ESP32-CAM is flickering, why ?

[tolga121]

Hello falks,

as you can see in the screenshot, my ESP32-Cam is flickering. Do you guys know why ? The LED is also flickering, but not intense flickering.

I've some suspects:

1. maybe it could be the AMS1117-3.3 voltage regulator ?
2. or it could be the RX/TX connection ?
3. or coudld it be because of the Connections ? I am just using normal pin-headers.

[jremington]

Most likely, either the power supply is inadequate, or the regulator is overheating, and the voltage is dropping.

[tolga121]

@jremington

or the regulator is overheating

the regulator is indeed, overheating. is it better to put a buckconverter after DC-Jack and the first cap ? If yes: what Voltage should I adjust on the BuckConv ? (Remember: there is an 6VDC input)

[jremington]

Use a 3.3V buck converter. There is no need for the linear regulator.

[tolga121]

Okay, and what about noice etc. ? And also no need for capacitors etc ?

I am asking because I am a beginner. A prof told me to use an AMS1117

[jremington]

It is a good idea to add a 10 to 100 uF capacitor between the regulator and the ESP32, to reduce noise from the switching regulator.

Ask the professor to explain why the AMS1117 was overheating.

[LarryD]

You might want to look into using a Buck/Boost converter.

Lots on Ebay.

Or

[tolga121]

@jremington

Or Buck-Boost Regulator Module

Thanks mate, I think I will take this

@jremington

Ask the professor to explain why the AMS1117 was overheating.

Because the power dissipitation The problem are the 200mA which flows throw, and the 6v to 3.3V Stepdown.

Okay, I will use the BuckConv... but should I use the Capacitors (which you see on the shematic) for the BuckConv too ?

[jremington]

@tolga121

should I use the Capacitors (which you see on the shematic) for the BuckConv too ?

Please reread the first line of reply #7.

[tolga121]

Okay, thanks man

[GolamMostafa]

Please, post the sketch along with hardware setup so that I can reproduce the same fault in my ESP32-CAM Module.