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Others/Hardware/Arduino-ESP32/Error OK: A fatal error occurred: Timed out waiting for packet content 02.06.2020 222 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 230 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 256 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 244 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 246 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 341 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 288 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 314 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 298 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 Others/Hardware/Arduino-ESP32/Arduino-Code Solved: LCD shows strange signs on ESP32 18.04.2020 209 Applies to ESP32 nodeMCU Arduino and LiquidCrystal_I2C LCD When connecting LCD devices to an ESP32 microcontroller, it happens again and again that the LCD display displays weird cryptic characters after some time I had been looking for a solutio Others/Hardware/Arduino-ESP32/Arduino-Code Arduino : switch case 17.04.2020 231 Code Example: Arduino switch case Switch (value): Case differentiation by this value Case value: if the value is true, then work out the following lines Break:the case-block ends with break Others/Hardware/Arduino-ESP32 8 Charater LED anzeigen an einer ESP32 mit TM1638 Led Buttons 16.04.2020 229 8 Charater LED display on an ESP32 with TM1638 Led&Buttons Description: The following code brings the first and last LED of a TM1638 LED&KEY display to the leuchen The Arduino ESP32 code serves as a code example for operating the LED board on an ESP32 Others/Hardware/Arduino-ESP32 ESP32 NodeMCU mit TM1838 Buttons 16.04.2020 273 ESP32 NodeMCU mit 8 LED & KEY Description: With this application you can operate a button input board on an ESP32 nodeMCU With the code example, the input board is operated in such a way that when pressing a button the appropriate LED lights up Others/Hardware/Arduino-ESP32 Arduino Code: Create variable pulses with ESP32 DevKit 15.04.2020 227 Arduino ESP32 Code: Create variable pulses with 20 pulses with multiple lengths of 150ns nanoseconds (minimum GPIO time at Arduino ESP32) Application: As you can see here, an ESP32 is used to generate very fast pulses The control serves as a contro Others/Hardware/Arduino-ESP32 Arduino: view float with 2 commas 15.04.2020 219 Problem: in an Arduino calculation of a float variable (flow number, comma value), the result is always calculated without decimal places The calculation varFloat=1000 myFloat1 always yields 0 00 Solution: In the case of calculation o Others/Hardware/Arduino-ESP32 Connect an LCD display on ESP32 15.04.2020 379 ESP32 LCD display This guide shows how to connect and display a two-line LCD display on an ESP32 DevKit nodeMCU Connect SCL and SDA signal lines Connect the GPIO21 and GPIO22 lines to the LCD display GPIO22 ->SCL Cl