Clock @2 MHz	19-20 mA
USB detach + SLEEP_MODE_PWR_DOWN	4-5 mA

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IR Keyboard+Mouse Emulator

Version Allways On

Version Low-Power-B

Version History