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    How to control Arduin using STONE HMI to implement a beauty instrument project

    Here we want to do a project on the use of medical devices and instruments, this project, the use of STONE STVA101WT-01 serial interface screen, when the key is pressed after the serial interface screen through the serial command to the Arduino Uno development board serial port command, when our...
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    Thermal print head for a parking management system based on Raspberry Pi pico and HMI

    bancroft submitted a new Project Log: Thermal print head for a parking management system based on Raspberry Pi pico and HMI Read more about this project log here...
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    Raspberry Pi pico can not download other programs

    I have a question, I copied the program into Raspberry Pi pico when I was working on the project of thermal printer parking system, after that I tried to copy other programs but they failed, is it because the pico board can only copy one program?
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    Massage chair based on ESP32 and touchscreen

    bancroft submitted a new Project Log: Massage chair based on ESP32 and touchscreen Read more about this project log here...
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    I bought an ESP8266 and have not been able to access the configuration mo's

    Arduino UNO ESP8266 Web Server serial WiFi expansion board shiled ESP-12E can't enter configuration mode, what should I do?
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    Can PIC microcontrollers be equipped with NFC modules?

    My friend and I are going to develop an Android App and need to communicate with the PIC microcontroller for data and commands. Since the amount of data is small, I would like to use the NFC method of communication. Can I use the corresponding module for the PIC microcontroller? Or, which one do...
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    Questions about printing pictures and image processing on thermal printers

    I intend to use a microcontroller to make a portable thermal printer, cell phones to transmit pictures, the microcontroller will receive the data processing and print by the thermal print head. But the image processing has become a major difficulty - how to convert the general color picture data...
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    Intelligent access control based on ESP32 and HMI

    bancroft submitted a new Project Log: Intelligent access control based on ESP32 and HMI Read more about this project log here...
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    Charging process of charging pile

    I have recently completed the GUI for a project on EV charging piles, the next step I will consider is how to implement this charging process, do I need a row of battery packs? Or does anyone have a better way?
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    How to use the gyroscope

    I just bought a gyroscope module MPU6050 a few days ago, because I want to use it together with my LCD, but I don't have a gyroscope in my LCD, so I have an external gyroscope module, can I achieve the same function? I wish it could achieve 360° rotation to watch a 3D model on the screen.
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    Can PIC microcontrollers be equipped with NFC modules?

    I want to develop an Android App, which needs to communicate with the PIC microcontroller for data and commands. Since the amount of data is small, I would like to use the NFC method of communication. Can I use the corresponding module for the PIC microcontroller? Or, which one do you recommend...
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    The mobile power bulges

    When the mobile power bulges, is it still possible to continue using it? I didn't have the photo in my hand and I was a little scared so I didn't dare to put it close to me.
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    Library files about temperature sensors

    I saw an article using the DHT11 temperature sensor and ESP32, I used the same DHT11 temperature sensor and Arduino Uno, copied its code but didn't find the library file for the temperature sensor called in the code. Is this something that can be found online or do I need to write it myself...
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    The specific algorithm of baud rate when communicating with PIC microcontroller serial port?

    My microcontroller is PIC16F877A, crystal 4M, I want to set the baud rate to 38400, please tell me the exact algorithm. Because the baud rate of my Bluetooth module is 38400, initially the baud rate of my microcontroller program is 9600, do I also have to set the baud rate of the microcontroller...
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    How to adjust the backlight of the LCD?

    I want to brighten my LCD, its specification says 300cd/m², I want to brighten it to 350cd/m²-400cd/m². How to adjust the backlight of the LCD?
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    What is the principle of swipe card to unlock?

    I got interested in swipe cards to unlock after reading an article today, but first I need to figure out two things. How do swipers identify different cards? And what does the so-called RF mean?
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    How to make the brightness of the LED change?

    I have done a preliminary effect of the project, now it is still missing to control the LED brightness change by clicking the number + or number - of the touch screen. When I click on "+" I want the LED brightness to get brighter and brighter as the number increases and conversely decreases. Is...
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    Does 1/4W metal film resistor have a resistance of 100M ohms?

    I looked around and did not see this resistance value. Is there a 100 megohm resistor for a higher power? In the circuit below, under the amplifier, there is a 100M resistor. In the purchase of components, I do not know how to buy them. Usually, I use 1/4W metal film resistors.
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    Problems with PCB layout

    PCB layout, in addition to the components on the schematic, can also add their own components? For example, digital ground, analog ground, single-point ground 0 ohms resistor, and magnetic beads, test points, etc. These are on the schematic diagram, or that the PCB layout engineer additionally...
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    WIFI/Bluetooth Module

    The back of my LCD module is the circuit board, I see the circled area in the picture is the option of wifi or Bluetooth module, my recent project requires me to use wifi, which module will be the most suitable? Pictures are uploaded as attachments.
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