A blob of hot glue covered with clear heat shrink to protect the LEDs, leaving a 2cm dongle.
This blaster sends at 38kHz. It works with 95% of TVs, ACs, soundbars, and set-top boxes. It will not work with RF remotes (e.g., some new Roku or Apple TV remotes). usb-c ir blaster diy
: Remove an IR LED from an old remote control or use a new one. A blob of hot glue covered with clear
Search for "IRremote by shirriff, z3t0, ArminJo". Version 4.x is stable. It will not work with RF remotes (e
Here is the shopping list for a reliable, low-power USB-C IR blaster based on the or CH552 microcontroller. We will use the more modern and easier-to-program Raspberry Pi Pico (RP2040) for this guide because it supports native USB and 3.3V logic.
| Issue | Fix | | --- | --- | | No light on camera | Reverse LED legs. IR LEDs are polarity sensitive. | | Very short range | Add the transistor. Or increase resistor to 150Ω (less current, but safer). | | Phone doesn't recognize | Your adapter might need 5V. Try a USB-C hub with power injection. | | App crashes | Use a different serial app. Some don't handle raw IR timing well. |