Re: ESP Thermal considerations
Posted: Wed Feb 20, 2019 3:17 pm
I would like to add that it happened in a few other EV boards. And the current usually drops to around 100-150mA. In one of them manual reset helped.
This is all quite unusual. I'm not denying this is happening to you, it's just that noone else has reported this kind of systemic problem. I have three more questions
Hi, what about your power supply? Does it look stable? Can you look at it with an Oscilloscope? (With a 10 mohm series resistor between your power source and the ESP32 it would be even better!). Perhaps the consumption pattern could tell us something about what's happening to you.
- Some were ESP32 things and some were other boards.ESP_Angus wrote: ↑Wed Feb 20, 2019 10:34 pmThis is all quite unusual. I'm not denying this is happening to you, it's just that noone else has reported this kind of systemic problem. I have three more questions
- Were they all ESP32 Things, or some other ESP32 boards as well?
- Can you tell anything else about the code you're running on these boards?
- If you run an unmodified (except for Wi-Fi SSID/password) example from ESP-IDF or Arduino for ESP32, can you reproduce this?
Hi,guillep2k wrote: ↑Wed Feb 20, 2019 10:38 pmHi, what about your power supply? Does it look stable? Can you look at it with an Oscilloscope? (With a 10 mohm series resistor between your power source and the ESP32 it would be even better!). Perhaps the consumption pattern could tell us something about what's happening to you.
The goal was to pinpoint the source of the noise. Whether it's a noisy power supply or the drops are simply because of [acceptable] lack of regulation. I was looking for something dramatic that might cause a very wrong behaviour in the module. I guess that's ruled out.Hi,
It is a bit noisy with small ripples on 3.3V while transmitting. Why is the 10mOhm resistor needed?