IR Blaster for Flipper Zero / Phone / Remote

This device makes your pre-existing IR devices stronger such as remotes or the Flipper Zero, and allows you to use your phone to send a near endless amount of IR codes for a wide away of devices. _{if you make this and it breaks (or breaks your phone), that's on you, I hold no liability for that}

FOR FLIPPER ZERO / REMOTE

3 leds: ( https://www.adafruit.com/product/388 )

1 NPN transistors: ( https://a.co/d/eqLLByi ) 2n2222 used, but basically any npn transistor should work

1 9v: I used energizer max 9v from Walmart but any should do

IR signal: this can be from the a7 flipper pin or by taking a remote apart and removing the IR LED and wiring the + and - to wires for later use

FOR PHONE (CAN STILL BE USED FOR FLIPPER AND REMOTES)

1 audio cable: ( https://a.co/d/7Cf8vVP ) if you're up for it you can rip this off a pair of cheap earbuds, its hard to do it tho.

4 switching diodes: ( https://a.co/d/3dYdHuE ) I used the 1N4148

a phone with an audio jack

this or a similar app: https://play.google.com/store/apps/details?id=net.binarymode.android.irpluswave&hl=en_US

side note: you will need everything in the other section. and idk of any apps for Apple, so if you have an Apple device you might be unable to do this

For this step, you will need the materials listed above in the Flipper Zero / remote section.

I recommend doing this on a breadboard first so you understand how it works and what needs to be wired where.

We are going to start with making the LEDs work with a transistor as a switch. Start by putting the 3 LEDs in parallel with each other and connecting a 9V battery to the positive leads. Then, plug the negative side of the LEDs into the collector of the NPN transistor. Next, connect the positive of your remote (a7 on the Flipper Zero) to the base of the transistor. Connect the negative of the remote (GND on the Flipper Zero) and the negative of the 9V battery to the emitter.

Congrats! If everything is done correctly, you can now use your original device not just as the sender of IR but as the controller for a much stronger IR blaster.

i made 2 of these circuits and simply had the bases and emitters of each transistor linked to each other and that's why I have 6 LEDs, you can do the same if you want but you migh.

(Circuit diagram above)

Make sure you have the circuit from Step 1. You can use this with a remote plugged in, although I am not sure about the Flipper Zero.

To start off, with the audio cable, identify the ground wire and either cut it so it is not exposed or tape it down, as we will not be using it. Arrange your 4 diodes in a rectifying formation (diamond shape in the picture). On the power input (top and bottom) for the rectifier, plug in the left and right wires of the audio cable. The app uses stereo audio, so the left and right will have the same output, and it doesn't matter which side is connected. Connect the positive output of the rectifier to the base of the transistor from Step 1. Connect the negative output of the rectifier to the emitter of the transistor.

You should now be able to use your phone with the app to send IR signals to the rectifier, which will then convert the AC audio output to DC, allowing it to control the transistor.

I didn't make the app, so if it breaks for you or you can't install it, there isn't anything I can do. Try installing the APK or a similar application.

during this time I added in the blue and white wires you can see leading out, this lets me plug in things like Arduino and Raspberry Pi into it without taking it apart, it also lets me get the signal from the LED remote for testing. if you want to do this add in the wires at the base and emitter of the transistor and remember that the base is where positive inputs go and the emitter is where negative goes

(Circuit diagram above)