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Others/Hardware/Arduino-ESP32 ESP32: Analog values measure at the input 18.06.2021 123 The ESP32 has two analog digital converters and can thus read values in parallel on most GPIO pins A voltage of 0 to 3 3 volts can be applied to each input PIN or measured The values are read as integers from 0 to 4095 with the analogRead(PIN) command The analog in Others/Hardware/Arduino-ESP32/Error OK: A fatal error occurred: Timed out waiting for packet content 02.06.2020 2098 When loading a program zaround ESP32 DevBoard, the flash is aborted with the error message: Configuring flash size Warning: Could not auto-detect Flash size (FlashID=0xffffff, Others/Hardware/Arduino-ESP32/Arduino-Code Switch with ESP32 MosFET and high voltages with optocoupler 20.05.2020 1018 Only GPIO2 or GPIO4 is connected to the IN1 and Ground on GND of the optocoupler At the bottom of the Oszilloscop you can see the voltage-decoupled signal at the high-voltage voltage and MosFET circuits The trick is to completely dec Others/Hardware/Arduino-ESP32/Error Solution: ESP32 does not start because of Pin GPIO0 20.05.2020 1612 Solution: ESP32 Pin GPIO0 Problem: ESP32 does not start in the program after installing download of a program Solution: The PIN GPIO0 G0 should not be used as it is used for booting and installing software, firmware, sketch programs for the BOOT sign Others/Hardware/Arduino-ESP32/Error A fatal error occurred: Failed to connect to ESP32 20.05.2020 926 Fehler ESP32: A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header Cause: If the PIN EN is connected to GRD or GPIO0 G0 is connected to 3 3 Behavior: When uploading a new sketch program, the upload process remains Others/Hardware/Arduino-ESP32/Error Problem Issue: ESP32 no longer starts 20.05.2020 830 After pressing the RST button, the program gets stuck before the start or it looped all the time in the attempt to start The whole misconduct usually happens when you connect a working ESP32 DevBoard to the GPIO0 Before, everything works without any Others/Hardware/Arduino-ESP32/Arduino-Code Solved: conversion from void to non-scalar type String requested bei String.replace und toLowerCase 06.05.2020 1882 Solved: conversion from void to non-scalar type String requested bei String replace und toLowerCase Error message: error: conversion from 'void' to non-scalar type 'String' requested Others/Hardware/Arduino-ESP32/Arduino-Code Arduino Code: Declare an Enum Type, a Variable and Compare it 06.05.2020 2737 Arduino Code: Declare an Enum Type, a Variable and Compare it Arduino C Code-Sample 1 Declare an enum typdef 2 compare== the enum Arduino C Code-Sample 1 Declare an enum typdef 2 compare== the enum Others/Hardware/Arduino-ESP32/Arduino-Code Connect ESP32 to Bluetooth, work and write and read commands 06.05.2020 1118 ESP32 Code: Connect ESP32 to Bluetooth, work and write and read commands This code example shows whatyou can connect an ESP32 microprocessor to a smartphone and then send commands to control the application and read the jam ESP32 WROOM32 nodeMCU, Arduino, Others/Hardware/Arduino-ESP32 ESP32 Code: Create an output pulse with adjustable pulse width via button and display on LCD and digits 25.04.2020 852 Arduino ESP32 Code: Create an output pulse with adjustable pulse width via button and display on LCD and digits The following Arduino ESP32 nodeMCU code does the following (with Arduino ESP32 microcontroller code) Two buttons generate a pulse with an adjustable pul