support for external lighting

[bartgrefte]

"Control of on-board lamps"

I haven't found any mention of this, but is there support for external (not on ESP32-board soldered) lighting? Let's say one or more WS2812B LED's for example.

[founfabug]

GPIO4 controls the onboard "flash" LED. You can use this pin to drive an appropriate external LED circuit, and it will mirror the operation of the onboard LED.

[easytarget]

As @founfabug says; the onboard illumination LED is on GPIO4, which is also brought out on one of the Module pins.

• This is the low power side of the pin; you will still need an external arduino->led mosfet drive circuit to drive LED strips, panels etc.

The onboard LED (which has it's own onboard mosfet) will still light; you can either 'desolder'(*) it from the board or:

• override the value from camera_pins.h by adding the line:
  #define LAMP_PIN <NEW_PIN_NUMBER> // LED FloodLamp.
  immediately after including the pins config, currently line#53 in esp32-cam-webserver.ino
• This will let you use a different pin, since we do not use the SD card all of the pins for that are available. Make sure you do not conflict with an in-use pin for the camera, psram or programmer

(*) If you don't have a soldering iron, you can (carefully) break it off the board. Make sure the contacts underneath are not shorting to anything afterwards.

[easytarget]

I'm moving this to discussions since it is a general topic that may interest others.