Code /* Button Turns on and off a light emitting diode(LED) connected to digital pin 13, when pressing a pushbutton attached to pin 2. The circuit: - LED attached from pin 13 to ground - pushbutton attached to pin 2 from +5V - 10K resistor attached to pin 2 from ground - Note: on most Arduinos ther...

Project Overview Here we do the production line counting application, after boot, stone TFT The LCD serial port screen will have a start interface. After a short stay, it will jump to the specified page 1 and display the time setting. At this time, it is necessary to set the current time. Another o...

thonny development microPython (ESP32-cam development board) how to update the firmware After I flashed in microPython's firmware, the athonny reported the following error. Device is busy or does not respond. Your options: - wait until it completes current work; - use Ctrl+C to interrupt current wor...

Does anyone know if the ESP32 built-in Bluetooth is compatible with iPhone/iPad?

Project Overview Here we do is a home massage chair application, when the LCD serial screen is powered on, a start interface will appear. After a short stay, it will jump to a specific interface. This interface is used to set our current time. When setting, a keyboard will pop up. After setting, cl...

Okay, I got it, thanks a lot!

Thanks for the reply, I'll adopt your advice!

How can I store permanent data with spiffs on esp32? Example: Variablefloat_one 126.658 Variablefloat_two 2.85 Variablefloat_.... These variables use my program, I can change these variables on STONE display . When I push the save button, then write the variables into storage. And when the esp32 res...

Is the esp32d wroom replaceable by the pico d4 chip? does the tiny pico contain everything that the big 32module does? https://scontent-sjc3-1.xx.fbcdn.net/v/t1.6435-9/p600x600/242135838_195673125964934_8376508076473737480_n.jpg?_nc_cat=100&ccb=1-5&_nc_sid=b9115d&_nc_ohc=W7UBT528tCgAX8ZjPkn&tn=Yt0dV...

1. Can ESP32 be directly connected to the MQ135 air quality detection sensor?
2. Can you give me the wiring diagram?
3. Does anyone have the Arduino program to connect ESP32 to MQ135?