Rear cam brightness and GPIO dim trigger

[jzxpacky]

Hi guys,

Long time user here and just have a couple of things that I think would be good to have.

1. Ability to adjust camera display settings from within OAP, such as brightness etc. Currently my camera picture is too bright and I need to adjust the settings to something more viewable.

2. Ability to trigger screen dimming from GPIO going high. For example, using a DC to DC buck converter connected to the headlight circuit to automatically dim the display when the headlights are turned on.

Cheers,
Luke.

[stefi]

Hi guys,

Long time user here and just have a couple of things that I think would be good to have.

1. Ability to adjust camera display settings from within OAP, such as brightness etc. Currently my camera picture is too bright and I need to adjust the settings to something more viewable.

2. Ability to trigger screen dimming from GPIO going high. For example, using a DC to DC buck converter connected to the headlight circuit to automatically dim the display when the headlights are turned on.

Cheers,
Luke.

for dimming i use a photo resistor and works great
https://github.com/dandydanny/PiAutoDim

[skrimo]

Using the same "PiAutoDim" setup and it works flawlesly.

[jzxpacky]

I have a photoresistor but want the option to run it from a gpio trigger. I can write a script to do it but thought I would mention it on here I also as an option to include in OAP.

[jhornbr225]

Hi guys,

Long time user here and just have a couple of things that I think would be good to have.

1. Ability to adjust camera display settings from within OAP, such as brightness etc. Currently my camera picture is too bright and I need to adjust the settings to something more viewable.

2. Ability to trigger screen dimming from GPIO going high. For example, using a DC to DC buck converter connected to the headlight circuit to automatically dim the display when the headlights are turned on.

Cheers,
Luke.

For #2, instead of the DC-DC buck converter from the headlights to the Pi, maybe try an opto-isolator. Set the GPIO pin as active low, put the output side of the opto between GPIO pin and GND. Primary side, use datasheet of Opto-isolator to see recommended current, and calculate the required resistor to get that current based on an input of 11-15VDC. That will probably be cheaper, and require less space than a DC-DC or a relay.