Search found 48 matches

by sergiomarina
Thu Mar 04, 2021 4:03 pm
Forum: Hardware
Topic: 3V3 PIN to GND DC impedance
Replies: 8
Views: 8743

Re: 3V3 PIN to GND DC impedance

Hi, after two weeks I return to this subject since today I run into a disaster. Please, support! Yesterday I just finished an ESP32 application for a meteo station and I started pre-production tests. Just this morning (after about 15 hours) the ESP32 got stacked. Looking at wireshark tracing the ESP...
by sergiomarina
Mon Feb 15, 2021 12:12 pm
Forum: Hardware
Topic: 3V3 PIN to GND DC impedance
Replies: 8
Views: 8743

Re: 3V3 PIN to GND DC impedance

Hi, I agree that the multimeter exact value has a limited value, but I'm asking not regarding to the exact value but if infinite can be acceptable. As a matter of fact: - when the ESP32 does not work (please, see more detailed test result in my previous posts) my two multimeters measure infinite res...
by sergiomarina
Mon Feb 15, 2021 5:57 am
Forum: Hardware
Topic: 3V3 PIN to GND DC impedance
Replies: 8
Views: 8743

Re: 3V3 PIN to GND DC impedance

Hi, thank you for your quick answer. Yes, "DC impedance" and "resistance" are the same. I powered just one of those ESP32 and I found just 2-3mA the current consumption. Of course no output on U0TXD. I've taken the mentioned measures of the remaining ESP32s just scratching the plastic film of the st...
by sergiomarina
Sun Feb 14, 2021 9:18 pm
Forum: Hardware
Topic: 3V3 PIN to GND DC impedance
Replies: 8
Views: 8743

3V3 PIN to GND DC impedance

ESP32 WROOM D0WD and D0WD-V3 I'm used to measure the DC impedance of the ESP32 before using it. The standard measures are 1,8-1,9KOhm and 4-500Ohm (depending on the positive tip of the tester. I just received some ESP32 modules where the former impedance measures infinite (instead of 1,8-1,9KOhm) Ar...
by sergiomarina
Thu Jul 16, 2020 7:50 pm
Forum: ESP IoT Solution
Topic: ADC1 attenuation: ADC_ATTEN_MAX
Replies: 1
Views: 3912

ADC1 attenuation: ADC_ATTEN_MAX

I set atten to "ADC_ATTEN_MAX" since it was offered by VSC IntelliSense. I got the following error: E (318) RTC_MODULE: C:/esp/esp40branch/esp-idf/components/driver/rtc_module.c:1459 (adc1_config_channel_atten):ADC Atten Err I'm using ESP-IDF branch 4.0. Menuconfig default except flash size (2MB -> ...
by sergiomarina
Sat Feb 08, 2020 1:35 pm
Forum: Hardware
Topic: ESP32 can get in bootloader mode after deep sleep
Replies: 3
Views: 4735

Re: ESP32 can get in bootloader mode after deep sleep

Hello, I jump into this post since I think my request is connected: I'm looking for a reference documentation that explains how to use menuconfig script available in the ESP-IDF SDK. I have just installed version 4.1, but I cannot find a document that explains the different options made available by...
by sergiomarina
Fri Feb 07, 2020 10:36 am
Forum: ESP-ADF
Topic: Adding custom voice recognition commands on Esp32-Lyra T .
Replies: 3
Views: 9935

Re: Adding custom voice recognition commands on Esp32-Lyra T .

Hello, i'm interested in creating a business application that uses speech recognition. So i'm wondering if ESP32-Lyra can do it. The drafted application is as follows: 1) user tells wake up word (whatever made available by API) to Lyra 2) Lyra answers "ok" (or whatever user-recorded or pre-recorded)...
by sergiomarina
Wed Feb 05, 2020 7:01 pm
Forum: ESP-IDF
Topic: Could not find Git / could not find Perl
Replies: 9
Views: 15862

Re: Could not find Git / could not find Perl

Hello, I have just create the IDF environment with the std setup https://dl.espressif.com/dl/esp-idf-tools-setup-2.2.exe Using the script "idf.py menuconfig" or "idf.py build" I get (among several other logs) the following: "Could NOT find Perl (missing: PERL_EXECUTABLE)" Unfortunately I have not re...