This is a Taishanpai 4-inch 86-inch screen adapter board. The screen is a Daxian D395C930UV0, an RGB screen, bridged via ICN6211.
Both MIPI and touch are already driven.
It is recommended to discuss shipping costs with the seller when purchasing the screen. Also, please remember to include the 0x38 touch firmware.
Download link: https://gitee.com/fengmoxi/tspi-d395c930uv0
For those who don't know how to modify the device tree (or are too lazy to do so), you can find pre-compiled kernels and firmware in the releases section: https://gitee.com/fengmoxi/tspi-d395c930uv0/releases/
Installation screenshots:
56555bc70aea2128650dc384ac2eb323.mp4
PDF_Taishanpai 4-inch 86-screen adapter board.zip
Altium_Taishanpai 4-inch 86-screen adapter board.zip
PADS_Taishanpai 4-inch 86-screen adapter board.zip
BOM_Taishanpai 4-inch 86-pixel screen adapter board.xlsx
96161
USB interface data switch
The power or data of the USB port can be disconnected independently.
Features: The USB data pin can be disconnected independently without disconnecting the power supply; it uses relay control.
The principle is very simple, involving only a few switches, relays, a USB port, and indicator lights.
Design rationale: The Arduino main control chip has only one hardware serial port, used for both programming and serial communication. If the program needs to connect to other devices (such as WiFi modules, sensors, etc.) via serial port, the USB cable needs to be unplugged after program upload to prevent the serial port from connecting to the computer, which could prevent normal communication with peripheral devices. However, unplugging the USB cable means disconnecting the 5V power supply, requiring an additional power supply. This project solves this problem by using a switch to disconnect the USB data pin without disconnecting the power supply, or to disconnect the power supply along with the USB cable without unplugging it.
Interfaces: USB Type-B for connecting to the computer, USB Type-A for connecting devices; both support only USB 2.0. A separate 2.54mm header provides a 5V power supply for easy debugging.
Components: 2 toggle switches, 3 relays, 2 LEDs (3mm), 2 color-coded resistors (1/4W, 1kΩ), 1 USB-A female connector bent at 90°, 1 USB-B female connector, 2 2.54mm pin headers. All components can be purchased on Taobao.
With JLCPCB providing free prototyping, the total cost is less than 10 RMB.
PDF_USB Interface Data Switch.zip
Altium_USB interface data switch.zip
PADS_USB Interface Data Switch.zip
96162
240131_Adjustable Power Supply Based on XL6019 and XL4015 V1.0_Open Source
+1.25V~+24V adjustable step-up/step-down power supply, based on XL6019 and XL4015
This version is an experimental board with a total of 4 power outputs. The recommended power input is +12V.
(PS: Please ignore the background music in the video.)
8e754d14bcfe7fca7e91a4d9fdfd9235.mp4
PDF_240131_Adjustable Power Supply Based on XL6019 and XL4015 V1.0_Open Source.zip
Altium_240131_Adjustable Power Supply Based on XL6019 and XL4015 V1.0_Open Source.zip
PADS_240131_Adjustable Power Supply Based on XL6019 and XL4015 V1.0_Open Source.zip
BOM_240131_Adjustable Power Supply Based on XL6019 and XL4015 V1.0_Open Source.xlsx
96163
VAST Sound Switch
COB LED Strip Sound-Controlled Dimming Controller Based on SU-03T
A 12V power supply scheme is selected, and the COB LED strip is also 12V. A maximum output of 3A is recommended, which translates to a 528-LED LED strip no longer than 3 meters in length (actual testing shows that a 1-meter strip with 528 LEDs directly draws approximately 1.13A, which decreases to 1.08A after passing through the MOSFET and including the controller).
Regarding the power supply interface, two options are provided: MX235 and a DC socket. The project uses a 6-pin external and 2-pin internal DC socket, which can be replaced according to your power plug model. The middle pin is the positive power terminal.
February 1st.mp4
Voice-activated dimmer - Button^Voice-activated dimmer - 1.STL
Voice-activated dimmer - Base case^Voice-activated dimmer - 1.STL
Voice-activated dimmer - Cover^Voice-activated dimmer - 1.STL
PDF_VAST Sound Switch.zip
Altium_VAST Sound Switch.zip
PADS_VAST Sound Switch.zip
BOM_VAST Sound Switch.xlsx
96164
electronic
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