Hi,
as title says, I'm looking for reliable power source for Esp32Cam.
I was using this one for powering MKR1000, but no luck with Esp32Cam.
I have tried to add 104pF ceramic capacitor on the power rails, but didn't help.
Is there some obvious reason why this power source shouldn't work that I don't see? Is there something more I can try to "smooth" the output of this one to make ESP32 like it?
Thanks
Shucks you got the black one, you need the purple one for it to work. You could connect it to a lemon maybe that will do more then the capacitor.
If it helps I cannot see a thing that you have nor do I have a clue as to what you have
Can you elaborate on "no luck". You've linked to a 5V/2A medical grade supply that really doesn't need output filtering. I run an ESP32-CAM with the USB adapter board and power the lot with a 1A USB supply with no issues.
5V 10W, that's correct. it just wont start. the ESP32. I can measure 5V on the output. I have tried two ESPs: one with built in serial to usb and one without. One of them started for one time, I issued command via mqtt to take the photo at that moment it stopped working and didn't blinked since. Maybe I have a bad piece or something, ESPs are working on usb fine..
Show a schematic of your project and a clear photograph of how you have everything wired up.
For a 3.3v device a 3.3v PSU seems more appropriate unless there are also 5v components to be powered. 2A seems like overkill though. But as stated before it should just work.
setup() and I can see it [blink] and it repeats over and over. it's the WiFiManager that causes this loop. here's the code:
#include <WiFiManager.h> // https://github.com/tzapu/WiFiManager
bool startIncuWifi() {
WiFiManager wm;
bool res = wm.autoConnect("AutoConnectAP", "password"); // password protected ap
if (!res) {
Serial.println("Failed to connect wifi");
} else {
Serial.println("wifi connected...yeey :)");
}
return res;
}
void setup() {
Serial.begin(9600);
pinMode(4, OUTPUT);
digitalWrite(4, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(4, LOW); // turn the LED off by making the voltage LOW
delay(1000);
digitalWrite(4, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(4, LOW); // turn the LED off by making the voltage LOW
delay(1000);
startIncuWifi();
}
void loop() {
// put your main code here, to run repeatedly:
}
What's the value of making/having bool startIncuWifi() ?
Why not keep that as presented in the Example?
well, my original sketch is way more complex, I initialize mqtt, air sensor, wifi, camera and temp sensor and pass around some delegates in order to keep code separated in files... it's just what was left after I was cutting the pices off in order to isolate the issue
alright, solved now and it was power issue at the end.
what worked is putting the little ceramic capacitor closer to the ESP32 pins. before, I had it on the end of power rails, also it needs to have that 2A power source, on the 1A which I photographed it still wont work, but with 10W 5V it is enough.
WiFi communication involves peak currents in the range of a few hundred mA. Apparently your power supply destabilized under these conditions, forcing the ESP in a brownout condition or a reset loop. Generally a 5W power supply is more than adequate with decent circuit design, unless there are other power-hungry components part of the system.
well to improve my circuit design was basically initial intention of this post, you see
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