iflight beast f7 45a aio v1- wiring guidance please.

[glad karma]

Hello,

I'm getting confused and want a second opinion on this. I have the v1 board with uart1 on the edge.

I have txrx7 taken by gps, txrx4 for ELRS, and txrx2 (via plug) for 03 air unit. I also want to add leds to my freestyle quad.

The led pad is available but in a difficult spot for me to solder, as well as txrx1 on the edge. Can I use tx1 or rx1 as led pad instead?

I'm also out of 5v and ground pads so im thinking I can use the buzzer+ and solder ground to the battery ground?

Am I overloading the 5v regulator ?

Thank you in advance !

[pure flame]

1. You can put multiple things on a power/ground pad.
2. You can chain power from one component to another using #1
3. Remapping is complicated. Each pin has a certain set of capabilities. You'd have to know what capability is needed for LED, and read the datasheet of the FC's main chip to know if the pins you want have that capability. Then you'd also need to figure out if it's possible to do this without causing a timer or DMA conflict.
4. Buzzer+ should be just a 5V pad
5. Avoid battery pads because of circular current path issues and current shunt causing a ground potential differential

As far as overloading the 5V regulator is concerned, what are you powering from it?

I strongly recommend AGAINST running LEDs from FC 5V, give them a standalone regulator.
LED strips and similar things are fairly fragile, sou you could end up shorting out the 5V regulator. This can only be done a random number of times before the 5V regulator pops. Sometimes that number is 0.

[glad karma]

Thanks for the input. I only have a m8 gps and elrs reciever off the 5v reg. I guess my best bet would be using the led pad and a seperate regulator.

[pure flame]

also you could just YOLO test the remapping

as far as regulators go, they are seriously tiny nowadays

You can power LEDs from FC 5V, but it increases the chance of a crash killing the FC.