ESP Thermal considerations
Re: ESP Thermal considerations
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.
Re: ESP Thermal considerations
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
- 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?
Re: ESP Thermal considerations
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.
Re: ESP Thermal considerations
- 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?
- It is an iperf example from ESP-IDF with wifi SSID modified.
- It happens to be my code
Re: ESP Thermal considerations
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.
It is a bit noisy with small ripples on 3.3V while transmitting. Why is the 10mOhm resistor needed?
Re: ESP Thermal considerations
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?
Re: ESP Thermal considerations
Is the power consumption the same when the FTDI cable is not connected?
I would suspect an incorrectly wired FTDI cable or maybe a 5v serial adapter could cause heating in the esp32.
I would suspect an incorrectly wired FTDI cable or maybe a 5v serial adapter could cause heating in the esp32.
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