Search found 10 matches

by svenbieg
Fri Feb 26, 2021 9:24 am
Forum: General Discussion
Topic: ESP32 life-time
Replies: 12
Views: 477

Re: ESP32 life-time

I don't get spikes on the analog-pins, it is a simple voltage divider with 3.3V supply voltage. And the relais are driven with 5V. If the supply voltage would drop the chip would restart immediatly. I think the soldering maybe the problem, i put a DOWD-SoC on an adapter with a soldering Iron. Thank ...
by svenbieg
Tue Feb 23, 2021 7:22 pm
Forum: General Discussion
Topic: ESP32 life-time
Replies: 12
Views: 477

Re: Long live

Regarding "erased flash too often", are we talking >100,000 erase cycles here? Yes, i did save the temperature-curves every minute erasing flash-sectors. The chip did still work, only the curves were gone after about half a year, that means about 100.000 write-cycles like in the specs. This was my ...
by svenbieg
Tue Feb 23, 2021 7:15 pm
Forum: General Discussion
Topic: ESP32 life-time
Replies: 12
Views: 477

Re: ESP32 life-time

No, the first chip doesn't work anymore. I reduced frequency on the second chip. Your chip was designed to work many years, but is anyone out there who has chips working that long?
by svenbieg
Sat Feb 20, 2021 12:46 pm
Forum: General Discussion
Topic: ESP32 life-time
Replies: 12
Views: 477

Re: Long live

How exactly does it fail when it fails? Do you have a schematic? Especially with a relais or external analog inputs, high-voltage spikes could play a role here. The first chip hung up and restarted after few seconds, so i reduced the frequency. The second chip was my fault, i erased flash too often...
by svenbieg
Sat Feb 20, 2021 12:37 pm
Forum: General Discussion
Topic: ESP32 life-time
Replies: 12
Views: 477

Re: Long live

I'm using a voltage divider with the 3.3V supply-voltage, the relais are driven with 5V by an ULN2003. I just wanted to know if this a known problem of the ESP32. I'm going to try the DevkitC, maybe the chip got too hot when i was soldering it on the adapter.
by svenbieg
Sat Feb 20, 2021 9:08 am
Forum: General Discussion
Topic: ESP32 life-time
Replies: 12
Views: 477

Re: Long live

What am i doing wrong? I have 5 analog Inputs and a driver for the relais, some RGB-Leds and a display. The voltage is regulated by an LD33V. The controller is inside of the house, there are always about 20°C. Everything works fine for months.
by svenbieg
Fri Feb 19, 2021 10:32 pm
Forum: General Discussion
Topic: ESP32 life-time
Replies: 12
Views: 477

ESP32 life-time

My ESP32-chips only last half a year. I did reduce frequency form 240 MHz to 160 MHz already. I'm using it for a thermal solar control and this is my fourth chip already.
by svenbieg
Fri Jan 01, 2021 8:59 pm
Forum: General Discussion
Topic: New heap component
Replies: 0
Views: 1154

New heap component

Hello Mr. and Mrs., i have written a new heap component based on my sorting algorithm http://www.github.com/svenbieg/clusters . Free space is mapped by size and by offset, so the smallest block top most of the heap is returned. Allocating and freeing 30.000 times takes about 496ms, compared to 746ms...
by svenbieg
Sun Sep 20, 2020 4:51 pm
Forum: General Discussion
Topic: What would you like to see in The Next Chip?
Replies: 398
Views: 221339

Re: What would you like to see in The Next Chip?

I'd like to see a new memory manager based on my Clusters-algorithm.

http://www.github.com/svenbieg/Clusters

Best regards,

Sven Bieg
by svenbieg
Sat Apr 11, 2020 7:02 pm
Forum: General Discussion
Topic: ledc example does not work at all
Replies: 23
Views: 15992

Re: ledc example does not work at all

The sample does work on pin 4 but not my application, maybe because i have WiFi enabled.
Following pins do work: 5, 17, 18, 19, 21, 22, 25, 26.

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